Wetenschappelijke publicaties over kunstmatige bladeren 2016

H. C. Chen, R. M. Williams, J. N. H. Reek,A. M. Brouwer (2016) Robust Benzo[g, h, i ]perylenetriimide Dye-Sensitized Electrodes in Air-Saturated Aqueous Buffer Solution, Chemistry - A European Journal 22(16): 5489-5493 view paper >

H. C. Chen, J. N. H. Reek, R. M. Williams,A. M. Brouwer (2016) Halogenated earth abundant metalloporphyrins as photostable sensitizers for visible-light-driven water oxidation in a neutral phosphate buffer solution, Physical Chemistry Chemical Physics 18(22): 15191-15198 view paper >

O. Diaz-Morales, D. Ferrus-Suspedra, M. T. M. Koper (2016) The importance of nickel oxyhydroxide deprotonation on its activity towards electrochemical water oxidation, Chemical Science 7(4): 2639-2645 view paper >

R. K. Dubey, D. Inan, S. Sengupta, E. J. R. Sudhölter, F. C. Grozema, W. F. Jager (2016) Tunable and highly efficient light-harvesting antenna systems based on 1,7-perylene-3,4,9,10-tetracarboxylic acid derivatives, Chemical Science 7(6): 3517-3532 view paper >

S. Esiner, H. Van Eersel, G. W. P. Van Pruissen, M. Turbiez, M. M. Wienk ,R. A. J. Janssen (2016) Water Splitting with Series-Connected Polymer Solar Cells, ACS Applied Materials and Interfaces 8(40): 26972-26981 view paper >

S. Esiner, G. W. P. Van Pruissen, M. M. Wienk R. A. J. Janssen (2016) Optimized light-driven electrochemical water splitting with tandem polymer solar cells, Journal of Materials Chemistry A 4(14): 5107-5114 view paper >

K. S. Joya, Z. Ahmad, Y.F. Joya, A.T. Garcia-Esparza, H. J. De Groot (2016) Efficient electrochemical water oxidation in neutral and near-neutral systems with a nanoscale silver-oxide catalyst, Nanoscale 8: 15033-15040 view paper >

K. S. Joya, H. J. De Groot (2016) Controlled Surface-Assembly of Nanoscale Leaf-Type Cu-Oxide Electrocatalyst for High Activity Water Oxidation, ACS Catalysis 2016, 6 (3), pp 1768–1771 view paper >

J. M. Koelewijn, M. Lutz, W. I. Dzik, R. J. Detz, J. N. H. Reek (2016) Reaction progress kinetic analysis as a tool to reveal ligand effects in Ce(IV)-driven IrCp*-catalyzed water oxidation, ACS Catalysis 6(6): 3418-3427 view paper >

J. M. Koelewijn, M. Lutz, R. J. Detz, J. N. H. Reek (2016) Anode Preparation Strategies for the Electrocatalytic Oxidation of Water Based on Strong Interactions between Multiwalled Carbon Nanotubes and Cationic Acetylammonium Pyrene Moieties in Aqueous Solutions, ChemPlusChem 81(10): 1098-1106 view paper >

L-H. Lai, W. Gomulya, M. Berghuis, L. Protesescu, R. J. Detz, Reeks, M.V. Kovalenko, M. A. Loi (2016) Organic-Inorganic Hybrid Solution-Processed H2-Evolving Photocathodes, ACS Applied Materials and Interfaces 7(34): 19083-19090 view paper >

A. Milbrat, R. Elbersen, R. Kas, R. M. Tiggelaar, H. Gardeniers, G. Mul, J. Huskens (2016) Spatioselective Electrochemical and Photoelectrochemical Functionalization of Silicon Microwires with Axial p/n Junctions, Advanced Materials 28(7): 1400-1405 view paper >

M.A. Modestino, D. Fernandez Rivas, S.M.H. Hashemi, J.G.E. Gardeniers, D. Psaltis (2016) The potential for microfluidics in electrochemical energy systems, Energy and Environmental Science 9(11): 3381-3391 view paper >

V.I. Novoderezhkin, R. Croce, Md. Wahadoszamen, I. Polukhina, E. Romero, R. van Grondelle (2016) Mixing of exciton and charge-transfer states in light-harvesting complex Lhca4†, Phys Chem Chem Phys 16(28): 19368-19377 view paper >

S. Y. Park, E. M. Hong, D. C. Lim, J. Y. Lee,G. Mul (2016) Photoactive area dependent electrochemical characteristics of photoelectrochemical cells, Journal of the Electrochemical Society 163(2): H105-H109 view paper >

L. Polak, J. H. Rector, M. J. Slaman,R. J. Wijngaarden (2016) NaTaO3 Photoanode for Bias-Free Water Splitting: A Photo-Electrochemical and Kelvin Probe Surface Photovoltage Study, Journal of Physical Chemistry C 120(41): 23559-23565 view paper >

L. Polak, T. P. N. Veeken, J. Houtkamp, M. J. Slaman, S. M. Kars, J. H. Rector,R. J. Wijngaarden (2016) Two-step sputter-hydrothermal synthesis of NaTaO3 thin films, Thin Solid Films 603: 413-417 view paper >

L. Polak,R. J. Wijngaarden (2016) Preventing probe induced topography correlated artifacts in Kelvin Probe Force Microscopy, Ultramicroscopy 171: 158-165 view paper >

L. Polak, R. J. Wijngaarden (2016) Two competing interpretations of Kelvin probe force microscopy on semiconductors put to test, Physical Review B - Condensed Matter and Materials Physics 93(19) view paper >

J.M. de Ruiter, R. L. Purchase, A. Monti, C.J.M. van der Ham, M.P. Gullo, Y. F. Joya, M. D'Angelantonio, A. Barbieri, D. G. H. Hetterscheid, H. J. M. De Groot, F. Buda (2016) Electrochemical and Spectroscopic Study of Mononuclear Ruthenium Water Oxidation Catalysts: A Combined Experimental and Theoretical Investigation, ACS Catalysis 6: 7340-7349 view paper >

S. Shao, M. Abdu-Aguye, L. Qiu, L. H. Lai, J. Liu, S. Adjokatse, F. Jahani, M. E. Kamminga, G. H. Ten Brink, T. T. M. Palstra, B. J. Kooi, J. C. Hummelen,M. Antonietta Loi (2016) Elimination of the light soaking effect and performance enhancement in perovskite solar cells using a fullerene derivative, Energy and Environmental Science 9(7): 2444-2452 view paper >

Wetenschappelijke publicaties Kunstmatige bladeren in 2015

F. Calle-Vallejo, O. A. Díaz-Morales, M. J. Kolb, M. T. M. Koper (2015) Why is bulk thermochemistry a good descriptor for the electrocatalytic activity of transition metal oxides?, ACS Catalysis 5(2): 869-873 view paper >

Chen, H. C., D. G. H. Hetterscheid, R. M. Williams, J. I. Van Der Vlugt, J. N. H. Reek and A. M. Brouwer (2015). Platinum(ii)-porphyrin as a sensitizer for visible-light driven water oxidation in neutral phosphate buffer. Energy and Environmental Science 8(3): 975-982. view article >

H. C. Chen, C. P. Hsu, J. N. H. Reek, R. M. Williams,A. M. Brouwer (2015) Highly Soluble Benzo[ghi]perylenetriimide Derivatives: Stable and Air-Insensitive Electron Acceptors for Artificial Photosynthesis, ChemSusChem 8(21): 3639-3650 view paper >

De Respinis, M., K. S. Joya, H. J. M. De Groot, F. D'Souza, W. A. Smith, R. Van De Krol and B. Dam (2015). Solar water splitting combining a BiVO4 light absorber with a ru based molecular cocatalyst. Journal of Physical Chemistry C 119(13): 7275-728. view article >

M. De Respinis, M. Fravventura, F. F. Abdi, H. Schreuders, T. J. Savenije, W. A. Smith, B. Dam, R. Van De Krol (2015) Oxynitrogenography: Controlled Synthesis of Single-Phase Tantalum Oxynitride Photoabsorbers, Chemistry of Materials 27(20): 7091-7099 view paper >

Dr. Remko J. Detz, Zohar Abiri, Dr. Alexander M. Kluwer and Prof. Dr. Joost N. H. Reek, A Fluorescence-Based Screening Protocol for the Identification of Water Oxidation Catalysts. ChemSusChem, Volume 8, Issue 18, pages 3057–3061, September 21, 2015 view article >

O. Diaz-Morales, I. Ledezma-Yanez, M. T. M. Koper, F. Calle-Vallejo (2015) Guidelines for the Rational Design of Ni-Based Double Hydroxide Electrocatalysts for the Oxygen Evolution Reaction, ACS Catalysis 5(9): 5380-5387 view paper >

Dubey, R.K., N. Westerveld, F.C. Grozema, E.J.R. Sudholter and W.F. Jager (2015). Facile Synthesis of Pure 1,6,7,12-Tetrachloroperylene-3,4,9,10-tetracarboxy Bisanhydride and Bisimide. Organic Letters 17: 1882-1885. view article >

Elbersen, R., R. M. Tiggelaar, A. Milbrat, G. Mul, H. Gardeniers and J. Huskens (2015). Controlled doping methods for radial p/n junctions in silicon. Advanced Energy Materials 5(6). view article >

S. Esiner, R. E. M. Willems, A. Furlan, W. Li, M. M. Wienk, R. A. J. Janssen (2015) Photoelectrochemical water splitting in an organic artificial leaf, Journal of Materials Chemistry A 3(47): 23936-23945 view paper >

S. Ganapathy, O. Bechau, H. Venselaar, S. Frölich, J.B. van der Steen, Q. Chen, S. Radwan, J. Lugtenburg, Pascal van Alphen and Klaas J. Hellingwerf, H.J.M. de Groot, W.J. de Grip (2015) Modulation of spectral properties and pump activity of proteorhodopsins by retinal analogues, Biochemical Journal 467(2): 333-343 view paper >

Han, L., I. A. Digdaya, T. W. F. Buijs, F. F. Abdi, Z. Huang, R. Liu, B. Dam, M. Zeman, W. A. Smith and A. H. M. Smets (2015). Gradient dopant profiling and spectral utilization of monolithic thin-film silicon photoelectrochemical tandem devices for solar water splitting. Journal of Materials Chemistry A 3(8): 4155-4162. view article >

Ibadillah, A.D., L. Han, T.W.F. Buijs, M. Zeman, B. Dam, A. H. M. Smets and W.A. Smith (2015). Extracting large photovoltages from a-SiC photocathodes with an amorphous TiO2 front surface field layer for solar hydrogen evolution. Energy and Environmental Science 8: 1585-1593. view article >

L. H. Lai, M. J. Speirs, F. K. Chang, L. Piveteau, M. V. Kovalenko, J. S. Chen, J. J. Wu, M. A. Loi (2015) Increasing photon absorption and stability of PbS quantum dot solar cells using a ZnO interlayer, Applied Physics Letters 107(18) view paper >

X. Liu, H. C. Chen, X. Kong, Y. Zhang, L. Tu, Y. Chang, F. Wu, T. Wang, J. N. H. Reek, A. M. Brouwer, H. Zhang (2015) Near infrared light-driven water oxidation in a molecule-based artificial photosynthetic device using an upconversion nano-photosensitizer, Chemical Communications 51(65): 13008-13011 view paper >

T. Mathes, J. Ravensbergen, M. Kloz, T. Gleichmann, K. D. Gallagher, N. C. Woitowich, R. St. Peter, S. E. Kovaleva, E. A. Stojkovic, J. T. M. Kennis (2015) Femto- to Microsecond Photodynamics of an Unusual Bacteriophytochrome, Journal of Physical Chemistry Letters 6(2): 239-243 view paper >

Nasalevich, M. A., R. Becker, E. V. Ramos-Fernandez, S. Castellanos, S. L. Veber, M. V. Fedin, F. Kapteijn, J. N. H. Reek, J. I. Van Der Vlugt and J. Gascon (2015). Co@NH2-MIL-125(Ti): Cobaloxime-derived metal-organic framework-based composite for light-driven H2 production. Energy and Environmental Science 8(1): 364-375. view article >

Park, S.Y., D.C. Lim, E.M. EHong, J.Y. Lee, J. Heo, J.H. Lim, C.L. Lee, Y.D. Kim and Guido Mul (2015). Selective modulation of charge-carrier transport of a photoanode in a photoelectrochemical cell by a graphitized fullerene interfacial layer. ChemSusChem 8(1). view article >

Purchase, R. L. and H. J. M. De Groot (2015). Biosolar cells: Global artificial photosynthesis needs responsive matrices with quantum coherent kinetic control for high yield. Interface Focus 5(3): 1-16. view article>

J. Ravensbergen, A. Antoniuk-Pablant, B. D. Sherman, G. Kodis, J. D. Megiatto, D. D. Méndez-Hernández, R. N. Frese, R. Van Grondelle, T. A. Moore, A. L. Moore, D. Gust, J. T. M. Kennis (2015) Spectroscopic Analysis of a Biomimetic Model of Tyr<inf>Z</inf> Function in PSII, Journal of Physical Chemistry B 119(37): 12156-12163 view paper >

J. Ravensbergen, C. L. Brown, G. F. Moore, R. N. Frese, R. Van Grondelle, D. Gust, T. A. Moore, A. L. Moore, J. T. M. Kennis (2015) Kinetic isotope effect of proton-coupled electron transfer in a hydrogen bonded phenol-pyrrolidino[60]fullerene, Photochemical and Photobiological Sciences 14(12): 2147-2150 view paper >

J. Shen, R. Kortlever, R. Kas, Y. Y. Birdja, O. Diaz-Morales, Y. Kwon, I. Ledezma-Yanez, K. J. P. Schouten, G. Mul, M. T. M. Koper (2015) Electrocatalytic reduction of carbon dioxide to carbon monoxide and methane at an immobilized cobalt protoporphyrin, Nature Communications 6 view paper >

Speirs, M. J., D. M. Balazs, H. H. Fang, L. H. Lai, L. Protesescu, M. V. Kovalenko and M. A. Loi (2015). Origin of the increased open circuit voltage in PbS-CdS core-shell quantum dot solar cells. Journal of Materials Chemistry A 3(4): 1450-1457. view article >

Anthony Standing, Simone Assali, Lu Gao, Marcel A. Verheijen, Dick van Dam, Yingchao Cui, Peter H. L. Notten, Jos E. M. Haverkort & Erik P. A. M. Bakkers (2015). Efficient water reduction with gallium phosphide nanowires. Nature Communications 6, Article number: 7824 doi:10.1038/ncomms8824. Published 17 July 2015 view article >

B. J. Trzesniewski, O. Diaz-Morales, D. A. Vermaas, A. Longo, W. Bras, M. T. M. Koper, W. A. Smith (2015) In Situ Observation of Active Oxygen Species in Fe-Containing Ni-Based Oxygen Evolution Catalysts: The Effect of pH on Electrochemical Activity, Journal of the American Chemical Society 137(48): 15112-15121 view paper >

T. C. Wang, Y. H. Su, Y. K. Hung, C. S. Yeh, L. W. Huang, W. Gomulya, L. H. Lai, M. A. Loi, J. S. Yang, J. J. Wu (2015) Charge collection enhancement by incorporation of gold-silica core-shell nanoparticles into P3HT:PCBM/ZnO nanorod array hybrid solar cells, Physical Chemistry Chemical Physics 17(30): 19854-19861 view paper >

Wetser, Koen, Emilius Sudirjo, Cees J. N. Buisman and David P. B. T. B. Strik (2015). Electricity generation by a plant microbial fuel cell with an integrated oxygen reducing biocathode. Applied Energy 137(0): 151-15. view aricle >

Wetenschappelijke publicaties Kunstmatige bladeren in 2014

Clarke, T. M., J. Peet, C. Lungenschmied, N. Drolet, X. Lu, B. M. Ocko, A. J. Mozer and M. A. Loi (2014). The role of emissive charge transfer states in two polymer-fullerene organic photovoltaic blends: Tuning charge photogeneration through the use of processing additives. Journal of Materials Chemistry A 2(31): 12583-12593. view article >

De Respinis, S., V. Monnin, V. Girard, M. Welker, M. Arsac, B. Cellière, G. Durand, P. P. Bosshard, C. Farina, M. Passera, A. Van Belkum, O. Petrini and M. Tonolla (2014). Matrix-assisted laser desorption ionization-time of flight (MALDITOF) mass spectrometry using the Vitek MS system for rapid and accurate identification of dermatophytes on solid cultures. Journal of Clinical Microbiology 52(12): 4286-4292. view article >

Derossi, S., R. Becker, P. Li, F. Hartl and J. N. H. Reek (2014). A phosphoramidite-based [FeFe]H2ase functional mimic displaying fast electrocatalytic proton reduction. Dalton Transactions 43(22): 8363-8367. view article >

Diaz-Morales, O., T. J. P. Hersbach, D. G. H. Hetterscheid, J. N. H. Reek and M. T. M. Koper (2014). Electrochemical and spectroelectrochemical characterization of an iridium-based molecular catalyst for water splitting: Turnover frequencies, stability, and electrolyte effects. Journal of the American Chemical Society 136(29): 10432-10439. view article >

Eisenmayer, T.J. and F. Buda (2014). Real-time Simulations of Photoinduced Coherent Charge Transfer and Proton-Coupled Electron Transfer. Chemphyschem 15(15): 3258-3263. view article >

Gao, L., Y. Cui, J. Wang, A. Cavalli, A. Standing, T. T. T. Vu, M. A. Verheijen, J. E. M. Haverkort, E. P. A. M. Bakkers and P. H. L. Notten (2014). Photoelectrochemical hydrogen production on InP nanowire arrays with molybdenum sulfide electrocatalysts. Nano Letters 14(7): 3715-3719. view article >

Joya, K. S. and H. J. M. De Groot (2014). Artificial leaf goes simpler and more efficient for solar fuel generation. ChemSusChem 7(1): 73-76. view article >

Joya, K. S., Y. F. Joya and H. J. M. De Groot (2014). Ni-based electrocatalyst for water oxidation developed In-situ in a HCO3 -/CO2 system at near-neutral pH. Advanced Energy Materials 4(9). view article >

Joya, K. S., K. Takanabe and H. J. M. De Groot (2014). Surface generation of a cobalt-derived water oxidation electrocatalyst developed in a neutral HCO3 -/CO2 system. Advanced Energy Materials 4(16). view article >

Karabudak, E. (2014). Micromachined silicon attenuated total reflectance infrared spectroscopy: An emerging detection method in micro/nanofluidics. Electrophoresis 35(2-3): 236-244. view article >

Lai, L-H., W. Gomulya, L. Protesescu, M.V. Kovalenko and M. A. Loi (2014). High performance photoelectrochemical hydrogen generation and solar cells with a double type II heterojunction. Physical Chemistry Chemical Physics PCCD 16(16): 7531-7537. view article >

Lai, L.H. , L Protesescu, Kovalenko M.V. and M.A. Loi (2014). Sensitized Solar Cells with Colloidal PbS/CdS Core/Shell Quantum Dots. Physical Chemistry Chemical Physics 16: 736-742  view article>

Lignos, I., L. Protesescu, S. Stavrakis, L. Piveteau, M. J. Speirs, M. A. Loi, M. V. Kovalenko and A. J. DeMello (2014). Facile droplet-based microfluidic synthesis of monodisperse IV-VI semiconductor nanocrystals with coupled in-line NIR fluorescence detection. Chemistry of Materials 26(9): 2975-2982. view article >

Loi, M.A. and A. Troisi (2014). Charge generation mechanism in organic solar cells. Physical Chemistry Chemical Physics 16(38): 20277-20278. view article >

Monti, A., H.J.M. de Groot and F. Buda (2014). In-Silico Design of a Donor–Antenna–Acceptor Supramolecular Complex for Photoinduced Charge Separation. The Journal of Physical Chemistry 118. view article >

Polak, L. , S.  Man de and R.J. Wijngaarden (2014). Note: Switching crosstalk on and off in Kelvin probe force microscopy. Review of Scientific Instruments 85(4): 046111 - 046111-3  view article>

Rombouts, J. A., J. Ravensbergen, R. N. Frese, J. T. M. Kennis, A. W. Ehlers, J. C. Slootweg, E. Ruijter, K. Lammertsma and R. V. A. Orru (2014). Synthesis and photophysics of a red-light absorbing supramolecular chromophore system. Chem. Eur. J. 20(33): 10285-10291. view article >

Sengupta, S., R.K. Dubey, R.W.M. Hoek, S.P.P. van Eeden, D.D. Gubas, F.C. Grozema, E.J.R. Sudholter and W.F. Jager (2014). Synthesis of Regioisomerically Pure 1,7-Dibromoperylene-3,4,9,10- tetracarboxylic Acid Derivatives. The Journal of Organic Chemistry 79: 6655-6662. view article >

P. A. Szilágyi, I. Weinrauch, H. Oh, M. Hirscher, J. Juan-Alcañiz, P. Serra-Crespo, M. De Respinis, B. J. Trzesniewski, F. Kapteijn, H. Geerlings, J. Gascon, B. Dam, A. Grzech, R. Van De Krol (2014) Interplay of linker functionalization and hydrogen adsorption in the metal-organic framework MIL-101, Journal of Physical Chemistry C 118(34): 19572-19579 view paper >

Wetenschappelijke publicaties kunstmatige bladeren van voor 2014


Nanowire solar water splitting

A. Standing, Eindhoven University, 2016

view dissertation >


Hydrogenase Mimics for Proton Reduction Catalysis: Supramolecular proton reduction catalysts with appended redox-active and proton-responsive ligands towards application in a molecular artificial leaf

R. Becker, University of Amsterdam, 2016

view dissertation >


Solar energy storage: novel solar-to-fuel and solar-to-electric approaches: Use of sunlight and water to power the world

M. de Respinis, University Delft, 2016

view dissertation >

Organic-inorganic Hybrid Nanostructured Materials for Photovoltaics and Solar Fuels

Lai-Huang Lai (2016), Rijks Universiteit Groningen
The use of low dimensional materials for solar energy to fuel conversion has been emerging very recently as a possible promising strategy. In this thesis, the possibility of solar energy to H2 fuel conversion via organic-inorganic hybrid nanostructured materials is investigated. The aim of this thesis is to unravel the properties of emerging low-dimensional materials, i.e. colloidal quantum dots and semiconducting carbon nanotubes as active components in sensitized solar cells and water splitting photoelectrodes. The exciton and free carrier dynamics in these hybrid systems in order to gain better understanding of the limiting factors of these materials and further improve the device performance are investigated.

view dissertation >


N-heteorcyclic carbene IrCp *LX2, molecular water oxidation catalysis; mechanistic insights and immobilization strategies

Koelewijn, J.M. (2016), Universiteit van Amsterdam
Martin Koelewijn behandelt de ontwikkeling van een relatief nieuwe technologie voor de productie van waterstof. Deze technologie is gebaseerd op het concept van kunstmatige fotosynthese. Waterstofgas is een ideale kandidaat om als koolstof-neutrale brandstof te dienen. Waterstof wordt echter alleen als duurzaam en niet-vervuilend beschouwd als het wordt geproduceerd vanuit hernieuwbare grondstoffen. Om dit te realiseren moeten er technologieën worden ontwikkeld om zonne-energie om te zetten in waterstof, waarbij gebruik wordt gemaakt van H2O als hernieuwbare grondstof.

view dissertation >


Solar fuels via artificial photosynthesis: From homogeneous photocatlysis in solution to a photoelectrochemical cell.

Chen, Hung-cheng (2016), Universiteit van Amsterdam
The conversion and storage of solar energy into fuels provides a valuable solution for the future energy demand of our society. Making fuels via artificial photosynthesis, the so-called solar-to-fuel approach, is viewed as one of the most promising ways to produce clean and renewable energy. Solar-driven splitting of water into O2 and H2 via artificial photosynthesis is the key challenge in this field. The obtained hydrogen can be further processed to create other fuels such as formic acid, methanol, or higher alkanes.
This thesis describes the development of molecular materials for their use in Solar Fuel devices. Porphyrin-based photosensitizers were shown to be compatible with photocatalytic water oxidation reactions in high concentration of neutral phosphate buffer solution. Moreover, it also describes a series of novel benzo[ghi]perylenetriimide (BPTI) derivatives that potentially are the ideal electron acceptors in molecule based artificial photosynthesis devices.

view dissertation >

Photoelectrochemical water splitting – Optimizing Interfaces and Light Absorption

Sun-Young Park (2015), TU Twente

In this thesis several photoelectrochemical water splitting devices based on semiconductor materials were investigated. The aim was the design, characterization, and fabrication of solar-to-fuel devices which can absorb solar light and split water to produce hydrogen.

view dissertation >




Photophysics of solar fuel materials

Van Ravensbergen, Janneke (2015), Vrije Universiteit Amsterdam

The energy of sunlight can be used to drive a chemical reaction that is thermodynamically uphill. High energy molecules that are produced in this way are called ‘solar fuel’. To improve the solar-to-fuel energy conversion efficiency, it is important to understand the photophysical pathways that lead to —
or compete with — fuel production. In this thesis transient absorption spectroscopy (pump-probe) is used to study the photophysics of various materials in the context of solar fuel research.



Catalysis of the electrochemical water oxidation to oxygen

Diaz Morales, Oscar (2015), Leiden University.

This thesis discusses the parameters affecting the catalysis for the electrochemical conversion of water into oxygen. The slow kinetics for the oxygen evolution reaction (OER) is one of the major bottlenecks in the solar energy-to-fuels conversion process, which reduces the efficiency for the photo-electrochemical fuels generation (artificial photosynthesis). The work shows that to enhance the kinetics for the oxygen evolution reaction, one should not only look at the catalysts but also consider the synergy between catalyst and electrolyte. A more general approach that considers the electrochemical interface as a whole (electrode + electrolyte) is therefore the most promising route towards optimal activity.

view dissertation >

Fabrication and doping of silicon micropillar arrays for solar light harvesting

Ebersen, Rick (2015) TU Twente
Silicon is a widely used material in the photovoltaic industry, and its advantageous properties and availability ensure that it can play an important role in the transition to a sustainable production of energy. Apart from already commercially available PV cells, silicon can also take part in new alternatives, such as solar-to-fuel (S2F) devices. However, before silicon can be used in such a device, it has to be altered to withstand different conditions, for example a water environment in case of a water splitting S2F device. Moreover, the structuring of silicon, e.g. into micropillar arrays, provides ways to enhance the performance of both PV and S2F devices. This thesis discusses the use of silicon as a base material for the structuring of solar cells, and their optimization and modification.

view dissertation >

Organic Artificial Leaves for Photoelectrochemical Water Splitting

Esiner, Serkan (2015), TU Eindhoven

view dissertation >

Complexes for electro- and phocatalytic proton reduction

Bosch, B. van den (2015),  University of Amsterdam.
The direct conversion of sunlight into fuels is a promising strategy to satisfy mankind’s demand for energy in a sustainable way. One way to do this is the light-driven water splitting reaction, which consists of two half reactions: water oxidation and proton reduction. Systems capable of performing these two half reactions photocatalytically are intensively studied. Bart van den Bosch deals with the development of systems capable of photo- and/or electrocatalytic proton reduction.

The summary can be downloaded here (PDF).

Coherent Dynamics in Solar Energy Transduction.

Eisenmayer, T. (2014), Leiden University
This thesis is concerned with the transfer of energy from light to matter. Over a century ago it was established that light consists of packets of energy [1], now known as photons. Not much later the energy levels of matter at the atomic scale were found to be discrete [2]. These phenomena required a new physical description that has become the theory of quantum mechanics [3]. Now, this theory of light and matter could contribute to tackling a fundamental socioeconomic and technological challenge: To find a sustainable supply of useful energy that is cheap, abundant and generated on-the-spot.

view dissertation >


In silico study of reaction mechanisms and design principles for water oxidation catalysts

Vallés-Pardo, J.L. (2012) , Leiden University
Throughout the last decades the water oxidation process has been extensively investigated. However, open questions remain on the reaction mechanism and the possible intermediates in the catalytic cycle. Indeed, different catalysts can function through different reaction routes. Some of them work in a proton-coupled electron transfer (PCET) pathway, while other catalysts have a non-PCET behaviour. Some of these problems lie in the very short lifetime of intermediates, which makes it difficult to characterize them experimentally. Within this context, DFT calculations represent a very useful tool. In fact quantum-mechanical computational tools allow exploring and analyzing the possible intermediates and study and compare different reaction pathways in order to find the energetically most likely one. In the same way the thermodynamics of the catalytic cycle and the kinetics of the reaction coordinates can be analyzed. The specific aim of this thesis is the study of different catalysts and reaction pathways to find clues about the mechanism of the reaction and develop guiding principles for the design of efficient water oxidation complexes.

view dissertation >

Molecular Catalytic System for Efficient Water Splitting

K. S. Joya (2011), Leiden University
The aim of this dissertation is to construct and explore artificial oxygen evolving complexes that are synthetically accessible, stable, functionally robust and efficient. To achieve this, a class of mono metal water splitting catalysts is introduced in this manuscript and exploitation of these complexes in homogeneous catalysis and in electrochemical studies with surface immobilized catalyst assemblies has been discussed. The catalysts are comprised of a single centre ruthenium or iridium metal core coordinated to a dinitrogen ligand and stabilized by a cyclic conjugated hydrocarbon. Homogeneous catalytic water oxidation is performed with a chemical oxidant as catalyst activator. For electro-assisted experiments, the catalyst complexes are functionalized with carboxylic or phosphonic acid linker units on the dinitrogen ligand that serve as anchoring sites for deposition on conducting oxide electrodes. The electrochemical water splitting systems with molecular catalysts have potential application in e.g. rooftop devices to make personalized energy carriers. The proposed “Artificial Leaf” will soon be the future outcome of the present day technology and efforts in this field. Cheap and easy accessible hydrogen will not only serve as fuel for transportation but also as driving force for green power generation.

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Overige publicaties

R. L. Purchase , H. J. M. de Groot (2015). Biosolar cells: global artificial photosynthesis needs responsive matrices with quantum coherent kinetic control for high yield. Interface Focus 6 June 2015, Vol. 5, Issue 3. DOI: 10.1098/rsfs.2015.0014 Published 24 April 2015.

In a contribution to a theme issue ‘Do we need a global project on artificial photosynthesis (soIar fuels and chemicals)?’ of the Royal Society's magazine Interface Focus Robin Purchase and Huub de Groot discuss why we should consider developing artificial photosynthesis with the tandem approach followed by the Dutch BioSolar Cells consortium, a current operational paradigm for a global artificial photosynthesis project. They weigh the advantages and disadvantages of a tandem converter against other approaches, including biomass.

Other contributions can be downloaded from this edition's webpage.

Joya, K. S. (2015). Molecular catalysts and organometallics for water oxidation;  Organometallics and Related Molecules for Energy Conversion (Green Chemistry and Sustainable Technology Series), Springer, 2015,. Leiden University.
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This book presents a critical perspective of the applications of organometallic compounds (including those with metal or metalloid elements) and other related metal complexes as versatile functional materials in the transformation of light into electricity (solar energy conversion) and electricity into light (light generation in light emitting diode), in the reduction of carbon dioxide to useful chemicals, as well as in the safe and efficient production and utilization of hydrogen, which serves as an energy storage medium (i.e. energy carrier).
This book focuses on recent research developments in these emerging areas, with an emphasis on fundamental concepts and current applications of functional organometallic complexes and related metal-based molecules for energy research. With contributions from front-line researchers in the field from academia and industry, this timely book provides a valuable contribution to the scientific community in the field of energy science related to metal-based molecular materials.

Groot, H. de (2014). The Artificial Leaf; The quest to outsmart nature. Renewables and more, uitgave ter gelegenheid van 100 jaar Shell Research, juni 2014, Oxford University Press. view in iBooks >

In The Colours of Energy – Essays on the Future of Energy in Society, leading energy thinkers explore the future of energy in society. In 36 provoking and inspiring essays, they question established truths and chart possible paths towards a more sustainable future. They share their insights on how to provide energy to an increasingly affluent and growing world population within the boundaries of our planet.
The 55 authors are thought leaders in industry, government and academia. Their thinking covers the full range of the issues related to energy transitions. Subjects are as varied as geopolitics, mobility, biomass, geologic climate records, nuclear energy and the ethics of oil recovery.

Joya, K. S. and H. J. M. De Groot (2011). Efficient water splitting by single site ruthenium catalyst. Proceedings 4th European Conference on Chemistry and Life Sciences.


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