A natural photoelectrochemical cell for water splitting: Implications for early Earth and Mars

2012 ◽  
Vol 97 (10) ◽  
pp. 1804-1807 ◽  
Author(s):  
C. M. Eggleston ◽  
J. R. Stern ◽  
T. M. Strellis ◽  
B. A. Parkinson
Keyword(s):  
Water Splitting ◽  
Photoelectrochemical Cell ◽  
Early Earth

A natural photoelectrochemical cell for water splitting: Implications for early Earth and Mars

ENERGYO ◽  
2018 ◽  
Author(s):  
Carrick M. Eggleston ◽  
Justin R. Stern ◽  
Tess M. Strellis ◽  
Bruce A. Parkinson
Keyword(s):  
Water Splitting ◽  
Photoelectrochemical Cell ◽  
Early Earth

A silicon-based hybrid photocathode modified with an N5-chelated nickel catalyst in a noble-metal-free biomimetic photoelectrochemical cell for solar-driven unbiased overall water splitting

2021 ◽  
Author(s):  
Lunlun Gong ◽  
Peili Zhang ◽  
Guoquan Liu ◽  
Yu Shan ◽  
Mei Wang
Keyword(s):  
Water Splitting ◽  
Nickel Catalyst ◽  
Noble Metal ◽  
Photoelectrochemical Cell ◽  
Metal Free ◽  
Overall Water Splitting ◽  
Redox Catalysts ◽  
Silicon Based ◽  
Modification Of The Surface

Modification of the surface of semiconductor-based photoelectrodes with molecular redox catalysts gives a way to realize atom-efficient catalysis for photoelectrochemical (PEC) H2 and O2 evolution. However, the diversity of immobilized...

scholarly journals Integrated Membrane-Electrode-Assembly Photoelectrochemical Cell under Various Feed Conditions for Solar Water Splitting

2018 ◽  
Vol 166 (5) ◽  
pp. H3020-H3028 ◽  
Author(s):  
Tobias A. Kistler ◽  
David Larson ◽  
Karl Walczak ◽  
Peter Agbo ◽  
Ian D. Sharp ◽  
...  
Keyword(s):  
Water Splitting ◽  
Membrane Electrode Assembly ◽  
Photoelectrochemical Cell ◽  
Membrane Electrode ◽  
Solar Water ◽  
Solar Water Splitting

scholarly journals Photoactive Tungsten-Oxide Nanomaterials for Water-Splitting

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1871
Author(s):  
Yerkin Shabdan ◽  
Aiymkul Markhabayeva ◽  
Nurlan Bakranov ◽  
Nurxat Nuraje
Keyword(s):  
Tungsten Oxide ◽  
Water Splitting ◽  
Diffusion Length ◽  
Photogenerated Electron ◽  
Photoelectrochemical Cell ◽  
High Electron ◽  
Applied Bias ◽  
Electron Hole ◽  
Research Directions ◽  
Photocatalytic Applications

This review focuses on tungsten oxide (WO3) and its nanocomposites as photoactive nanomaterials for photoelectrochemical cell (PEC) applications since it possesses exceptional properties such as photostability, high electron mobility (~12 cm2 V−1 s−1) and a long hole-diffusion length (~150 nm). Although WO3 has demonstrated oxygen-evolution capability in PEC, further increase of its PEC efficiency is limited by high recombination rate of photogenerated electron/hole carriers and slow charge transfer at the liquid–solid interface. To further increase the PEC efficiency of the WO3 photocatalyst, designing WO3 nanocomposites via surface–interface engineering and doping would be a great strategy to enhance the PEC performance via improving charge separation. This review starts with the basic principle of water-splitting and physical chemistry properties of WO3, that extends to various strategies to produce binary/ternary nanocomposites for PEC, particulate photocatalysts, Z-schemes and tandem-cell applications. The effect of PEC crystalline structure and nanomorphologies on efficiency are included. For both binary and ternary WO3 nanocomposite systems, the PEC performance under different conditions—including synthesis approaches, various electrolytes, morphologies and applied bias—are summarized. At the end of the review, a conclusion and outlook section concluded the WO3 photocatalyst-based system with an overview of WO3 and their nanocomposites for photocatalytic applications and provided the readers with potential research directions.

scholarly journals Bandgap Engineering of Double Perovskites for One- and Two-photon Water Splitting

2013 ◽  
Vol 1523 ◽  
Author(s):  
Ivano E. Castelli ◽  
Kristian S. Thygesen ◽  
Karsten W. Jacobsen
Keyword(s):  
Water Splitting ◽  
Double Perovskite ◽  
Photoelectrochemical Cell ◽  
New Combination ◽  
New Materials ◽  
Bandgap Engineering ◽  
Two Photon ◽  
Computational Screening ◽  
Conduction Bands ◽  
Screening Study

ABSTRACTComputational screening is becoming increasingly useful in the search for new materials. We are interested in the design of new semiconductors to be used for light harvesting in a photoelectrochemical cell. In the present paper, we study the double perovskite structures obtained by combining 46 stable cubic perovskites which was found to have a finite bandgap in a previous screening-study.1 The four-metal double perovskite space is too large to be investigated completely. For this reason we propose a method for combining different metals to obtain a desired bandgap. We derive some bandgap design rules on how to combine two cubic perovskites to generate a new combination with a larger or smaller bandgap compared with the constituent structures. Those rules are based on the type of orbitals involved in the conduction bands and on the size of the two cubic bandgaps. We also see that a change in the volume has an effect on the size of the bandgap. In addition, we suggest some new candidate materials that can be used as photocatalysts in one- and two-photon water splitting devices.

Photoelectrochemical water splitting with tailored TiO 2 /SrTiO 3 @g-C 3 N 4 heterostructure nanorod in photoelectrochemical cell

2018 ◽  
Vol 85 ◽  
pp. 5-12 ◽  
Author(s):  
Robabeh Bashiri ◽  
Norani Muti Mohamed ◽  
Nur Amirah Suhaimi ◽  
Muhammad Umair Shahid ◽  
Chong Fai Kait ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Cell

scholarly journals A molecular tandem cell for efficient solar water splitting

2020 ◽  
Vol 117 (24) ◽  
pp. 13256-13260 ◽  
Author(s):  
Degao Wang ◽  
Jun Hu ◽  
Benjamin D. Sherman ◽  
Matthew V. Sheridan ◽  
Liang Yan ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Cell ◽  
Applied Bias ◽  
Tandem Cell ◽  
Solar Water Splitting ◽  
Dye Sensitized ◽  
Solar Conversion ◽  
Artificial Photosynthetic ◽  
Natural Photosynthesis

Artificial photosynthesis provides a way to store solar energy in chemical bonds. Achieving water splitting without an applied external potential bias provides the key to artificial photosynthetic devices. We describe here a tandem photoelectrochemical cell design that combines a dye-sensitized photoelectrosynthesis cell (DSPEC) and an organic solar cell (OSC) in a photoanode for water oxidation. When combined with a Pt electrode for H2evolution, the electrode becomes part of a combined electrochemical cell for water splitting, 2H2O → O2+ 2H2, by increasing the voltage of the photoanode sufficiently to drive bias-free reduction of H+to H2. The combined electrode gave a 1.5% solar conversion efficiency for water splitting with no external applied bias, providing a mimic for the tandem cell configuration of PSII in natural photosynthesis. The electrode provided sustained water splitting in the molecular photoelectrode with sustained photocurrent densities of 1.24 mA/cm2for 1 h under 1-sun illumination with no applied bias.

Effects of yttrium, ytterbium with tungsten co-doping on the light absorption and charge transport properties of bismuth vanadate photoanodes to achieve superior photoelectrochemical water splitting

2020 ◽  
Vol 4 (3) ◽  
pp. 1496-1506 ◽  
Author(s):  
Umesh Prasad ◽  
Jyoti Prakash ◽  
Arunachala M. Kannan
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Water Splitting ◽  
Light Absorption ◽  
Bismuth Vanadate ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Cell ◽  
Co Doping ◽  
Effective Water

Effective water splitting by a photoelectrochemical cell using a BiVO4 photoanode is limited by the light absorption and charge transport properties.

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