Journal ArticleDOI
Accelerating materials development for photoelectrochemical hydrogen production: Standards for methods, definitions, and reporting protocols
Zhebo Chen,Thomas F. Jaramillo,Todd G. Deutsch,Alan Kleiman-Shwarsctein,Arnold J. Forman,Nicolas Gaillard,Roxanne Garland,Kazuhiro Takanabe,Clemens Heske,Mahendra K. Sunkara,Eric W. McFarland,Kazunari Domen,Eric L. Miller,John A. Turner,Huyen N. Dinh +14 more
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TLDR
In this paper, a flow chart with standard procedures for PEC characterization techniques for planar photoelectrode materials (i.e., not suspensions of particles) with a focus on single band gap absorbers is presented.Abstract:
Photoelectrochemical (PEC) water splitting for hydrogen production is a promising technology that uses sunlight and water to produce renewable hydrogen with oxygen as a by-product. In the expanding field of PEC hydrogen production, the use of standardized screening methods and reporting has emerged as a necessity. This article is intended to provide guidance on key practices in characterization of PEC materials and proper reporting of efficiencies. Presented here are the definitions of various efficiency values that pertain to PEC, with an emphasis on the importance of solar-to-hydrogen efficiency, as well as a flow chart with standard procedures for PEC characterization techniques for planar photoelectrode materials (i.e., not suspensions of particles) with a focus on single band gap absorbers. These guidelines serve as a foundation and prelude to a much more complete and in-depth discussion of PEC techniques and procedures presented elsewhere.read more
Citations
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Structural, Morphological and Antibacterial Characterization of CuO Nanowires
TL;DR: In this article, the effect of annealing time (i.e. 3, 5, 7, and 9 h) on the morphology and antibacterial properties of the nanowires was studied.
Journal ArticleDOI
Scope and prospect of transition metal-based cocatalysts for visible light-driven photocatalytic hydrogen evolution with graphitic carbon nitride
TL;DR: The role of transition metal derived cocatalyst to improve the hydrogen evolution activity of graphitic carbon nitride has been discussed in this article , where transition metal-based cocatalysts are used to improve charge separation and transport.
Journal ArticleDOI
Insight into the PEC and interfacial charge transfer kinetics at the Mo doped BiVO4 photoanodes
TL;DR: In this paper, the effect of Mo doping on SnO2 buffer layer coated BiVO4 for PEC water splitting was investigated, and it was shown that Mo6+ doping facilitates the hole transfer and suppresses the back reaction.
Journal ArticleDOI
From Extended Nanofluidics to an Autonomous Solar-Light-Driven Micro Fuel-Cell Device.
Yuriy Pihosh,Jin Uemura,Ivan Turkevych,Kazuma Mawatari,Yutaka Kazoe,Adelina Smirnova,Takehiko Kitamori +6 more
TL;DR: A solar-light-driven power source that consists of a micro fuel cell (μFC) and a photocatalytic micro fuel generator (μFG) integrated on a single microfluidic chip achieves remarkable energy density of ca.
Journal ArticleDOI
Controlled nanostructured morphology of BiVO4 photoanodes for efficient on-demand catalysis in solar water-splitting and sustainable water-treatment
Nishad G. Deshpande,Nishad G. Deshpande,Cheol Hyoun Ahn,R.R. Koli,A.S. Jamadar,Dong Su Kim,Y.B. Kim,Su Ho Jung,Hyung Koun Cho +8 more
TL;DR: In this paper, an effective water-splitting and -purification system based on the photocatalytic performance of BiVO4 using a combined nano-structured morphology and crystal facets was reported.
References
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Journal ArticleDOI
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
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Optical Properties and Electronic Structure of Amorphous Germanium
Jan Tauc,R. Grigorovici,A. Vancu +2 more
TL;DR: In this article, the optical constants of amorphous Ge were determined for the photon energies from 0.08 to 1.6 eV, and the absorption is due to k-conserving transitions of holes between the valence bands as in p-type crystals.
Journal ArticleDOI
Powering the planet: Chemical challenges in solar energy utilization
Nathan S. Lewis,Daniel G. Nocera +1 more
TL;DR: Solar energy is by far the largest exploitable resource, providing more energy in 1 hour to the earth than all of the energy consumed by humans in an entire year, and if solar energy is to be a major primary energy source, it must be stored and dispatched on demand to the end user.
Journal ArticleDOI
Conduction in non-crystalline systems V. Conductivity, optical absorption and photoconductivity in amorphous semiconductors
E. A. Davis,Nevill Mott +1 more
TL;DR: In this article, the experimental evidence concerning the density of states in amorphous semiconductors and the ranges of energy in which states are localized is reviewed; this includes d.c and a.c. conductivity, drift mobility and optical absorption.
Journal ArticleDOI
New contributions to the optics of intensely light-scattering materials.
TL;DR: In this paper, the Gurevic and Judd formulas were derived from the Kubelka-Munk differential equations, and they are exact under the same conditions as in this paper, that is, when the material is perfectly dull and when the light, is perfectly diffused or if it is parallel and hits the specimen under an angle of 60° from normal.