Journal ArticleDOI
Highly active oxide photocathode for photoelectrochemical water reduction
Adriana Paracchino,Vincent Laporte,Kevin Sivula,Michael Grätzel,Elijah Thimsen,Elijah Thimsen +5 more
TLDR
A highly active photocathode for solar H(2) production is presented, consisting of electrodeposited cuprous oxide, which was protected against photocathodic decomposition in water by nanolayers of Al-doped zinc oxide and titanium oxide and activated for hydrogen evolution with electroDeposited Pt nanoparticles.Abstract:
A clean and efficient way to overcome the limited supply of fossil fuels and the greenhouse effect is the production of hydrogen fuel from sunlight and water through the semiconductor/water junction of a photoelectrochemical cell, where energy collection and water electrolysis are combined into a single semiconductor electrode. We present a highly active photocathode for solar H(2) production, consisting of electrodeposited cuprous oxide, which was protected against photocathodic decomposition in water by nanolayers of Al-doped zinc oxide and titanium oxide and activated for hydrogen evolution with electrodeposited Pt nanoparticles. The roles of the different surface protection components were investigated, and in the best case electrodes showed photocurrents of up to -7.6 mA cm(-2) at a potential of 0 V versus the reversible hydrogen electrode at mild pH. The electrodes remained active after 1 h of testing, cuprous oxide was found to be stable during the water reduction reaction and the Faradaic efficiency was estimated to be close to 100%.read more
Citations
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Journal ArticleDOI
A H2-evolving photocathode based on direct sensitization of MoS3 with an organic photovoltaic cell.
Tiphaine Bourgeteau,Denis Tondelier,Bernard Geffroy,Bernard Geffroy,Romain Brisse,Christel Laberty-Robert,Stéphane Campidelli,Rémi de Bettignies,Vincent Artero,Serge Palacin,Bruno Jousselme +10 more
TL;DR: An organic solar cell based on a poly-3-hexylthiophene (P3HT):phenyl-C61-butyric acid (PCBM) bulk hetero-junction was directly coupled to molybdenum sulfide resulting in the design of a new type of photocathode for the production of hydrogen as mentioned in this paper.
Journal ArticleDOI
Nanodiamond‐Embedded p‐Type Copper(I) Oxide Nanocrystals for Broad‐Spectrum Photocatalytic Hydrogen Evolution
TL;DR: In this paper, a nanodiamond (ND) composite was proposed to improve the photocatalytic hydrogen evolution reaction (HER) of the p-type photocatalyst Cu2O nanocrystals by nanocomposition.
Journal ArticleDOI
Efficiency and stability of narrow-gap semiconductor-based photoelectrodes
Jianyun Zheng,Jianyun Zheng,Huaijuan Zhou,Yuqin Zou,Ruilun Wang,Yanhong Lyu,San Ping Jiang,Shuangyin Wang +7 more
TL;DR: In this paper, the authors present the advances in the efficiency and stability of narrow-gap semiconductor-based photoelectrodes on three levels: fundamental bottlenecks, existing solution strategies, and applications.
Journal ArticleDOI
Graphitic carbon nitride/Cu2O heterojunctions: Preparation, characterization, and enhanced photocatalytic activity under visible light
TL;DR: In this paper, the p-n junction structure of graphitic carbon nitride (C 3 N 4 ) was synthesized by a hydrothermal method, and the HR-TEM result revealed an intimate interface between C 3 n 4 and Cu 2 o in the heterojunction, and UV-vis diffuse reflection spectra showed their extended spectral response in the visible region compared with pure C n 4.
Journal ArticleDOI
Facile preparation of p-CuO and p-CuO/n-CuWO4 junction thin films and their photoelectrochemical properties
TL;DR: In this paper, the photoelectrochemical properties of CuO and CuWO4-CuO films were studied by photoresponse and current-potential characteristics under 1 sun illumination.
References
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Journal Article
Photoelectrochemical cells : Materials for clean energy
TL;DR: In this paper, the authors look into the historical background, and present status and development prospects for photoelectrochemical cells, based on nanocrystalline materials and conducting polymer films.
Journal ArticleDOI
A Monolithic Photovoltaic-Photoelectrochemical Device for Hydrogen Production via Water Splitting
O. Khaselev,John A. Turner +1 more
TL;DR: Direct water electrolysis was achieved with a novel, integrated, monolithic photoelectrochemical-photovoltaic design that splits water directly upon illumination; light is the only energy input.
Journal ArticleDOI
Cu2O as a photocatalyst for overall water splitting under visible light irradiation
Michikazu Hara,Takeshi Kondo,Mutsuko Komoda,Sigeru Ikeda,Junko N. Kondo,Kazunari Domen,Kiyoaki Shinohara,Akira Tanaka +7 more
TL;DR: In this paper, the photocatalytic water splitting on Cu2O powder proceeds without any noticeable decrease in the activity for more than 1900 h. The authors investigated the decomposition of water into H2 and O2 under visible light irradiation.
Journal ArticleDOI
High Density n-Si/n-TiO2 Core/Shell Nanowire Arrays with Enhanced Photoactivity
TL;DR: It is observed that highly dense Si/TiO(2) core/shell nanowire arrays enhanced the photocurrent by 2.5 times compared to planar Si/ TiO( 2) structure due to their low reflectance and high surface area.
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