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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Latest progress in hydrogen production from solar water splitting via photocatalysis, photoelectrochemical, and photovoltaic-photoelectrochemical solutions
TL;DR: In this paper, a review summa-rizes the very recent progress (mainly in the last 2-3 years) on three major types of solar hydrogen production systems: particulate photocatalysis (PC), photoelectrochemical (PEC), and photovoltaic-photo-electronchemical hybrid systems.
Journal ArticleDOI
Cu2O–Cu Hybrid Foams as High-Performance Electrocatalysts for Oxygen Evolution Reaction in Alkaline Media
TL;DR: In this paper, 3D Cu2O-Cu hybrid foams are developed as high-performance electrocatalysts for OER in alkaline solution, which can provide fast transportation and short diffusion path for electrolyte and evolved O2 bubbles.
Journal ArticleDOI
[Ti8Zr2O12(COO)16] Cluster: An Ideal Inorganic Building Unit for Photoactive Metal–Organic Frameworks
Shuai Yuan,Jun-Sheng Qin,Hai-Qun Xu,Jie Su,Daniel Rossi,Yuanping Chen,Liangliang Zhang,Christina T. Lollar,Qi Wang,Hai-Long Jiang,Dong Hee Son,Hongyi Xu,Zhehao Huang,Xiaodong Zou,Hong-Cai Zhou +14 more
TL;DR: The discovery of the [Ti8Zr2O12(COO)16] cluster and the facile construction of photoactive MOFs from this cluster shall pave the way for the development of future Ti-MOF-based photocatalysts.
Journal ArticleDOI
Highly Photo‐Responsive LaTiO2N Photoanodes by Improvement of Charge Carrier Transport among Film Particles
Jianyong Feng,Wenjun Luo,Tao Fang,Hao Lv,Zhiqiang Wang,Jian Gao,Wenming Liu,Tao Yu,Zhaosheng Li,Zhigang Zou +9 more
TL;DR: In this article, the authors achieved a plateau photocurrent of 6.5 mA cm−2 on the Co3O4 modified LaTiO2N photoanodesis under AM 1.5 G 100 mW cm −2 simulated sunlight.
Journal ArticleDOI
Silicon/hematite core/shell nanowire array decorated with gold nanoparticles for unbiased solar water oxidation.
Xin Wang,Kui-Qing Peng,Ya Hu,Fu-Qiang Zhang,Bo Hu,Li Li,Meng Wang,Xiang-Min Meng,Shuit-Tong Lee +8 more
TL;DR: The facile fabrication of three-dimensional silicon/hematite core/shell nanowire arrays decorated with gold nanoparticles (AuNPs) and their potential application for sunlight-driven solar water splitting are reported.
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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