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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Enhancing hot-electron generation and transfer from metal to semiconductor in a plasmonic absorber
Hongdong Li,Hongdong Li,Wajid Ali,Wajid Ali,Zuochao Wang,Zuochao Wang,Megersa Feyissa Mideksa,Megersa Feyissa Mideksa,Fei Wang,Fei Wang,Xiaoli Wang,Xiaoli Wang,Lei Wang,Zhiyong Tang,Zhiyong Tang +14 more
TL;DR: In this article, a plasmonic absorber based on metal-semiconductor core-shell nanoparticles (NPs) and metal film was proposed to enhance the hot electron transfer performance.
Journal ArticleDOI
Optical properties of ultrathin Al2O3/ZnO nanolaminates
Roman Viter,Roman Viter,Ieva Baleviciute,A. Abou Chaaya,Lina Mikoliunaite,Zigmas Balevicius,Arunas Ramanavicius,A. Zalesska,V. Vataman,Valentyn Smyntyna,Zanda Gertnere,Donats Erts,Philippe Miele,Mirna Chaker Bechelany +13 more
TL;DR: In this paper, the optical and structural properties of ultrathin Al2O3/ZnO nanolaminates deposited by atomic layer deposition were studied by GIXRD and AFM.
Journal ArticleDOI
Facile fabrication and photoelectrochemical properties of a CuO nanorod photocathode with a ZnO nanobranch protective layer
TL;DR: In this article, the photoelectrochemical properties of CuO/ZnO photo-electrodes fabricated with nanorod and film structures were investigated and compared, and the effect of surface morphology on their photoelectronchemical performance was discussed in detail.
Journal ArticleDOI
CuOx-TiO2 Composites: Electronically Integrated Nanocomposites for Solar Hydrogen Generation
Journal ArticleDOI
CO2 -Reductive, Copper Oxide-Based Photobiocathode for Z-Scheme Semi-Artificial Leaf Structure.
Su Keun Kuk,Jinha Jang,Jinhyun Kim,Youngjun Lee,Young Sin Kim,Bonhyeong Koo,Yang Woo Lee,Jong Wan Ko,Byungha Shin,Jung-Kul Lee,Chan Beum Park +10 more
TL;DR: This work is the first example of wireless solar-driven semi-biological PEC system that uses water as an electron feedstock and fulfilled a bias-free biocatalytic CO2-to-formate conversion under visible light.
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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