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
More filters
Journal ArticleDOI
Nonaqueous synthesis of TiO2–carbon hybrid nanomaterials with enhanced stable photocatalytic hydrogen production activity
TL;DR: In this paper, a series of oleylamine-wrapped ultrathin TiO2 nanosheets at different temperatures in an air or inert atmosphere were shown to improve the activity of these hybrid nanomaterials.
Journal ArticleDOI
Photoelectrochemical deposition of CoP on cuprous oxide photocathodes for solar hydrogen production
Lucas-Alexandre Stern,Laurent Liardet,Matthew T. Mayer,Carlos G. Morales-Guio,Michael Grätzel,Xile Hu +5 more
TL;DR: In this paper, cobalt phosphide (CoP) is photoelectrochemically deposited on a p-type cuprous oxide (p -Cu 2 O) photocathode for solar hydrogen production.
Journal ArticleDOI
Optical and Material Characteristics of MoS2/Cu2O Sensor for Detection of Lung Cancer Cell Types in Hydroplegia
A. G. Mukundan,Shih-Wei Feng,Yuqing Weng,Yu-Ming Tsao,Sofya B. Artemkina,Vladimir E. Fedorov,Yen-Sheng Lin,Yu-Cheng Huang,Hsiang-Chen Wang +8 more
TL;DR: In this paper , n-type MoS2 monolayer flakes are grown through chemical vapor deposition (CVD), and a p-type Cu2O thin film is grown via electrochemical deposition.
Journal ArticleDOI
An efficient self-driving photoelectrocatalytic reactor for synergistic water purification and H2 evolution
TL;DR: This work crafted an automatic photoreactor system, comprising platinum modified p-Si nanowires as a photocathode and TiO2 nanotube arrays as a photoanode for synergistic H2 evolution and water purification, respectively, which exhibited much higher activities than those achieved using other systems so far.
Journal ArticleDOI
Light induced hydrogen generation with silicon-based thin film tandem solar cells used as photocathode
Bernhard Kaiser,Wolfram Calvet,Eswaran Murugasen,Jürgen Ziegler,Wolfram Jaegermann,Sascha E. Pust,Friedhelm Finger,Sascha Hoch,Matthias Blug,Jens Busse +9 more
TL;DR: In this paper, thin film tandem solar cells based on amorphous and microcrystalline silicon are employed as the cathode in a photoelectrochemical converter for solar water splitting.
References
More filters
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.
Related Papers (5)
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
A Monolithic Photovoltaic-Photoelectrochemical Device for Hydrogen Production via Water Splitting
O. Khaselev,John A. Turner +1 more