Electrodeposited p-type Cu2O as photocatalyst for H2 evolution from water reduction in the presence of WO3

Che Chia Hu; Jun Nan Nian; Hsisheng Teng

doi:10.1016/j.solmat.2008.03.012

Electrodeposited p-type Cu₂O as photocatalyst for H₂ evolution from water reduction in the presence of WO₃

Che Chia Hu
, Jun Nan Nian
, Hsisheng Teng

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

211 Citations (Scopus)

Abstract

Different p-type Cu₂O powders were prepared from electrodeposition and subjected to analysis of their photocatalytic activity in water reduction. The electrodeposited Cu₂O powders were obtained by scraping the deposited films off the substrate. Under illumination the Cu₂O powders alone were not able to catalyze H₂ generation from water reduction. However, these Cu₂O powders exhibited photocatalytic activity in H₂ generation when they were coupled with n-type WO₃ in suspensions. The coupling was made to avoid back reactions of the photo-induced charges. The electrodeposited Cu₂O powders showed higher photocatalytic activity than a commercially available Cu₂O powder. The suspension containing electrodeposited Cu₂O with a strong [1 1 1] orientation gave a larger amount of H₂ evolution than that containing Cu₂O with a [1 1 0] orientation. Appropriate crystalline-texture tuning, as well as charge delocalization promotion, is looked to as the key issue for efficient H₂ generation from water reduction over p-type Cu₂O photocatalysts.

Original language	English
Pages (from-to)	1071-1076
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	92
Issue number	9
DOIs	https://doi.org/10.1016/j.solmat.2008.03.012
Publication status	Published - 2008 Sept

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.solmat.2008.03.012

Cite this

@article{1954b806e4aa47308a8a2c07f502e302,

title = "Electrodeposited p-type Cu2O as photocatalyst for H2 evolution from water reduction in the presence of WO3",

abstract = "Different p-type Cu2O powders were prepared from electrodeposition and subjected to analysis of their photocatalytic activity in water reduction. The electrodeposited Cu2O powders were obtained by scraping the deposited films off the substrate. Under illumination the Cu2O powders alone were not able to catalyze H2 generation from water reduction. However, these Cu2O powders exhibited photocatalytic activity in H2 generation when they were coupled with n-type WO3 in suspensions. The coupling was made to avoid back reactions of the photo-induced charges. The electrodeposited Cu2O powders showed higher photocatalytic activity than a commercially available Cu2O powder. The suspension containing electrodeposited Cu2O with a strong [1 1 1] orientation gave a larger amount of H2 evolution than that containing Cu2O with a [1 1 0] orientation. Appropriate crystalline-texture tuning, as well as charge delocalization promotion, is looked to as the key issue for efficient H2 generation from water reduction over p-type Cu2O photocatalysts.",

author = "Hu, \{Che Chia\} and Nian, \{Jun Nan\} and Hsisheng Teng",

note = "Funding Information: This research was supported by the National Science Council of Taiwan (NSC 95-2120-M-006-001 and 95-2221-E-006-408-MY3). Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2008",

month = sep,

doi = "10.1016/j.solmat.2008.03.012",

language = "English",

volume = "92",

pages = "1071--1076",

journal = "Solar Energy Materials and Solar Cells",

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AU - Hu, Che Chia

AU - Nian, Jun Nan

AU - Teng, Hsisheng

N1 - Funding Information: This research was supported by the National Science Council of Taiwan (NSC 95-2120-M-006-001 and 95-2221-E-006-408-MY3). Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2008/9

Y1 - 2008/9

N2 - Different p-type Cu2O powders were prepared from electrodeposition and subjected to analysis of their photocatalytic activity in water reduction. The electrodeposited Cu2O powders were obtained by scraping the deposited films off the substrate. Under illumination the Cu2O powders alone were not able to catalyze H2 generation from water reduction. However, these Cu2O powders exhibited photocatalytic activity in H2 generation when they were coupled with n-type WO3 in suspensions. The coupling was made to avoid back reactions of the photo-induced charges. The electrodeposited Cu2O powders showed higher photocatalytic activity than a commercially available Cu2O powder. The suspension containing electrodeposited Cu2O with a strong [1 1 1] orientation gave a larger amount of H2 evolution than that containing Cu2O with a [1 1 0] orientation. Appropriate crystalline-texture tuning, as well as charge delocalization promotion, is looked to as the key issue for efficient H2 generation from water reduction over p-type Cu2O photocatalysts.

AB - Different p-type Cu2O powders were prepared from electrodeposition and subjected to analysis of their photocatalytic activity in water reduction. The electrodeposited Cu2O powders were obtained by scraping the deposited films off the substrate. Under illumination the Cu2O powders alone were not able to catalyze H2 generation from water reduction. However, these Cu2O powders exhibited photocatalytic activity in H2 generation when they were coupled with n-type WO3 in suspensions. The coupling was made to avoid back reactions of the photo-induced charges. The electrodeposited Cu2O powders showed higher photocatalytic activity than a commercially available Cu2O powder. The suspension containing electrodeposited Cu2O with a strong [1 1 1] orientation gave a larger amount of H2 evolution than that containing Cu2O with a [1 1 0] orientation. Appropriate crystalline-texture tuning, as well as charge delocalization promotion, is looked to as the key issue for efficient H2 generation from water reduction over p-type Cu2O photocatalysts.

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