首页|Localized CdS homojunctions with optimal ratio of high and low index facets to dynamically boost H2O splitting into H2 energy

Localized CdS homojunctions with optimal ratio of high and low index facets to dynamically boost H2O splitting into H2 energy

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Localized CdS homojunctions with optimal ratio of high and low index facets are constructed to dy-namically boost H2O splitting into H2 energy by hydrothermal method in combination with calcination.By density functional theory,hall effect,and in situ diffuse reflectance infrared Fourier transform spec-troscopy,it is revealed that photo-irradiated e-and h+can be spatially separated and directionally trans-ferred to the reductive high-index facet ｛002} and oxidative low-index facet {110} of localized CdS homo-junction induced by Fermi level difference of both high and low index facets to dehydrogenate*-OH and coupled*-O intermediates for H2 and O2 yield,respectively,along with a solar conversion into hydrogen of 1.93％by AM 1.5 G irradiation at 65 ℃.The study work suggests a scientific perspective on the optimal ratio of high and low index facets to understand photo-generated charge carrier transfer dynamically and their photocatalytic principle for H2O splitting reaction in kinetics.

Photocatalytic H2 evolutionHomojunctionLocalized fieldRatio of high low index facetsIn-situ DRIFTS

Xiaojun Wang、Yiqi Zhang、Shujuan Jiang、Jiakun Su、Shaoqing Song

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School of Materials Science & Chemical Engineering,Ningbo University,Ningbo 330013,China

Tchnology Center,China Tobacco Jiangxi Industrial LLC,Nanchang 330096,China

School of New Energy,Ningbo University of Technology,Ningbo 315336,China

National Natural Science Foundation of ChinaNatural Science Foundation of Ningbo CityNingbo University,Fan 3315 Plan,and Yongjiang Scholar Project

519721772021J067SJLY2021010

2024

10.1016/j.jmst.2023.06.041

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.171(4)
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