Construction of visible light–responsive Z-scheme CdS/BiOI photocatalyst with enhanced photocatalytic CO 2 reduction activity
Abstract Rational construction of Z-scheme photocatalysts and exploration of the Z-scheme charge transfer mechanism have drawn much attention in the field of CO 2 reduction because of its great potential to alleviate energy crisis and environmental problems. In this study, a series of Z-scheme CdS/B...
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Published in | Journal of materials research Vol. 34; no. 23; pp. 3907 - 3917 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
16.12.2019
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Abstract | Abstract
Rational construction of Z-scheme photocatalysts and exploration of the Z-scheme charge transfer mechanism have drawn much attention in the field of CO
2
reduction because of its great potential to alleviate energy crisis and environmental problems. In this study, a series of Z-scheme CdS/BiOI composites were constructed by depositing CdS nanoparticles on the surface of BiOI nanosheets. The synthesized materials were characterized comprehensively, and their photoreduction CO
2
activities were evaluated. The results show that the composites exhibit higher photoreduction CO
2
activity under visible light irradiation (λ > 400 nm) than pure CdS and BiOI. The yields of CO and CH
4
for the optimal composite after 3 h irradiation are 3.32 and 0.54 μmol/g, respectively. The improved photocatalytic activity is attributed to Z-scheme transfer mode of the photogenerated charges in the composites. The mechanism of CO
2
reduction is proposed and verified experimentally. |
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AbstractList | Abstract
Rational construction of Z-scheme photocatalysts and exploration of the Z-scheme charge transfer mechanism have drawn much attention in the field of CO
2
reduction because of its great potential to alleviate energy crisis and environmental problems. In this study, a series of Z-scheme CdS/BiOI composites were constructed by depositing CdS nanoparticles on the surface of BiOI nanosheets. The synthesized materials were characterized comprehensively, and their photoreduction CO
2
activities were evaluated. The results show that the composites exhibit higher photoreduction CO
2
activity under visible light irradiation (λ > 400 nm) than pure CdS and BiOI. The yields of CO and CH
4
for the optimal composite after 3 h irradiation are 3.32 and 0.54 μmol/g, respectively. The improved photocatalytic activity is attributed to Z-scheme transfer mode of the photogenerated charges in the composites. The mechanism of CO
2
reduction is proposed and verified experimentally. |
Author | Yao, Hong-Chang Zhou, Rong-Hui Wei, Zhi-He Li, Yan-Yang Li, Zhong-Jun |
Author_xml | – sequence: 1 givenname: Rong-Hui surname: Zhou fullname: Zhou, Rong-Hui – sequence: 2 givenname: Zhi-He surname: Wei fullname: Wei, Zhi-He – sequence: 3 givenname: Yan-Yang surname: Li fullname: Li, Yan-Yang – sequence: 4 givenname: Zhong-Jun surname: Li fullname: Li, Zhong-Jun – sequence: 5 givenname: Hong-Chang orcidid: 0000-0002-6510-0286 surname: Yao fullname: Yao, Hong-Chang |
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Rational construction of Z-scheme photocatalysts and exploration of the Z-scheme charge transfer mechanism have drawn much attention in the field of... |
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Title | Construction of visible light–responsive Z-scheme CdS/BiOI photocatalyst with enhanced photocatalytic CO 2 reduction activity |
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