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Unveiling the role of Ag-Sb bimetallic S-scheme heterojunction for vis-NIR-light driven selective photoreduction CO2 to CH4

Zhang, Zhenzong ; Liu, Xiaohong ; Yuanling, Li ; Yu, Han LU ; Li, Wenjie and Yu, Hongbing (2022) In Applied Catalysis B: Environmental 319.
Abstract

The construction of interfacial engineered heterojunctions is an effective strategy to broaden the optical response and facilitate charge separation. Herein, a novel 0D/1D Ag2S/Sb2S3 heterojunction is prepared by in-situ growth of Ag2S quantum dots on Sb2S3 nanorods using a simple hydrothermal approach. The 10% Ag2S/Sb2S3 (10AS) heterojunction exhibited efficient CO2 photoreduction activity with a CH4 yield of 6.75 µmol g−1 h−1, which is six times higher than that of pure Sb2S3 NTs. The CH4 selectivity of the 10AS heterojunction reach 96.1%, owing to the... (More)

The construction of interfacial engineered heterojunctions is an effective strategy to broaden the optical response and facilitate charge separation. Herein, a novel 0D/1D Ag2S/Sb2S3 heterojunction is prepared by in-situ growth of Ag2S quantum dots on Sb2S3 nanorods using a simple hydrothermal approach. The 10% Ag2S/Sb2S3 (10AS) heterojunction exhibited efficient CO2 photoreduction activity with a CH4 yield of 6.75 µmol g−1 h−1, which is six times higher than that of pure Sb2S3 NTs. The CH4 selectivity of the 10AS heterojunction reach 96.1%, owing to the construction of dual-metal sites. Intriguingly, the composite photocatalyst could be extended to infrared light, leading to the full utilization of the incident light. In the 10AS heterojunction, the formation of Ag-S-Sb type covalent bonds is demonstrated by Raman and XAFS tests. The pathways of CO2 conversion to CH4 are discussed in detail. Therefore, the work provides a promising strategy for highly selective and efficient CO2 photoreduction.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Antimony sulfide, Bimetallic sites, CO2 reduction, Photocatalysis, S-scheme heterojunction
in
Applied Catalysis B: Environmental
volume
319
article number
121960
publisher
Elsevier
external identifiers
  • scopus:85138822928
ISSN
0926-3373
DOI
10.1016/j.apcatb.2022.121960
language
English
LU publication?
yes
id
3da7ef63-bb6d-4b65-ae0c-91fe2fe1f651
date added to LUP
2022-12-05 16:40:24
date last changed
2022-12-05 16:40:24
@article{3da7ef63-bb6d-4b65-ae0c-91fe2fe1f651,
  abstract     = {{<p>The construction of interfacial engineered heterojunctions is an effective strategy to broaden the optical response and facilitate charge separation. Herein, a novel 0D/1D Ag<sub>2</sub>S/Sb<sub>2</sub>S<sub>3</sub> heterojunction is prepared by in-situ growth of Ag<sub>2</sub>S quantum dots on Sb<sub>2</sub>S<sub>3</sub> nanorods using a simple hydrothermal approach. The 10% Ag<sub>2</sub>S/Sb<sub>2</sub>S<sub>3</sub> (10AS) heterojunction exhibited efficient CO<sub>2</sub> photoreduction activity with a CH<sub>4</sub> yield of 6.75 µmol g<sup>−1</sup> h<sup>−1</sup>, which is six times higher than that of pure Sb<sub>2</sub>S<sub>3</sub> NTs. The CH<sub>4</sub> selectivity of the 10AS heterojunction reach 96.1%, owing to the construction of dual-metal sites. Intriguingly, the composite photocatalyst could be extended to infrared light, leading to the full utilization of the incident light. In the 10AS heterojunction, the formation of Ag-S-Sb type covalent bonds is demonstrated by Raman and XAFS tests. The pathways of CO<sub>2</sub> conversion to CH<sub>4</sub> are discussed in detail. Therefore, the work provides a promising strategy for highly selective and efficient CO<sub>2</sub> photoreduction.</p>}},
  author       = {{Zhang, Zhenzong and Liu, Xiaohong and Yuanling, Li and Yu, Han and Li, Wenjie and Yu, Hongbing}},
  issn         = {{0926-3373}},
  keywords     = {{Antimony sulfide; Bimetallic sites; CO2 reduction; Photocatalysis; S-scheme heterojunction}},
  language     = {{eng}},
  month        = {{12}},
  publisher    = {{Elsevier}},
  series       = {{Applied Catalysis B: Environmental}},
  title        = {{Unveiling the role of Ag-Sb bimetallic S-scheme heterojunction for vis-NIR-light driven selective photoreduction CO<sub>2</sub> to CH<sub>4</sub>}},
  url          = {{http://dx.doi.org/10.1016/j.apcatb.2022.121960}},
  doi          = {{10.1016/j.apcatb.2022.121960}},
  volume       = {{319}},
  year         = {{2022}},
}