Unveiling the role of Ag-Sb bimetallic S-scheme heterojunction for vis-NIR-light driven selective photoreduction CO2 to CH4
(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.
(Less)
- author
- Zhang, Zhenzong ; Liu, Xiaohong ; Yuanling, Li ; Yu, Han LU ; Li, Wenjie and Yu, Hongbing
- organization
- publishing date
- 2022-12-15
- 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}}, }