Article ; Online: Constructing CoAl-LDO/MoO3-x S-scheme heterojunctions for enhanced photocatalytic CO2 reduction
Journal of Colloid And Interface Science. 2023 July 12,
2023
Abstract: ... scheme (S-scheme) heterojunctions could simultaneously optimize the migration mechanism of photogenerated ...
Abstract | Converting CO₂ into chemicals and fuels by solar energy can alleviate global warming and solve the energy crisis. In this work, CoAl-LDO/MoO₃₋ₓ (LDO/MO) composites were successfully prepared and achieved efficient CO₂ reduction under visible light. The CoAl-layered double oxides (CoAl-LDO) evolved from CoAl-layered double hydroxide (CoAl-LDH) exhibited a more robust structure, broader light absorption, and improved CO₂ adsorption ability. The local surface plasmon resonance (LSPR) effect excited by nonstoichiometric MoO₃₋ₓ broadened the photo-response range of CoAl-LDO/MoO₃₋ₓ. In addition, constructing step-scheme (S-scheme) heterojunctions could simultaneously optimize the migration mechanism of photogenerated electrons and holes, and retain carriers with strong redox ability. Therefore, the production rates of CO and CH₄ on the optimal LDO/MO composite were 7 and 9 times higher than the pristine CoAl-LDH, respectively. This work hybridizes oxidation photocatalysts and LDO-based materials to optimize the charge separation and migration mechanisms, which guides the modification of LDO-based materials. |
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Keywords | absorption ; adsorption ; carbon dioxide ; energy ; light ; oxidation ; photocatalysis ; photocatalysts ; solar energy ; surface plasmon resonance ; CO2 ; photocatalytic reduction ; CoAl-LDO/MoO3-x ; S-scheme heterojunction ; LSPR effect |
Language | English |
Dates of publication | 2023-0712 |
Size | p. 983-993. |
Publishing place | Elsevier Inc. |
Document type | Article ; Online |
Note | Pre-press version |
ZDB-ID | 241597-5 |
ISSN | 1095-7103 ; 0021-9797 |
ISSN (online) | 1095-7103 |
ISSN | 0021-9797 |
DOI | 10.1016/j.jcis.2023.07.068 |
Database | NAL-Catalogue (AGRICOLA) |
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