Multimetal tantalate CsBi2Ta5O16 for photocatalytic conversion of CO2 with H2O into CH4 and O2.
- Resource Type
- Article
- Authors
- Ni, Mengmeng; Wang, Lihong; Chai, Yao; Wang, Bing; Li, Dongmiao; Shen, Jinni; Zhang, Zizhong; Wang, Xuxu
- Source
- Applied Surface Science. Jun2022, Vol. 588, pN.PAG-N.PAG. 1p.
- Subject
- *PYROCHLORE
*CARBON dioxide
*METHANE
*CHARGE carriers
*FUSED salts
*WORK design
- Language
- ISSN
- 0169-4332
[Display omitted] • CsBi 2 Ta 5 O 16 is firstly reported to be a span-new photocatalyst. • CsBi 2 Ta 5 O 16 is prepared by a simple high-temperature molten salt method. • The prepared CsBi 2 Ta 5 O 16 has an octahedral mophology. • NiO-loaded CsBi 2 Ta 5 O 16 efficiently drives CO 2 reduction and H 2 O oxidation. • NiO improves the charge carrier separation and also CO 2 adsorption and activation. The photocatalytic conversion of CO 2 and H 2 O into a series of value-added products is regarded as an important way to mimic natural photosynthesis for solar harvesting. Herein, we prepared CsBi 2 Ta 5 O 16 with a cubic pyrochlore structure via high-temperature molten salt method as a photocatalyst for the first time. The NiO-loaded CsBi 2 Ta 5 O 16 composites could efficiently photocatalyze the conversion of CO 2 into CH 4 and CO, and oxidize H 2 O to O 2. With 10 wt% NiO loading, the highest yield of CH 4 (7.24 μmol g−1h−1) and O 2 (3.59 μmol g−1h−1) could be achieved. The adsorption and activation of CO 2 molecule on NiO can be attributed to the enhanced CO 2 photocatalytic conversion by the NiO-loaded CsBi 2 Ta 5 O 16 composites. This work provides a design idea of photocatalyst for the full reaction of CO 2 with H 2 O. [ABSTRACT FROM AUTHOR]