Water‐Tolerant Lead Halide Perovskite Nanocrystals as Efficient Photocatalysts for Visible‐Light‐Driven CO 2 Reduction in Pure Water
| Autor: | Min Zhang, Xiao-Xuan Guo, Yan-Fei Mu, Wen Zhang, Guang-Xing Dong, Tong-Bu Lu |
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| Rok vydání: | 2019 |
| Předmět: |
Aqueous solution
Materials science General Chemical Engineering Doping chemistry.chemical_element Halide 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Artificial photosynthesis General Energy chemistry Chemical engineering Photocatalysis Environmental Chemistry General Materials Science 0210 nano-technology Cobalt Visible spectrum Perovskite (structure) |
| Zdroj: | ChemSusChem. 12:4769-4774 |
| ISSN: | 1864-564X 1864-5631 |
| Popis: | Lead halide perovskite (LHP) nanocrystals have recently been actively investigated for photocatalysis, owing to their inexpensive fabrication and excellent optoelectronic properties. However, LHP nanocrystals have not been used for artificial photosynthesis in aqueous solution, owing to their high sensitivity to water. In this study, water-tolerant cobalt-doped CsPbBr3 /Cs4 PbBr6 nanocrystals have been prepared with the protection of hexafluorobutyl methacrylate. The resultant materials are employed as efficient photocatalysts for visible-light-driven CO2 reduction in pure water. The perovskite nanocrystals with 2 % cobalt doping afford an impressive overall yield of 247 μmol g-1 for photocatalytic CO2 conversion into CO and CH4 , using water as an electron source. This study represents a significant step for practical artificial photosynthesis by using LHP nanocrystals as photocatalysts in aqueous solution. |
| Databáze: | OpenAIRE |
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