期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 616, 期 -, 页码 649-658出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2022.02.109
关键词
Au; Product selectivity; Ethane
资金
- National Natural Science Foundation of China [21878134, 21676128]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX19_1627]
This study designed and tested gold nanoparticle-modified bismuth-rich bismuth oxybromide Bi12O17Br2 nanotube composites, which achieved efficient separation and migration of carriers to convert CO2 into high value-added hydrocarbon products, demonstrating the potential of photocatalytic reduction of CO2.
The photocatalytic reduction of carbon dioxide (CO2) to fossil fuels has attracted widespread attention. However, obtaining the high value-added hydrocarbons, especially C2+ products, remains a considerable challenge. Herein, gold (Au) nanoparticle-modified bismuth-rich bismuth oxybromide Bi12O17Br2 nanotube composites were designed and tested. Au nanoparticles act as electron traps and thermal electron donors that promote the efficient separation and migration of carriers to form the C2+ product. As a result, compared with the pure Bi12O17Br2 nanotubes, Au@Bi12O17Br2 composites can not only produce the carbon monoxide (CO) and methane (CH4), but also covert CO2 into ethane (C2H6). In this study, Au@Bi12O17Br2-700 was used to obtain a C2H6 production rate of 29.26 lmol h-1 g-1. The selectivities during a 5-hour test reached 94.86% for hydrocarbons and 90.81% for C2H6. The proposed approach could be used to design high-performance photocatalysts to convert CO2 into high value-added hydrocarbon products.
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