期刊
ACS CATALYSIS
卷 9, 期 9, 页码 8659-8668出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.9b02553
关键词
Cu-BDC nanosheet; macroporous-mesoporous-TiO2; CO2; carboxylation; ultraviolet light
资金
- Beijing Natural Science Foundation [2182061]
- Science Foundation of China University of Petroleum, Beijing [2462019BJRC001]
- National Natural Science Foundation of China [21503130]
- Young Eastern Scholar Program of the Shanghai Municipal Education Commission [QD2016021]
- Shanghai Key Laboratory of High Temperature Superconductors [14DZ2260700]
Growing greenhouse gas CO2 is driving the research on the chemical fixation of CO2. Here, the organic reaction of CO2 with benzyl halogen for chemical CO2 fixation under ambient conditions with irradiation of ultraviolet light is successfully catalyzed by Cu-BDC nanosheet@macroporous-mesoporous-TiO2 (Cu-BDC@macro-meso-TiO2), which shows high photocatalytic activity for both benzyl chloride and bromide reacting with CO2. Meanwhile, the prepared Cu-BDC@macro-meso-TiO2 possesses a three-scale porous structure, including macropores, mesopores, and micropores. In the uniform hierarchical structure, the microporous Cu-BDC nanosheet is confined in the macropore of macroporous-mesoporous-TiO2, while the ordered mesoporous structure is in the macroporous walls. This multilevel porous distribution can significantly improve the active surface areas and mass transfer efficiency of Cu-BDC@macro-meso-TiO2. Therefore, this finding has opened a field of research on photocatalytic chemical CO2 fixation.
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