TiO2 nanotubes with different anodic oxidation time were prepared by anodic oxidation method,and Cu2O was deposited on the surface of TiO2 nanotubes by electrochemical method.The composite catalyst Cu2O/TiO2 was characterized by FESEM,XRD and XPS.The photoelectric reduction of CO2 by Cu2O/TiO2 composite catalyst at gas-solid interface was studied by using a self-made photoelectricity catalytic reaction device-“double pool and double interface reactor”.The results showed that the catalytic products were CH4 and CO.The highest CH4 content in the catalytic products was 1.678μL.At its peak,CO can reach 11.499μL.The content of CO in the catalytic products was significantly higher than that of CH4,indicating that the prepared composite catalyst Cu2O/TiO2-2 had good selectivity for the generation of CO products.
Zhang Hongzhong, Qian Xuhui, Wang Lan, Song Yali, Zhou Hanghang, Zhang Huan, Zhang Yifei
. Preparation of Cu2O/TiO2 nanotube and photoelectric reduction of CO2 at gas-solid interface[J]. New Chemical Materials, 2020
, 48(12)
: 89
-92
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.12.022
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