Surface-adsorbed ions on TiO2 nanosheets for selective photocatalytic CO2 reduction
two-dimensional nanomaterials, surface modification, ion adsorption, photocatalysis, TiO2 nanosheets
ABSTRACT A method based on the adsorption of ions on the surface of two-dimensional (2D) nanosheets has been developed for photocatalytic CO2 reduction. Isolated Bi ions, confined on the surface of TiO2 nanosheets using a simple ionic adsorption method facilitate the formation of a built-in electric field that effectively promotes charge carrier separation. This leads to an improved performance of the photocatalytic CO2 reduction process with the preferred conversion to CH4. The proposed surface ion-adsorption method is expected to provide an effective approach for the design of highly efficient photocatalytic systems. These findings could be very valuable in photocatalytic CO2 reduction applications.
Tsinghua University Press
Xiaogang Li,Wentuan Bi,Zhe Wang,Wenguang Zhu,Wangsheng Chu,Changzheng Wu,Yi Xie, Surface-adsorbed ions on TiO2 nanosheets for selective photocatalytic CO2 reduction. NanoRes.2018, 11(6): 3362–3370