1. Efficient Electron Transfer in g-C 3 N 4 /TiO 2 Heterojunction for Enhanced Photocatalytic CO 2 Reduction.
- Author
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Jiang, Peng, Yu, Yang, Wang, Kun, and Liu, Wenrui
- Subjects
CHARGE carriers ,CHARGE exchange ,CARBON dioxide ,HETEROJUNCTIONS ,PHOTOREDUCTION ,FOURIER transform infrared spectroscopy ,X-ray photoelectron spectroscopy - Abstract
Excessive emissions of carbon dioxide have led to the greenhouse effect and global warming. Reducing carbon dioxide into high-value-added chemicals through solar energy is a promising approach. Herein, a g-C
3 N4 /TiO2 heterojunction photocatalyst with efficient electron transfer is designed for photocatalytic CO2 reduction. The CH4 (18.32 µmol·h−1 ·g−1 ) and CO (25.35 µmol·h−1 ·g−1 ) evolution rates of g-C3 N4 /TiO2 are higher than those of g-C3 N4 and TiO2 . The enhanced photocatalytic CO2 reduction performance is attributed to the efficient charge carrier transfer in the g-C3 N4 /TiO2 heterojunction. The electron transfer route was verified by in situ irradiated X-ray photoelectron spectroscopy (XPS). The photocatalytic CO2 reduction mechanism on g-C3 N4 /TiO2 was investigated by in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). This work provides a strategy for designing a polymer/metallic oxide heterojunction with efficient electron transfer for enhanced photocatalytic CO2 reduction. [ABSTRACT FROM AUTHOR]- Published
- 2024
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