期刊
MATERIALS RESEARCH BULLETIN
卷 122, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2019.110676
关键词
g-C3N4 nanosheet; Prolong charge lifetime; Catalytic function; CO2 reduction; 2,4-DCP degradation
资金
- NSFC [U1805255, IRT1237]
Graphitic carbon nitride (g-C3N4) usually exhibits weak photocatalytic activity for CO2 reduction and pollutant degradation. Herein, the visible-light activities of g-C3N4 nanosheets are successfully improved by co-modifying SnO2 and Ag, with similar to 10-time and similar to 8-time improvement respectively for CO2 conversion and 2,4-dichlorophenol (2,4-DCP) degradation as compared to the pure g-C3N4 . Mainly based on the transient-state surface photovoltage responses, transient-state photoluminescence spectra and electrochemical analyses, it is confirmed that the improved photoactivities are attributed to the synergistic effect of the prolonged charge lifetime and the provided catalytic function by modifying SnO2 and Ag, respectively. In addition, the synergistic effect is also feasible by replacing Ag with Au. This work will provide an effective strategy for designing high-activity g-C3N4 based photocatalysts.
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