Improved visible-light activities of g-C3N4 nanosheets by co-modifying nano-sized SnO2 and Ag for CO2 reduction and 2,4-dichlorophenol degradation

被引：42

作者：

Ali, Wajid ^{[1
]}

Zhang, Xuliang ^{[1
]}

Zhang, Xinxin ^{[1
]}

Ali, Sharafat ^{[1
]}

Zhao, Lina ^{[1
]}

Shaheen, Shabana ^{[1
]}

Jing, Liqiang ^{[1
]}

机构：

[1] Heilongjiang Univ, Int Joint Res Ctr, Sch Chem & Mat Sci, Key Lab Funct Inorgan Mat Chem,Minist Educ, Harbin 150080, Heilongjiang, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2020年 / 122卷

关键词：

g-C3N4; nanosheet; Prolong charge lifetime; Catalytic function; CO2; reduction; 2,4-DCP degradation; GRAPHITIC CARBON NITRIDE; ENHANCED PHOTOCATALYTIC ACTIVITIES; POROUS G-C3N4; H-2; PRODUCTION; CONVERSION; METAL; NANOCOMPOSITES; COCATALYST; CATALYST; SILVER;

D O I：

10.1016/j.materresbull.2019.110676

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：7

共 53 条

[1] Effect of calcination temperature on the photoactivities of ZnO/SnO2 nanocomposites for the degradation of methyl orange [J].