过电位
石墨氮化碳
材料科学
氮化物
法拉第效率
催化作用
化学工程
纳米晶
可逆氢电极
电解
氮化碳
还原剂
碳纤维
纳米技术
合理设计
二氧化碳电化学还原
电极
化学
电化学
光催化
复合数
一氧化碳
物理化学
有机化学
复合材料
图层(电子)
参比电极
工程类
电解质
作者
Liang Ma,Xiaoyan Cai,Zhiqiang Liang,Shun Lu,Pengxuan Wu,Songbai Qiu,Qian Zhang,Tiejun Wang
标识
DOI:10.1021/acs.iecr.3c03841
摘要
In this work, a facile method to tune the carbon dioxide (CO2) reduction reaction (CRR) activities of graphitic carbon nitride (GCN) was developed via the capping-agent-free involvement of a trace amount of Ag nanocrystals with a decreased size. After the optimization of experimental conditions, the CRR performance investigation confirms that Ag-GCN-0.2 exhibited a superior CRR performance, achieving a faradaic efficiency (FE) of more than 72 ± 1% for CO in a wide potential range from −0.6 to −1.1 V (vs reversible hydrogen electrode (RHE)) and a max FE of 89 ± 1% at an overpotential of 0.9 V with a constant current density and a well-maintained microstructure even after 12 h of electrolysis. This work provides a new route to tune the catalytical performance of GCN and pave the way for the rational design, synthesis, and accurate estimation of the GCN-based catalysts, which will be synthesized on a large scale and utilized in industries.
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