光催化
氮气
固氮
化学
盐(化学)
固定(群体遗传学)
氨
金属
可见光谱
光化学
熔盐
催化作用
无机化学
化学工程
材料科学
有机化学
工程类
基因
生物化学
光电子学
作者
Yi Kong,Chade Lv,Congmin Zhang,Gang Chen
标识
DOI:10.1016/j.apsusc.2020.146009
摘要
Photocatalytic nitrogen fixation is one of the most green and sustainable methods for NH3 production under ambient conditions. Exploration of high-efficiency photocatalysts paves the way for realizing ammonia synthesis under ambient conditions. In this study, through the molten salt method retreatment approach, we design a cyano group modified g-C3N4 (CG-CN), which enables high-efficiency visible-light-driven nitrogen fixation in the absence of any organic scavengers and precious-metal cocatalysts. The cyano group (CN) can promote the separation of photogenerated electron-hole pairs and simultaneously induce the nitrogen activation based on the strong electron-withdrawing character. The introduction of the cyano group results in a 12.8 times improved photocatalytic nitrogen fixation activity in sharp contrast to that of pristine g-C3N4 (CN). This work provides a feasible route to modify photocatalysts with functional surface group for nitrogen fixation.
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