氨
硝酸盐
光伏系统
氨生产
材料科学
太阳能电池
太阳能
选择性
产量(工程)
化学
光电子学
催化作用
有机化学
电气工程
冶金
工程类
作者
Paulraj Gnanasekar,Karthik Peramaiah,Huafan Zhang,Ibrahim G. Alsayoud,Anand S. Subbiah,Maxime Babics,Tien Khee Ng,Qiaoqiang Gan,Stefaan De Wolf,Kuo‐Wei Huang,Boon S. Ooi
出处
期刊:Small
[Wiley]
日期:2024-07-02
被引量:1
标识
DOI:10.1002/smll.202404249
摘要
Abstract The photoelectrochemical (PEC) method has the potential to be an attractive route for converting and storing solar energy as chemical bonds. In this study, a maximum NH 3 production yield of 1.01 g L −1 with a solar‐to‐ammonia conversion efficiency of 8.17% through the photovoltaic electrocatalytic (PV‐EC) nitrate (NO 3 − ) reduction reaction (NO 3 − RR) is achieved, using silicon heterojunction solar cell technology. Additionally, the effect of tuning the operation potential of the PV‐EC system and its influence on product selectivity are systematically investigated. By using this unique external resistance tuning approach in the PV‐EC system, ammonia production through nitrate reduction performance from 96 to 360 mg L −1 is enhanced, a four‐fold increase. Furthermore, the NH 3 is extracted as NH 4 Cl powder using acid stripping, which is essential for storing chemical energy. This work demonstrates the possibility of tuning product selectivity in PV‐EC systems, with prospects toward pilot scale on value‐added product synthesis.
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