硝酸盐
污染物
化学
氮气
光催化
化学工程
催化作用
镍
介孔材料
有机化学
工程类
作者
Shuangjun Li,Hai Shang,Ying Tao,Pengpeng Li,Honghui Pan,Qing Wang,Zongshu Shao,Hongbao Jia,Haonan Zhang,Jiazhen Cao,Bixiang Zhang,Rui Zhang,Guisheng Li,Yanrong Zhang,Guisheng Li,Hexing Li
标识
DOI:10.1002/ange.202305538
摘要
Abstract The selective conversion of dilute NO pollutant into low‐toxic product and simultaneous storage of metabolic nitrogen for crop plants remains a great challenge from the perspective of waste management and sustainable chemistry. This study demonstrates that this bottleneck can be well tackled by refining the reactive oxygen species (ROS) on Ni‐modified NH 2 ‐UiO‐66(Zr) (Ni@NU) using nickel foam (NF) as a three‐dimensional (3D) substrate through a flow photoanode reactor via the gas‐phase photoelectrocatalysis. By rationally refining the ROS to ⋅OH, Ni@NU/NF can rapidly eliminate 82 % of NO without releasing remarkable NO 2 under a low bias voltage (0.3 V) and visible light irradiation. The abundant mesoporous pores on Ni@NU/NF are conducive to the diffusion and storage of the formed nitrate, which enables the progressive conversion NO into nitrate with selectivity over 99 % for long‐term use. Through calculation, 90 % of NO could be recovered as the nitrate species, indicating that this state‐of‐the‐art strategy can capture, enrich and recycle the pollutant N source from the atmosphere. This study offers a new perspective of NO pollutant treatment and sustainable nitrogen exploitation, which may possess great potential to the development of highly efficient air purification systems for industrial and indoor NO x control.
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