Selective ammonia production via nitrite electroreduction over CoFe layered double hydroxides-decorated 3D TiO_(2) array  

作　　者：Yi Liang Xiaoya Fan Xun He Dongdong Zheng Shengjun Sun Yongsong Luo Hao Chen Xuping Sun 

机构地区：[1]College of Materials and Chemistry&Chemical Engineering,Chengdu University of Technology,Chengdu 610059,China [2]Center for High Altitude Medicine,West China Hospital,Sichuan University,Chengdu 610041,China [3]Department of Laboratory Medicine,West China Hospital,Sichuan University,Chengdu 610041,China [4]College of Chemistry,Chemical Engineering and Materials Science,Shandong Normal University,Jinan 250014,China

出　　处：《Nano Research》2025年第4期169-177,共9页纳米研究(英文版)

基　　金：supported by the Sichuan Province Youth Fund Project(No.2025ZNSFSC0897).

摘　　要：Water-soluble nitrite(NO_(2)^(-))in wastewater from agricultural and industrial activities poses ecological and health risks,and its electroreduction shows promise for ammonia(NH3)production,but energy losses from the hydrogen evolution reaction(HER)limit its overall efficiency.In this work,we report the use of CoFe-layered double hydroxides on three-dimensional(3D)TiO_(2) array(TiO_(2)@CoFe-LDH)as an effective electrocatalyst for NO_(2)-reduction.By offering superior *H species supply and hydroprocessing capability,this catalyst achieves an NH_(3) yield of 1056.4μmol·h^(-1)·cm^(-2) with a 97.4% Faradaic efficiency(FE)at-0.6 V and sustains FE above 87% across a range of applied potentials.Additionally,a 60-h simulated wastewater treatment experiment demonstrates its practical application potential.

关 键 词：CoFe-layered double hydroxides(CoFe-LDH) TiO_(2)array electrochemical of NO_(2)-reduction wastewater treatment NH_(3)production 

分 类 号：O643.36[理学—物理化学]