Efficient and selective photocatalytic nitrite reduction to N_(2)through CO_(2)anion radical by eco-friendly tartaric acid activation

作     者：Jingtai Bi Yupeng Cheng Mengmeng Sun Xiaofu Guo Shizhao Wang Yingying Zhao Jingtai Bi;Yupeng Cheng;Mengmeng Sun;Xiaofu Guo;Shizhao Wang;Yingying Zhao

作者机构：Engineering Research Center of Seawater Utilization of Ministry of EducationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin 300401China Hebei Collaborative Innovation Center of Modern Marine Chemical TechnologyTianjin 300401China Tianjin Key Laboratory of Chemical Process SafetyTianjin 300130China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2024年第35卷第11期

页      面：249-253页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：financially supported by National Natural Science Foundation of China(No.22208081) Central Guidance on Local Science and Technology Development Fund of Hebei Province(No.226Z3102G) Fundamental Research Funds of Hebei University of Technology(No.JBKYTD2001) 

主　　题：Nitrite Advanced reduction processes Photocatalysis CO_(2)anion radicals Tartaric acid 

摘      要：In this study,the environmentally friendly precursor,tartaric acid(TA),was employed for the generation of CO_(2)anion radical(CO_(2)^(·-))in an advanced UV/TA/Fe^(3+)system to reduce the hazardous NO_(2)^(-)-N in *** optimize this process,various factors,including the dosage of Fe^(3+),TA,and p H,were systematically investigated for their impact on the reduction *** the conditions of 3 mmol/L Fe^(3+)dosage,10 mmol/L TA dosage,and a pH of 2.5,NO_(2)^(-)-N was effectively removed from the water within 60 min,selectively transformed into N_(2),with a remarkable N_(2)selectivity of 91.2%.In the optimal conditions,the NO_(2)^(-)-N reduction mechanism in the UV/TA/Fe^(3+)system and the critical role of CO_(2)^(·-)were ***,this study explored the reduction of real nitrified seawater using the UV/TA/Fe^(3+)*** results demonstrated that the UV/TA/Fe^(3+)system could completely eliminate NO_(2)^(-)-N and achieve a N_(2)selectivity of up to 90%,with minimal interference from coexisting *** work holds promising implications for the environmentally benign treatment of nitrite-polluted wastewater.