摘要
由于实际水体成分的复杂性,以强活性自由基反应为主导机制的传统光化学高级氧化/还原技术普遍存在光子利用率低、底物选择性差等问题.近年来,基于低分子量双酮的新型光化学氧化/还原技术因具有良好的反应选择性和抗共存基质干扰能力而渐受关注.本文总结了双酮在水相中的光化学研究进展,重点评述了烯醇式双酮在光化学体系中对电子和能量转移的调控作用,初步揭示了紫外/双酮法转化污染物的特点以及其在水污染控制中的应用潜力.进而通过分析目前研究中存在的问题,对今后的研究方向和趋势进行了展望.
The practical application of most of the UV-based advanced oxidation/reduction technologies(AOTs)is still limited because of the poor selectivity of the reactive species in the UV-based AOTs and the inner filter effects caused by the complicated components in water.Recently,new photochemical techniques based on low molecular weight diketones have attracted much attention because of the higher selectivity and the stronger anti-interference ability.This review summarizes the current research progress on diketone-mediated photochemical processes,with the emphasis on the role of the enol tautomer in the electron/energy transfer.The characteristics of UV/diketone and its potential applications in water pollution control are preliminarily discussed.Moreover,the remaining questions in the current research on UV/diketones are analyzed,and the future research directions are proposed.
作者
张国洋
吴兵党
张淑娟
潘丙才
Guoyang Zhang;Bingdang Wu;Shujuan Zhang;Bingcai Pan(State Key Laboratory of Pollution Control and Resource Reuse,School of the Environment,Nanjing University,Nanjing 210023)
出处
《中国科学：化学》
CAS
CSCD
北大核心
2021年第8期1060-1074,共15页
SCIENTIA SINICA Chimica
基金
国家自然科学基金(编号:21906078、21677070)
江苏省自然科学基金(编号:BK20190322)资助项目。
关键词
电子转移
配位
光化学
高级氧化/还原
双酮
electron transfer
complexation
photochemistry
advanced oxidation/reduction
diketone
作者简介
通讯作者:张淑娟,E-mail:sjzhang@nju.edu.cn。
