文献类型：期刊文献

英文题名：High-efficient degradation of sulfadiazine by a novel boron-induced Fe/CaO2 system

作者：Zhang, Yuting[1];Guo, Jiayi[1];Zou, Xiaoming[2];Hossain, Md Faysal[3];Luo, Xubiao[2];Zhou, Yanbo[1,2,4]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[2]Jinggangshan Univ, Sch Life Sci, Key Lab Jiangxi Prov Funct Biol & Pollut Control R, Jian 343009, Peoples R China;[3]Univ Oulu, Fibre & Particle Engn Res Unit, Erkki Koiso Kanttilan Katu, Oulu 90014, Finland;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2025

卷号：504

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20250117622128);WOS:【SCI-EXPANDED(收录号:WOS:001412083400001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 52370168) , the Key Laboratory of Functional Biology and Pollution Control in red soil regions of Jiangxi Province (Grant No. 2023SSY02051) .

语种：英文

外文关键词：Fenton-like systems; Boron; Electron transfer; Reactive oxygen species

摘要：Adding cocatalyst is a common strategy to increase the rate and degree of Fenton reaction. Inorganic cocatalyst has the ability to provide electrons, reduce the risk of secondary pollution, and effectively improve the utilization efficiency of ROS. However, how inorganic cocatalyst boron improves the utilization efficiency of ROS needs to be further explored. This study investigated the enhancement of sulfadiazine (SDZ) degradation in a Fe(II)/CaO2 system by incorporating boron as inorganic cocatalyst. The results demonstrated that the Boron/Fe(II)/CaO2- system achieved 96.1 % SDZ removal efficiency within 10 min, compared to only 69.2 % for the Fe(II)/CaO2 system. Boron accelerated the Fe(II) to Fe(III) cycle, maintaining a roughly 1:1 ratio, and increased the concentration of reactive oxygen species (& sdot;OH, 1O2, and & sdot;O2-, FeIV=O) in the system. Active sites of SDZ vulnerable to free radical attack have been analyzed using frontier orbital density function, and the degradation paths of SDZ produced by Boron/Fe(II)/CaO2 system has been verified. The incorporation of boron notably enhanced the degradation capacity of the Fe(II)/CaO2 system for SDZ and other organics. This enhancement was particularly pronounced in real river water, which is rich in natural organic matter, with the degradation rate constant being increased by a factor of 6.5.