氮硫共掺杂生物质铁炭材料活化PMS降解双酚A研究  

N,S Co-doped Iron-Biochar Material as Peroxymonosulfate Activator for BPA Degradation

作　　者：张媛媛 李欣 曲红拥 张升晓[2] ZHANG Yuanyuan;LI Xin;QU Hongyong;ZHANG Shengxiao(Ecological Environment Monitoring Center,Yantai,Shandong Province,264000;School of Chemistry and Materials Science,Ludong University,264025,Yantai,China)

机构地区：[1]山东省烟台生态环境监测中心,264000 [2]鲁东大学化学与材料科学学院,山东烟台264025

出　　处：《水处理技术》2023年第10期57-63,共7页Technology of Water Treatment

基　　金：烟台市科技创新发展计划(2022XDRH009);烟台市科技创新发展计划战略研究类项目(2023YTZLYJ06000942)。

摘　　要：以硫脲、樱桃核粉末和无水三氯化铁为原料,通过一锅煅烧法制备出氮硫共掺杂的生物质铁炭材料(Fe/NS-BC)。该材料能有效活化PMS,在0.1 g/L Fe/NS_(0.03)-BC和0.5 g/L PMS存在的条件下,20 mg/L的双酚A在30 min时被完全去除。自由基猝灭实验证明Fe/NS_(0.03)-BC/PMS体系中存在SO_(4)^(•−)、•OH和1O_(2)三种活性氧物种。碳基体中掺杂的氮、硫和铁之间的协同作用是Fe/NS-BC能高效活化PMS降解有机物的主要原因。Fe/NS-BC具有合成方法简单、成本低廉、环境友好等优点,在有机污染物的降解方面具有良好的应用前景。N,S co-doped iron-biochar materials(Fe/NS-BC)was synthesized via a one-pot calcination method with anhydrous FeCl_(3),thiourea,and cherry stone powder as precursors.The Fe/NS_(0.03)-BC exhibited significant activities toward PMS activation,and 20 mg/L BPA can be degraded completely in 30 min with 0.1 g/L of the material and 0.5 g/L PMS.Free radical quenching experiments indicated that 1O_(2),SO_(4)^(•−)and•OH were the main reactive oxidizing species in the degradation of the pollutants.Control experiments revealed that the enhanced active sites were mainly ascribed to the synergistic effect among Fe and N,S co-doping into carbon substrate.The Fe/NS_(0.03)-BC owned the merits of easy synthesis,cheap raw materials,and environmentally friendly,exhibiting splendid prospects for organic pollutants degradation.

关 键 词：生物质铁炭材料 氮硫共掺杂 过一硫酸盐活化 双酚A降解 

分 类 号：O643.36[理学—物理化学] X703[理学—化学]