碳纳米管表面等离子体改性活化过一硫酸盐性能研究  

Study on the Activation of Peroxymonosulfate by Surface Plasmon Modification of Carbon Nanotubes

作　　者：姜涛[1] 汪欢 雷乐成[1,2] 杨彬 JIANG Tao;WANG Huan;LEI Lecheng;YANG Bin(College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310058,China;Institute of Zhejiang University-Quzhou,Quzhou 324000,China)

机构地区：[1]浙江大学化学工程与生物工程学院,浙江杭州310058 [2]浙江大学衢州研究院,浙江衢州324000

出　　处：《化学反应工程与工艺》2024年第1期1-9,共9页Chemical Reaction Engineering and Technology

基　　金：国家自然基金面上项目(22278366);浙江省领雁研发计划项目(2023C03140)。

摘　　要：将简单高效的等离子体刻蚀方法应用于碳纳米管(CNTs)的表面改性,通过扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)和拉曼光谱(Raman)等对改性后的催化剂进行表征分析,结果表明经刻蚀得到的CNTs缺陷程度和氧含量均有较大提升。研究发现改性后的CNTs催化剂可有效提升过一硫酸盐(PMS)活化性能,在降解水中2,4-二氯苯酚(2,4-DCP)的性能研究中反应速率为未改性CNTs的3.2倍,30min内2,4-DCP去除率可达到97%,同时在实际水体和放大实验中也展现出良好的性能。淬灭实验和电子顺磁共振实验结果表明体系中主要的活性物质为单线态氧(^(1)O_(2))。本研究提供了一种简单制备高性能非金属活化PMS催化剂的方法,并在水体中有机污染物的去除中展现出良好的应用前景。A simple and efficient plasma etching method was applied on the surface modification of carbon nanotubes(CNTs).The modified catalysts were characterized by scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS)and Raman spectroscopy.The results showed that the defect degree and oxygen content of CNTs were greatly improved.It was found that oxygen and nitrogen co-doped carbon nanotubes could effectively improve the activation performance of peroxymonosulfate(PMS).In the study of degradation performance of 2,4-dichlorophenol(2,4-DCP),its reaction rate was 3.2 times that of the unmodified carbon nanotubes,and the removal rate of 2,4-DCP could reach 97%within 30 min.At the same time,it also showed good performance in actual water and amplification experiments.Quenching experiment and electron paramagnetic resonance experiment showed that the main active substance in the system is singlet oxygen(^(1)O_(2)).This paper provided a simple preparation method of high performance metal-free PMS catalyst,and showed a good application prospect in the removal of organic pollutants in water.

关 键 词：等离子体改性 过硫酸盐 水处理 碳纳米管 2 4-二氯苯酚 

分 类 号：TQ426[化学工程] X703[环境科学与工程—环境工程]