活性碳纤维负载喹啉铁活化PMS氧化染料的研究  

Study on activation of PMS oxidation dyes by 8-hydroxyquinoline iron loaded by activated carbon fiber

作　　者：柏青海 苏健 解忍杰 柳秀丹 姚玉元[1] 

机构地区：[1]浙江理工大学先进纺织材料制备技术教育部重点实验室,杭州310018 [2]通标标准技术服务有限公司,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2018年第2期145-151,共7页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金重点项目(51133006);浙江省公益技术研究项目(2016C31076)

摘　　要：以活性碳纤维(Activated carbon fibers,ACFs)为催化载体,制备出负载喹啉铁(8-hydroxyquinoline iron,QuFe)的催化材料QuFe@ACFs。采用活性艳红195(RR 195)染料为探针化合物,以过一硫酸氢盐(Peroxymonosulfate,PMS)为氧化剂进行催化氧化实验,探究QuFe@ACFs在不同因素对的催化活性的影响。实验结果表明:QuFe负载到活性碳纤维上,极大地提高其催化活性;在PMS存在时,QuFe@ACFs具有良好的持续催化性能;当PMS用量为0.5 mmol/L时,QuFe@ACFs/PMS体系的催化活性增加,但是当PMS用量低于或者高0.5mmol/L时,QuFe@ACFs/PMS催化活性降低;随着反应温度的升高,对染料RR 195去除效率增快。利用醇类捕获技术检测到QuFe@ACFs/PMS体系中的活性氧种是羟自由基(·OH)和硫酸根自由基(SO4·-),并推测可能的催化氧化反应机理。QuFe@ACFs合成方法简单、实用性强,拓宽传统芬顿催化剂活化PMS的pH使用范围,解决传统铁离子活化PMS技术中存在的二次污染问题。Activated carbon fibers（ACFs）was used as the catalytic carrier to prepare the catalytic material QuFe@ACFs of 8-hydroxyquinoline iron（QuFe）.The reactive brilliant red 195（RR 195）dye was used as the probe compound,and Peroxymonosulfate（PMS）was used as the oxidant to do the catalytic oxidation experiment so as to explore the catalytic activity of QuFe@ACFs under the influence of various factors.The experimental results show that QuFe was loaded onto activated carbon fibers,which greatly improved its catalytic activity.QuFe@ACFs had good sustained catalytic performance in the presence of PMS.The catalytic activity of the QuFe@ACFs/PMS system increased when the PMS was 0.5 mmol/L,but the catalytic activity of the QuFe@ACFs/PMS system lowered when the PMS usage was lower than or higher than 0.5 mmol/L.With the increase of reaction temperature,the removal efficiency of dye RR 195 was enhanced.Moreover,alcohol capturing technology was employed to confirm that hydroxyl radicals（·OH）and sulfate radicals（SO4·-）served as the active species in the QuFe@ ACFs/PMS system.Meanwhile,the possible mechanism of catalytic oxidation was speculated.The synthesis method of QuFe@ACFs is simple,and it has strong practicability.At the same time,it broadens the pH range of the traditional Fenton catalyst activated PMS,and solves the secondary pollution problem in the traditional iron activated PMS technology.

关 键 词：8-羟基喹啉铁 活性碳纤维 PMS活化 

分 类 号：TS195.644[轻工技术与工程—纺织化学与染整工程]