摘要
本研究以纤维素/壳聚糖气凝胶(CCG)为基底,负载可见光催化剂β-FeOOH/Fe_(3)O_(4),制备β-FeOOH/Fe_(3)O_(4)@CCG复合气凝胶,构筑光Fenton体系提高催化效能。系统研究了不同β-FeOOH/Fe_(3)O_(4)质量比以及不同负载量复合气凝胶对甲基橙(MO)的降解效果,并阐述了光Fenton降解机理。结果表明,在光Fenton降解中,随着β-FeOOH/Fe_(3)O_(4)负载量的增加,MO降解率提高。当β-FeOOH/Fe_(3)O_(4)的质量比为2∶1时,复合气凝胶降解能力最高,MO降解率达到89.1%。自由基捕获结果表明,光诱导降解MO的主要活性物质为羟基自由基。
The study mainly developed the preparation of cellulose/chitosan composite aerogels loaded with visible light catalystβ-FeOOH/Fe_(3)O_(4),which was subsequently used as a phototropic Fenton-like system to improve the catalytic efficiency.The degradation effect of com‐posite aerogels on methyl orange(MO)with differentβ-FeOOH/Fe_(3)O_(4) mass ratios and different loadings was systematically investigated,and the phototropic Fenton-like degradation mechanism was elaborated.The results showed that in phototropic Fenton-like degradation,the deg‐radation rate of MO increased with the increase of loadings.When the mass ratio ofβ-FeOOH/Fe_(3)O_(4) was 2∶1,the degradation ability at‐tained the optimum state,with a degradation rate of 89.1%.The results of free radical trapping experiments showed that the main active sub‐tances for photo-induced degradation of methyl orange could be attributed to hydroxyl radicals.
作者
杨晓雨
杨祥建
李飞云
陈天影
邹小峰
唐艳军
YANG Xiaoyu;YANG Xiangjian;LI Feiyun;CHEN Tianying;ZOU Xiaofeng;TANG Yanjun(Pulp and Papermaking Research Center,College of Textile Science and Engineering,Zhejiang Sci-Tech University,Hangzhou,Zhejiang Province,310008;Zhejiang Huafeng Paper Technology Co.,Ltd.,Anji,Zhejiang Province,313309)
出处
《中国造纸》
北大核心
2024年第12期23-30,共8页
China Pulp & Paper
基金
浙江省“领雁”研发攻关计划项目(2023C03157)。
关键词
纤维素
多态铁
复合气凝胶
光催化
cellulose
polymorphic iron
composite aerogel
photocatalysis
