摘要
聚酯织物经碱水解引入羧基后与Fe离子反应,可制备羧酸改性聚酯织物铁配合物(Fe@C-PET)。研究了其作为非均相Fenton反应光催化剂对表面活性剂1227氧化降解反应的催化作用。结果表明,聚酯织物表面羧酸含量和Fe^(3+)离子浓度的增加都能够显著提高Fe@C-PET表面的铁配合量,从而促进对1227的氧化降解反应。此外,提高H_(2)O_(2)浓度或引入LED辐射光可改善光催化剂的活性,以加速1227的氧化降解反应。在Fe@C-PET/H_(2)O_(2)体系中1227分子的苯环结构遭到破坏,所生成的中间体可进一步发生矿化反应。
Polyester(PET) fiber is introduced surface carboxyl groups by alkaline hydrolysis, which can react with Feions to prepare carboxylated PET fiber Fe complexes(Fe@C-PET). On the basis of optimized preparation and characteristics, the enhanced effect of Fe^(3+)@C-PET as heterogeneous Fenton photocatalyst for the oxidative degradation of surfactant benzyldimethyldodecyl ammonium chloride(BDDAC) is investigated. The effect of main reaction conditions on BDDAC oxidative degradation is also studied. The results indicate that increasing the number of surface carboxyl groups of modified PET fiber and Feions concentration can significantly increase the Fe content on Fe@C-PET, which can significantly accelerate the oxidative degradation of BDDAC. Besides, increasing H_(2)O_(2)concentration or introducing LED irradiation light can also accelerate BDDAC degradation. The benzene structure in BDDAC molecules can be decomposed and further mineralized by Fe@C-PET/H_(2)O_(2)system.
作者
丁文超
董永春
严英文
张晓亮
DING Wenchao;DONG Yongchun;YAN Yingwen;ZHANG Xiaoliang(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Key Laboratory of Advanced Textile Composites,Ministry of Education,Tiangong University,Tianjin 300387,China)
出处
《印染》
CAS
北大核心
2022年第9期7-12,共6页
China Dyeing and Finishing
基金
江苏省双创人才项目(2016-340)。
关键词
氧化降解
光催化剂
表面改性
1227
聚酯织物
oxidative degradation
photocatalyst
surface modification
BDDAC
PET fiber
