天津工业大学学报2018，Vol.37Issue(2)：14-19,6.DOI:10.3969/j.issn.1671-024x.2018.02.003
PVDF/PDA/Ag催化膜对亚甲基蓝的催化降解
Degradation of methylene blue with PVDF/PDA/Ag catalytic membrane
摘要
Abstract
In order to prepare catalytic membrane materials for degrading dyes,the PVDF powders were modified with do-pamine firstly,and then the porous PVDF/PDA/Ag membrane was prepared by modified PVDF powders.Then, the silver nanoparticles were loaded and fixed in the membrane by the reduction of dopamine,and the catalytic membrane was obtained.Fourier transform infrared spectroscopy spectra,field-emission scanning electron mi-croscope, X-ray photoelectron spectroscopy, inductively coupled plasma atomic emission spectroscopy were used to characterize the prepared film.Results indicated that silver nanoparticles were introduced into the surface and pores of the modified membrane.With the catalytic reaction temperature increased from 20℃to 40℃,the reac-tion rate constant of the catalytic membrane increased from 0.088 min-1to 0.394 min-1.The catalytic degradation of methylene blue by catalytic membrane belongs to the first-order reaction kinetics.And the apparent reaction rate constant was 0.066 15 min-1,the activation energy Eawas 56.13 kJ/mol.Moreover, the highly reusable of catalytic membrane has been also prepared,the degradation percent remained above 80.8% after eight cycles.关键词
聚偏氟乙烯/多巴胺/银纳米颗粒/催化/亚甲基蓝Key words
poly(vinylidene fluoride)/dopamine/silver nanoparticles/catalytic/methylene blue分类
轻工纺织引用本文复制引用
陈熙,王爽,马胜奎,赵博武,王文强,赵楚,张彬..PVDF/PDA/Ag催化膜对亚甲基蓝的催化降解[J].天津工业大学学报,2018,37(2):14-19,6.基金项目
天津市高等学校基本科研业务费资助项目(tjpuzk20170201) （tjpuzk20170201）
天津市自然科学基金项目(14JCZDJC38100) （14JCZDJC38100）
