环境工程学报2017，Vol.11Issue(4)：2370-2376,7.DOI:10.12030/j.cjee.201510134
膜催化处理废气中一氧化氮的性能及机制
Mechanism and performance of a membrane photocatalytic reactor for NO removal
摘要
Abstract
Fe-doped titanium dioxide (Fe-TiO2) was prepared by the sol-gel method and was loaded on a polysulfone (PSF) hollow fiber membrane.Fe-TiO2/PSF was used for the treatment of NOx under light irradiation.NO removal efficiency reached 35％ under ultraviolet (UV) irradiation.X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectrometry (FT-IR) were used to characterize the prepared Fe-TiO2/ PSF.The results of FT-IR and XPS revealed that hydroxyl radicals (OH) and nitrate ions (NO3-) were found after the photocatalytic reaction.The membrane bioreactor degradation of NO can be described as a combination of membrane mass transfer and photocatalytic oxidation.NO was mass transferred through fenestrae to the surface of catalyst,then oxidized into NO2 and HNO2 by free radicals,which in turn became HNO3.The membrane photocatalytic oxidation reaction of NO with the Fe-TiO2/PSF catalyst followed Langmuir-Hinshelwood kinetics.关键词
NO/Fe-TiO2/PSF/膜光催化/中空纤维膜Key words
NO/Fe-TiO2/PSF/membrane photocatalytic/hollow fiber membrane分类
资源环境引用本文复制引用
黎宝仁,陈洲洋,王剑斌,张再利,樊青娟,魏在山..膜催化处理废气中一氧化氮的性能及机制[J].环境工程学报,2017,11(4):2370-2376,7.基金项目
国家自然科学基金资助项目(21377171) （21377171）
中央高校基本科研业务费专项 （）
