预氧化PAN/TiO2复合微粒的太阳光催化活性

摘要采用水相沉淀法合成聚丙烯腈(PAN),并将其复合到纳米二氧化钛(TiO₂)表面,制备PAN/TiO₂复合微粒。PAN/TiO₂经预氧化得到共轭结构的复合微粒,拓宽了纳米TiO₂的光响应范围。采用FTIR和DTA-TG对PAN/TiO₂进行表征,结果表明,纳米TiO₂上附着有预氧化的PAN,PAN/TiO₂热稳定性较好。改变n(AN)∶n(TiO₂)制备不同的PAN/TiO₂,并用于太阳光下罗丹明B的降解。结果表明,n(AN)∶n(TiO₂)为1∶120时,PAN/TiO₂光催化性能较好。 Polyacrylonitrile(PAN)was prepared by precipitation method,and PAN/TiO₂ composite particles were prepared by compounding PAN onto the surface of nano-TiO₂.PAN/TiO₂ composite particles were preox⁃idized to obtain composite particles with conjugated structure,so as to broaden the light response range of na⁃no-TiO₂.PAN/TiO₂ were characterized by FTIR and DTA-TG.The results showed that the preoxidized polyacry⁃lonitrile attached to nano-titanium dioxide,and the thermal stability of PAN/TiO₂ was good.PAN/TiO₂ of differ⁃ent ratio were prepared by changing the molar ratio of AN and TiO₂,and it was applied to the degradation of Rhodamine B under sunlight.When the molar ratio of AN and TiO₂ was 1∶120,the photocatalytic properties were better.

作者张杰 ZHANG Jie(Department of Applied Chemistry,Hengshui University,Hengshui 053000,China)

机构地区衡水学院应用化学系

出处《印染助剂》 CAS 北大核心 2021年第4期37-39,共3页 Textile Auxiliaries

基金 2021年河北省高等学校科学技术研究项目(ZC2021238) 衡水市科技局项目(2020011008Z) 衡水学院校级科研课题(2020ZR21)。

关键词二氧化钛聚丙烯腈复合微粒 PAN/TiO_(2 PAN composite particles

分类号 X791 [环境科学与工程—环境工程]