预氧化PAN/TiO_(2)复合微粒的太阳光催化活性  

Photocatalytic activity of preoxidized PAN/TiO_(2) composite particles under sunlight

作　　者：张杰[1] ZHANG Jie(Department of Applied Chemistry,Hengshui University,Hengshui 053000,China)

机构地区：[1]衡水学院应用化学系,河北衡水053000

出　　处：《印染助剂》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)。

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(TiO_(2))表面,制备PAN/TiO_(2)复合微粒。PAN/TiO_(2)经预氧化得到共轭结构的复合微粒,拓宽了纳米TiO_(2)的光响应范围。采用FTIR和DTA-TG对PAN/TiO_(2)进行表征,结果表明,纳米TiO_(2)上附着有预氧化的PAN,PAN/TiO_(2)热稳定性较好。改变n(AN)∶n(TiO_(2))制备不同的PAN/TiO_(2),并用于太阳光下罗丹明B的降解。结果表明,n(AN)∶n(TiO_(2))为1∶120时,PAN/TiO_(2)光催化性能较好。Polyacrylonitrile(PAN)was prepared by precipitation method,and PAN/TiO_(2) composite particles were prepared by compounding PAN onto the surface of nano-TiO_(2).PAN/TiO_(2) composite particles were preox⁃idized to obtain composite particles with conjugated structure,so as to broaden the light response range of na⁃no-TiO_(2).PAN/TiO_(2) 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/TiO_(2) was good.PAN/TiO_(2) of differ⁃ent ratio were prepared by changing the molar ratio of AN and TiO_(2),and it was applied to the degradation of Rhodamine B under sunlight.When the molar ratio of AN and TiO_(2) was 1∶120,the photocatalytic properties were better.

关 键 词：二氧化钛 聚丙烯腈 复合微粒 

分 类 号：X791[环境科学与工程—环境工程]