CC/PANI/TiO_(2)复合材料的制备及其光催化性能  

Synthesis of CC/PANI/TiO_(2) Composite Material and Its Photocatalytic Performance

作　　者：陈凤华 石向东 梁娓娓 杨茂森 陈庆涛 姜利英 张永辉 Chen Fenghua;Shi Xiangdong;Liang Weiwei;Yang Maosen;Chen Qingtao;Jiang Liying;Zhang Yonghui(College of Materials and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China;College of Electrical and Information Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China)

机构地区：[1]郑州轻工业大学材料与化学工程学院,河南郑州450002 [2]郑州轻工业大学电气信息工程学院,河南郑州450002

出　　处：《稀有金属材料与工程》2021年第10期3627-3633,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(21671179,62073299);河南省科技厅科技攻关计划(202102210045)。

摘　　要：先采用原位聚合的方法在碳布上生长聚苯胺,然后利用溶剂热法在制备的碳布/聚苯胺(CC/PANI)复合材料上水解钛酸四丁酯,成功制备了CC/PANI/TiO_(2)复合材料,并通过SEM、XRD、UV、FTIR、XPS等手段对复合材料进行了形貌和结构表征。罗丹明B(RhB)的光催化降解实验结果表明,CC/PANI/TiO_(2)复合材料具有比TiO_(2)更优异的吸附-光催化降解活性。光致发光光谱、瞬态光电流响应和电化学阻抗谱表明,光催化活性提高的原因是由于CC/PANI/TiO_(2)复合材料更有效地促进了电子-空穴对的分离和电子转移效率,抑制了光生载流子的复合。活性物质捕捉实验证实,•OH和•O_(2)-是复合材料光催化降解RhB过程中的主要活性物质。此外,CC/PANI/TiO_(2)复合材料简便的分离工艺和较好的循环使用稳定性,进一步显示了其在污水处理领域中的良好应用前景。Polyaniline was firstly grown on carbon cloth by in-situ polymerization.The final composite material of CC/PANI/TiO_(2)was then synthesized via solvothermal method,during which the tetrabutyl titanate was hydrolyzed to form TiO_(2)nanosheets on the carbon cloth/polyaniline(CC/PANI)composite material.The synthesized photocatalysts were characterized using SEM,XRD,UV,FTIR,XPS and so on.The photocatalytic degradation performances of RhB over the prepared CC/PANI/TiO_(2)and the pure TiO_(2)were compared.The results indicate that CC/PANI/TiO_(2)composite material has better photocatalytic activity than TiO_(2)under UV-vis irradiation.PL,transient photocurrent response and EIS curves verify that the reasons for such enhanced photocatalytic activity are the accelerated mobility of photogenerated carriers and the lower recombination rate of photogenerated electrons and holes.The capture of active pieces experiments indicates that the free•OH radicals and•O_(2)-radicals are the main active oxidizing species involved in the RhB photoreaction process of CC/PANI/TiO_(2).Besides these important results,the easy separation and good regeneration property of the prepared CC/PANI/TiO_(2)photocatalyst further endow its good application prospects in the field of sewage treatment.

关 键 词：碳布 聚苯胺 二氧化钛 光催化 

分 类 号：O643.36[理学—物理化学]