Pt@TiO2-SiO2复合纳米纤维的制备及其光催化性能研究  

Preparation of Pt-doped Electrospun TiO 2@SiO 2 Composite Nanofibers and Study on Their Photocatalytic Performance

作　　者：孙怡俊 杨升元 Sun Yijun;Yang Shengyuan(Donghua University,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Shanghai201620,China)

机构地区：[1]东华大学材料科学与工程学院,上海201620

出　　处：《山东化工》2020年第4期29-31,39,共4页Shandong Chemical Industry

基　　金：中国国家重点研究发展计划(2016YFA0201702/2016YFA0201700);上海市自然科学基金(19ZR1400900)。

摘　　要：TiO2材料是近年来一种常用的光催化材料。为了提高TiO2材料对染料分子的吸附以及改善其在可见光区的光催化性能,本文通过静电纺丝法和溶胶凝胶法制备了Pt掺杂的TiO2-SiO2复合纳米纤维,通过SEM、XRD、BET、UV-vis等方法对材料进行表征,以亚甲基蓝模拟污染物进行光催化降解动力学实验。实验结果显示[m(Pt)∶m(TiO2)]=0. 328%时显现出最佳的光催化性能,对溶液中的亚甲基蓝的降解率达到了99%。TiO 2 material is a commonly used photocatalytic material in recent years.In order to improve the adsorption of dye molecules by TiO 2 materials and improve their photocatalytic performance in the visible light region,Pt-doped in TiO 2-SiO 2 composite nanofibers were prepared by electrospinning and sol-gel methods.SEM,BET,UV-vis and other methods were used to characterize the materials,and photocatalytic degradation kinetic experiments were performed,using methylene blue as simulated pollutants.The result shows that the best photocatalytic performance is exhibited when[m(TiO 2)∶m(Pt)]=0.328%,and the degradation rate of methylene blue in the solution reaches 99%.

关 键 词：光催化 静电纺丝 PT掺杂 TIO2-SIO2 亚甲基蓝 

分 类 号：TQ342.94[化学工程—化纤工业] O643.36[理学—物理化学]