一维纳米TiO_(2)的制备及其光催化性能研究  

Preparation and photocatalytic performance of 1D nano-TiO_(2)

作　　者：叶红坤 杜晶晶[1] 赵军伟[2] 程晓民[1] Ye Hongkun;Du Jingjing;Zhao Junwei;Cheng Xiaomin(School of Mechanical Engineering,Ningbo University of Technology,Ningbo 315016;School of Materials,Ningbo University of Technology,Ningbo 315016)

机构地区：[1]宁波工程学院机械工程学院,宁波315016 [2]宁波工程学院材料学院,宁波315016

出　　处：《化工新型材料》2021年第4期217-220,共4页New Chemical Materials

基　　金：国家自然科学基金(51275251);宁波工程学院大学生科技创新项目(2019038);宁波“科技创新2025”重大科技专项项目(2020Z109)。

摘　　要：采用水热法有效制备出一维纳米TiO_(2)材料。运用X射线衍射、透射电子显微镜和紫外-可见光谱等手段表征了样品的结构和性质,探讨一维纳米TiO_(2)材料形成机理,并考察其光催化降解气相苯的活性。结果表明:水热反应时间对TiO_(2)晶型及形貌具有较大影响,其中水热时间为8h所制备的TiO_(2)纳米管,光吸收出现明显的"蓝移",反应80min后,去除81%的气相苯,CO2终产物的浓度为640mg/m3,表现出最佳的光催化活性。One-dimensional(1D)nano-TiO_(2) was prepared by hydrothermal method efficiently.The prepared samples were characterized by X-ray diffraction,transmission electron microscopy and UV-Vis diffuse reflectance spectroscopy,the formation mechanism of 1D nano-TiO_(2) was discussed.The photocatalytic activity of the sample was tested by degradation of gaseous benzene.Research found that reaction time had a significant influence on structure and morphology of TiO_(2) nanomaterials.The optical absorption edges of the TiO_(2) nanotubes prepared by 8 hhad "blue shift".The TiO_(2) nanotubes showed the best photocatalytic activity with high benzene degradation rate(81%)and high concentration of CO2(640 mg/m3)after 80 min reaction.

关 键 词：一维纳米二氧化钛 水热法 光催化 气相苯 

分 类 号：O643[理学—物理化学]