摘要
以钛酸丁酯为前驱体,聚乙二醇(PEG)2000为添加剂,采用溶胶-凝胶法制备TiO_2薄膜,研究PEG2000的添加量对TiO_2薄膜性能的影响。通过热重分析仪、X射线衍射仪(XRD)、比表面积及孔结构分析仪(BET)、扫描电镜(SEM)、接触角分析等手段对薄膜的热稳定性、晶相变化、比表面积、孔结构、表面形貌和亲水性进行表征。结果表明:随PEG2000添加量增加,TiO_2薄膜锐钛矿晶型转变为金红石晶型的温度升高,薄膜表面从致密平滑转变为开裂粗糙,比表面积持续增大,平均孔径则减小,接触角由3°增至20.2°;当PEG2000的添加量为5%时,TiO_2薄膜的性能最佳,表现出超亲水性。
TiO2 membrane was prepared by sol-gel method through using tetrabutyl titanate as the precursor,PEG as an additive.Thermal stability,crystal phase change,specific surface area,pore structure,surface morphology,and hydrophilicity of the membrane were characterized by means of TG-DTG,XRD,BET,SEM and contact angle analysis etc.The results show that,with the increase of PEG2000 content,the temperature of TiO2 membrane anatase crystal transformed into rutile crystal increases,the surface of membrane develops from dense and smooth to cracking and course,the specific surface area continues to increase and the average pore size decreases,the contact angle increases from 3°to 20.2°.When the PEG2000 content is 5%,TiO2 membrane has the best performance and super hydrophilicity.
作者
同帜
王磊
樊璐
杨博文
孙小娟
行静
TONG Zhi;WANG Lei;FAN Lu;YANG Bowen;SUN Xiaojuan;XING Jing(College of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China)
出处
《粉末冶金材料科学与工程》
EI
北大核心
2019年第1期52-57,共6页
Materials Science and Engineering of Powder Metallurgy
基金
陕西省科技重点研发专项资金(2017GY-128)
关键词
TIO2薄膜
聚乙二醇
表面形貌
亲水性
热学性能
TiO2 membrane
polyethylene glycol
surface microstructure
hydrophilicity
thermal property
