锐钛矿TiO_2纳米球的低温微波法制备及其光催化性能  

Preparation and Photocatalytic Property of Anatase TiO_2 Nanospheres by Microwave-Assisted Method at Low Temperature

作　　者：张彩云[1] 王芳[2] 李戎[3] 邢彦军[1] ZHANG Caiyun;WANG Fang;LI Rong;XING Yanjun(a. College of Chemistry, Chemical Engineering and Biotechnolog;b. National Engineering Research Center for Dyeing and Finishing, 1.Donghua University, Shanghai 201620, China;2. School of Chemistry and Chemical Engineering, Universty of South China, Hengyang 421001, Chin)

机构地区：[1]东华大学化学化工与生物工程学院,上海201620 [2]南华大学化学化工学院,湖南衡阳421001 [3]东华大学国家染整技术工程研究中心,上海201620

出　　处：《东华大学学报（自然科学版）》2018年第2期238-243,262,共7页Journal of Donghua University(Natural Science)

基　　金：国家科技支撑计划资助项目(ID2012BAK30B03);中央高校基本科研业务费专项资金资助项目(2232013A3-05)

摘　　要：以六氟钛酸铵为钛源和硼酸为硼源,在低温(<100℃)开放体系中,通过微波辅助法制备了花形TiO_2纳米球。同时,当钛源浓度较低(c((NH_4)_2TiF_6)=1.5×10^(-3) mol/L)时,也能在较短加热时间内(15min)制备得到结晶度较好的锐钛矿相TiO_2。以罗丹明B为降解目标,探讨了不同微波加热时间下制备的TiO_2纳米球的紫外光催化性能。结果表明,采用该方法制备的TiO_2纳米球在紫外光下具有很好的光催化性能,且均优于商品化P25-TiO_2。A flower-shaped TiO2 nanosphere was prepared with（NH4）2TiF6 and H3BO3 at low temperature（〈100 ℃）by microwave-assisted method in open system.The anatase TiO2 with good crystallinity could also be prepared even at low concentration of（NH4）2TiF6（1.5×10-3 mol/L）and short heating time（15 min）with the microwave-assisted method.The photocatalytic properties of anatase TiO2 prepared at different time were evaluated by degrading rhodamine B（RhB）.The results reveal that the prepared TiO2 nanospheres exhibit good photocatalytic activities under ultraviolet light and are better than commercialized P25-TiO2 .

关 键 词：常压微波辅助法 TiO2纳米球 光催化 

分 类 号：TS190[轻工技术与工程—纺织化学与染整工程]