魔方状微纳结构BaTiO_(3)的制备及其压电催化性能  

Preparation and piezocatalytic properties of Rubik′s cube⁃like nano⁃microstructure BaTiO_(3)

作　　者：胡志文 董伟霞 包启富[1] 李萍 HU Zhi-Wen;DONG Wei-Xia;BAO Qi-Fu;LI Ping(School of Materials Science and Engineering,Jingdezhen Ceramic University,Jingdezhen,Jiangxi 333403,China;State Key Laboratory of Silicon Materials,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]景德镇陶瓷大学材料科学与工程学院,景德镇333403 [2]浙江大学硅材料国家重点实验室,杭州310027

出　　处：《无机化学学报》2023年第3期475-484,共10页Chinese Journal of Inorganic Chemistry

基　　金：江西省教育厅重点项目(No.GJJ201301);江西省教育厅科学技术研究项目(No.GJJ2201048);景德镇市陶瓷产业重大攻关项目(No.2021ZDGG004);景德镇市科技厅项目(No.2021GYZD009-18,20224GY008-16);2021年度开放课题“硅材料国家重点实验室”项目(No.SKL2021-04)资助。

摘　　要：在简单溶剂热条件下,通过控制钡、钛物质的量之比制备了魔方状微纳结构BaTiO_(3)粉体,并以5 mg·L^(-1)罗丹明B(RhB)溶液为降解对象测试其压电催化性能。采用扫描电子显微镜、X射线衍射、傅里叶变换红外光谱对所制备粉体的物化性质进行详细表征,并测试其压电、光催化活性及循环稳定性。结果表明,钡、钛物质的量之比为1∶1时,合成的粉体为由立方体组装而成的魔方状四方相结构的BaTiO_(3)。在40 kHz、360 W的超声条件下,180 min内的降解率达90%,5次循环后的降解率为79.7%,变化率为11.4%,优于其光催化性能,具备优异的压电催化活性及循环稳定性。Rubik′s cube-like nano-microstructure BaTiO_(3) was synthesized via a simple solvothermal method by changing the molar ratio of Ba to Ti,and its piezocatalytic performance was characterized by degrading 5 mg·L^(-1) rhodamine B(RhB)solution.The morphology and phase structure of as-synthesized samples were analyzed by scanning electron microscopy(SEM),X-ray diffraction(XRD),and Fourier transform infrared spectra(FT-IR).The piezocatalytic performance of synthesized BaTiO_(3) was investigated.The results exhibited that as-synthesized samples presented a Rubik′s cube-like tetragonal BaTiO_(3) which assembled from cubes when the molar ratio of Ba to Ti was 1∶1.Under the condition of ultrasonic frequency of 40 kHz and ultrasonic power of 360 W,the degradation rate reached 90%at 180 min,the degradation rate was 79.7%,and changed to 11.4%after five cycles,which is superior to photocatalytic performance.During the degradation process,as-synthesized Rubik′s cube-like BaTiO_(3) showed more excellent piezocatalytic performance with better piezocatalytic activity and durability than photocatalytic.

关 键 词：魔方状 微纳结构 BaTiO_(3) 压电催化 

分 类 号：O611.3[理学—无机化学]