魔方状微纳结构BaTiO3的制备及其压电催化性能
Preparation and piezocatalytic properties of Rubik's cube-like nano-microstructure BaTiO3
作者单位E-mail
胡志文 景德镇陶瓷大学材料科学与工程学院,景德镇 333403
浙江大学硅材料国家重点实验室,杭州 310027 
 
董伟霞 1 景德镇陶瓷大学材料科学与工程学院,景德镇 333403
景德镇陶瓷大学材料科学与工程学院,景德镇 333403
浙江大学硅材料国家重点实验室,杭州 310027 
weixia_dong@sina.com 
包启富 景德镇陶瓷大学材料科学与工程学院,景德镇 333403  
李萍 景德镇陶瓷大学材料科学与工程学院,景德镇 333403  
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BaTiO3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BaTiO3。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。
关键词: 魔方状  微纳结构  BaTiO3  压电催化
基金项目: 国家自然科学基金(No.)资助。
Abstract: Rubik's cube like nano microstructure BaTiO3 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 BaTiO3 was investigated. The results exhibited that as-synthesized samples presented a Rubik's cube-like tetragonal BaTiO3 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 BaTiO3 showed more excellent piezocatalytic performance with better piezocatalytic activity and durability than photocatalytic.
Keywords: Rubik's cube-like  nano-microstructure  BaTiO3  piezocatalytic
投稿时间:2022-09-16 修订日期:2022-12-23
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