| 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 | |
| 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: 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)和2021年度开放课题“硅材料国家重点实验室”项目(No.SKL2021-04)资助。 | |
| Abstract: 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 piezo-catalytic 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 photo-catalytic performance. During the degradation process, as-synthesized Rubik's cube-like BaTiO3 showed more excel-lent 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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| 胡志文,董伟霞,包启富,李萍.魔方状微纳结构BaTiO3的制备及其压电催化性能[J].无机化学学报,2023,39(3):475-484. | |
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