| Br掺杂Bi2WO6微球的制备及其光催化性能 | |
| Preparation and Photocatalytic Degradation Performance of Br-Doped Br2WO6 Microsphere | |
| 摘要: 以五水合硝酸铋和二水合钨酸钠为原料，以十六烷基三甲基溴化铵（CTAB）为溴源，制备Br掺杂Bi2WO6，通过调节CTAB的含量，利用水热法制备了Br掺杂量不同的Bi2WO6催化剂。以抗生素环丙沙星、诺氟沙星作为污染物，测试Br掺杂Bi2WO6催化剂的光催化性能。结果表明，2%掺杂量（物质的量分数）的Bi2WO6相比于Bi2WO6的光催化降解性能最好。此外，通过X射线粉末衍射、红外光谱、扫描电镜、荧光光谱、X射线光电子能谱和拉曼光谱等一系列表征，对Br掺杂后催化剂的物相组成、微观形貌、光生电荷分离率和光学性质等进行分析。最后进行了自由基捕获实验并提出了可能的光催化机理。 | |
| 关键词: Bi2WO6 微球 光催化性能 | |
| 基金项目: 国家自然科学基金（No.21171053）、湖北省教育厅重点科研项目（No.D20213102）资助。 | |
| Abstract: Bismuth nitrate pentahydrate and sodium tungstate dihydrate were used as raw materials, and cetyltrimethylammonium bromide (CTAB) was used as bromine source to achieve Br-doped Bi2WO6. By adjusting the content of CTAB, Bi2WO6 catalysts with different Br doping amounts were prepared by hydrothermal method. The antibiotics ciprofloxacin and norfloxacin were used as pollutants to test the photocatalytic performance of the Br-doped Bi2WO6 catalyst. The results showed that the 2% (molar fraction) doped Bi2WO6 had the best photocatalytic degradation performance compared to pure Bi2WO6. In addition, through a series of tests such as X-ray powder diffraction, Fourier transform infrared spectra, scanning electron microscope, photoluminescence spectra, UV-Vis diffuse reflection spectra, Raman, and X-ray photoelectron spectra, the phase composition, micro morphology, photo-generated charge separation rate, and optical properties of the Br-doped catalyst were analyzed. The free radical capture experiments were carried out and the possible photocatalytic mechanisms were proposed. | |
| Keywords: Bi2WO6 microspheres photocatalytic properties | |
| 投稿时间：2022-02-10 修订日期：2022-07-15 | |
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| 周鑫,张志,陈飘,杨水金,杨赟.Br掺杂Bi2WO6微球的制备及其光催化性能[J].无机化学学报,2022,38(9):1716-1728. | |
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