期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
BiOI/TiO2异质结的制备及可见光催化性能
- 河北师范大学 化学与材料科学学院, 河北 石家庄 050024
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DOI：10.13763/j.cnki.jhebnu.nse.2017.03.009
Synthesis and Visible Light Photocatalytic Activities of BiOI/TiO2 Hetero-structural Photocatalysts
摘要/Abstract
以四氯化钛为钛源，硝酸铋为铋源，采用简单易控低温水解的方法，合成了BiOI/TiO2异质结，利用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和紫外-可见漫反射光谱（UV-vis DRS）等仪器对样品进行了表征.研究了BiOI/TiO2异质结在可见光下对罗丹明B与甲基橙的催化降解性能.研究结果表明：BiOI/TiO2 p-n结的形成，提高了可见光催化活性.100℃反应10h样品氙灯（300W，λ>420nm）照射1h对罗丹明B降解率达98.6%，照射2h对甲基橙的降解率达84.3%.
In this paper, with tetrabutyl titanate as the titanium source and bismuth nitrate as the bismuth source, the BiOI/TiO2 heterojunction was synthesized via a facile hydrolysis method at low temperature. The as-prepared powders were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM) and UV-vis diffuse reflectance spectroscopy (UV-vis DRS). The results show that BiOI/TiO2 heterojunctions can significantly enhance the photocatalytic activities:the degradation ratio of rhoda mine B for the sample prepared at 100℃ for 10 h is up to 98.6% under the irradiation with xenon lamp (300W, λ>420nm) for 1h, and the degradation ratio of methyl orange can be up to 84.3% under the irradiation for 2h.
关键词
参考文献 10
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