溶剂对BiOBr结构和光催化降解RhB的影响

发布时间：2018-03-20 00:09

本文选题：BiOBr　切入点：罗丹明B　出处：《分子催化》2016年04期 　论文类型：期刊论文

【摘要】：以水热法合成了不同形貌的BiOBr样品.采用X射线衍射(XRD)、扫描电子显微镜(SEM)、氮气吸附脱附曲线和紫外可见漫反射光谱(UV-Vis DRS)研究溶剂对BiOBr样品的晶形、形貌、孔径分布和比表面积、光学性质的影响;以罗丹明B(RhB)为目标降解物,研究溶剂对BiOBr的可见光催化性能的影响.实验结果表明,采用EG为溶剂的BiOBr在可见光降解RhB中表现出最佳的降解效果,因其较采用HNO_3、GL和PVP为溶剂的样品具有更高I_((001))/I_((102)),更小的禁带宽度和更均一的纳米片形貌.此外,阐述了溶剂对光催化降解RhB的影响机理.
[Abstract]:BiOBr samples with different morphologies were synthesized by hydrothermal method. The crystal shape, morphology, pore size distribution and specific surface area of BiOBr samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption and desorption curve and UV-Vis DRS. The effect of solvent on the visible light catalytic performance of BiOBr was studied with Rhodamine Bhb as the target degradation material. The experimental results showed that BiOBr with EG as solvent showed the best degradation effect in visible light degradation of RhB. As compared with the samples using HNO3GL and PVP as solvent, it has higher I / T / I / I / T, smaller band gap and more uniform morphology. In addition, the influence mechanism of solvent on photocatalytic degradation of RhB is described.
【作者单位】：辽宁石油化工大学化学化工与环境学部;
【基金】：工业生态与环境工程教育部重点实验室的资助(KLIEEE-13-03)~~
【分类号】：O643.36

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