BN nanosheets modified WO3 photocatalysts for enhancing photocatalytic properties under visible light irradiation

BN nanosheets modified WO3 photocatalysts for enhancing photocatalytic properties under visible light irradiation
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BN纳米片修饰WO3光催化剂增强可见光照射下的光催化性能

DOI:
10.1016/j.jallcom.2015.11.042
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发表时间:
2016-03
影响因子:
6.2
通讯作者:
Li Huaming
Li Huaming
中科院分区:
材料科学2区
文献类型:
--
作者:
Xu Hui;Liu Liang;Song Yanhua;Huang Liying;Li Yeping;Chen Zhigang;Zhang Qi;Li Huaming

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采用焙烧法制备了BN/WO_3杂化材料,并用X-射线衍射仪(XRD)、X-射线光电子能谱(XPS)、紫外-可见漫反射光谱(DRS)、傅立叶变换红外光谱(FT-IR)对其进行了表征。以罗丹明B(RhB)为目标有机污染物,评价了BN/WO_3杂化材料的光催化活性。研究结果表明,该复合材料具有比纯WO_3更高的光催化活性,少量的BN有利于光生电子和空穴的分离,从而提高了BN/WO_3的光催化活性。根据实验结果,提出并讨论了一种可能的可见光催化降解机理。
The BN/WO3hybrid materials were synthesized by the calcined method and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy (DRS), Fourier transform infrared spectra (FT–IR). The photocatalytic activity of BN/WO3hybrid materials was evaluated using Rhodamine B (RhB) as the target organic pollutant. The research results showed that the composites exhibited higher photocatalytic activity than the pure WO3, and a small amount of BN was beneficial for photogenerated electron and hole separation, which could enhance the photoactivity of BN/WO3. Based on the experimental results, a possible visible-light photocatalytic degradation mechanism was also proposed and discussed.
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