光催化
X射线光电子能谱
高分辨率透射电子显微镜
材料科学
傅里叶变换红外光谱
漫反射红外傅里叶变换
共沉淀
化学工程
扫描电子显微镜
光致发光
催化作用
透射电子显微镜
纳米技术
化学
复合材料
有机化学
光电子学
工程类
作者
Xiaoming Sun,Jia Lü,Jiang Wu,Dayong Guan,Qizhen Liu,Naiqiang Yan
标识
DOI:10.1016/j.jcis.2019.03.049
摘要
A one-pot synthetic approach to prepare self-assembled BiOI/BiOCl microflowers by a template-free coprecipitation method at room temperature has been developed. The physicochemical structure of BiOI/BiOCl microflowers were characterized using transmission electron microscopy (TEM), high resolution TEM (HRTEM), scanning electron microscopy (SEM). The composition information and bonding energy structure of the BiOI/BiOCl microflowers were studied by X-ray diffraction (XRD) and high-resolution X-ray photoelectron spectra (XPS), Fourier Transform Infrared Spectroscopy (FTIR), UV-vis diffuse reflectance spectroscopy (DRS) analysis and photoluminescence (PL) spectra. The photocatalytic performance of as-prepared BiOI/BiOCl microflowers was tested through photocatalytic oxidation of gas-phase mercury, as a useful catalyst (or additive) in wet electrostatistic precipitator (WESP) to capture heavy metals including mercury. The results show that the prepared BiOI/BiOCl samples demonstrate higher photocatalytic efficiency than pure BiOI or BiOCl. By optimizing the component ratio of the BiOI and BiOCl, up to 72.2% oxidation efficiency can be achieved in BiOI/BiOCl microflowers. Finally, the photocatalytic influence of BiOI/BiOCl microflowers on gas-phase mercury oxidation had been proposed.
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