Bi24Br10+xAg x O31 nanostructure, a new reusable photocatalyst for efficient removal of Acid Blue 92 from model wastewaters under visible light

IF 2.1 4区 化学 Q3 CHEMISTRY, PHYSICAL
M. Padervand, E. Jalilian
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引用次数: 1

Abstract

Bi24Br10+xAg x O31 nanosheets were prepared by a facile single-step co-precipitation method in the presence of 1-butyl-3-methylimidazolium bromide ionic liquid as the bromide source and template agent. The products were well characterized by X-ray powder diffraction, scanning electron microscopy, energy-dispersive X-ray analysis, diffuse reflectance spectroscopy, nitrogen adsorption–desorption isotherms using Brunauer–Emmett–Teller analysis, Fourier transform infrared spectroscopy and transmission electron microscopy. The X-ray powder diffraction pattern confirmed the presence of both Bi24O31Br10 and AgBr crystalline phases in the structure. In addition, the scanning electron microscopy micrographs and transmission electron microscopy image indicated that the sample had sheet-like morphology and the thickness of the sheets was below 100 nm. According to the photocatalytic experiments, the product was exceptionally efficient for the degradation of Acid Blue 92 solutions under visible light. Also, the results of recycling experiments indicated the high capacity of the prepared nanosheets to effect repeated treatment of the wastewater solution, which is of great importance in being introduced as a catalyst in practical applications.
Bi24Br10+xAg x O31纳米结构,一种新型可重复使用光催化剂,可在可见光下有效去除模型废水中的酸性蓝92
以1-丁基-3-甲基咪唑溴离子液体为溴化物源和模板剂,采用单步共沉淀法制备了Bi24Br10+xAg x O31纳米片。通过x射线粉末衍射、扫描电镜、能量色散x射线分析、漫反射光谱、布鲁诺尔-埃米特-泰勒分析、傅里叶变换红外光谱和透射电镜对产物进行了表征。x射线粉末衍射图证实了结构中存在Bi24O31Br10和AgBr两种晶相。此外,扫描电镜和透射电镜图像显示,样品具有片状形貌,片状厚度在100 nm以下。根据光催化实验,该产品在可见光下对酸性蓝92溶液的降解非常有效。回收实验结果表明,制备的纳米片具有较高的重复处理能力,对实际应用具有重要意义。
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来源期刊
CiteScore
2.10
自引率
0.00%
发文量
5
审稿时长
2.3 months
期刊介绍: The journal covers the fields of kinetics and mechanisms of chemical processes in the gas phase and solution of both simple and complex systems.
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