Enhancement of Photocatalytic activity of γ- Bi2MoO6 with Graphite flake under Visible light irradiation

IOSR Journal of Applied Chemistry Pub Date : 2017-07-01 DOI:10.9790/5736-1007011117

Lavakusa Banavatu, A. Ramesh, N. Rao, K. Basavaiah

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引用次数: 2

Abstract

The influences of the various preparation parameters (including the pH value, reaction temperature, and holding time) on the phase formation and morphology development were investigated in detail. Graphite was observed on the surface of γBi2MoO6 after the co-precipitation and calcination treatment. The synthesized Bi2MoO6 –Graphite flake composite nanoparticles (NP’s) were characterized with X-ray diffraction (XRD) for identify crystalline phases and particle size, Raman spectroscopy is identify active species during the reaction, UV-Visible diffuse reflectance spectroscopy (UV-DRS) revealed for band energy of semiconductors, Field emission scanning electron microscopy(FE-SEM) to determine morphology and shape of supported particles and Energy dispersive X-ray analysis (EDX) for elemental analysis of synthesized nanoparticles. The photocatalytic activity of Bi2MoO6 catalyst was evaluated using the degradation of Methylene blue under Visible light irradiation at room temperature. A remarkable enhancement in the visible photo light activity was observed over the Bi2MoO6-Graphite composite compared to pure Bi2MoO6.

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石墨片增强γ- Bi2MoO6在可见光下的光催化活性

考察了不同制备参数(pH值、反应温度、保温时间)对相形成和形貌发展的影响。经共沉淀和煅烧处理后，γ - bi2moo6表面出现了石墨。利用x射线衍射(XRD)对合成的 Bi2MoO6 -石墨片状复合纳米颗粒(NP 's)进行了表征，确定了晶体相和粒径，拉曼光谱(Raman)鉴定了反应过程中的活性物质，紫外-可见漫反射光谱(UV-DRS)揭示了半导体的能带能。利用场发射扫描电子显微镜(FE-SEM)测定支撑粒子的形态和形状，利用能量色散x射线分析(EDX)对合成的纳米颗粒进行元素分析。在室温可见光照射下对亚甲基蓝进行降解，评价了 Bi2MoO6催化剂的光催化活性。与纯Bi2MoO6相比，在Bi2MoO6-石墨复合材料上观察到可见光活性的显著增强。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IOSR Journal of Applied Chemistry

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