Sonochemical synthesis of solar-light-driven Ag虋-PbMoO₄ photocatalyst

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• 作者：Gobinda Gyawali ; Rajesh Adhikari ; Bhupendra Joshi ; Tae Ho Kim ; Vicente Rodr铆guez-Gonz谩lez ; Soo Wohn Lee
• 关键词：Ag虋-PbMoO4 ; Photocatalyst ; Sonochemical synthesis ; Surface Plasmon Resonance
• 刊名：Journal of Hazardous Materials
• 出版年：15 December, 2013
• 年：2013
• 卷：263
• 期：part_P1
• 页码：45-51
• 全文大小：2078 K

文摘

Ag虋-PbMoO₄ photocatalysts were synthesized by facile sonochemical method with different mol.% of Ag nanoparticles dispersed on the surface of PbMoO₄. The synthesized powders were characterized by X-ray Diffraction (XRD) Spectroscopy, X-Ray Photoelectron Spectroscopy (XPS), Transmission Electron Microscopy (TEM), and Diffuse Reflectance Spectroscopy (UV-vis DRS) to investigate the crystal structure, morphology, chemical composition, and optical properties of the photocatalyst. Photocatalytic activities of the Ag虋-PbMoO₄ samples were evaluated by the degradation of Indigo Carmine (IC) dye under simulated solar light irradiation. It has been observed that the sample containing 0.3 mol.% of Ag showed the best photocatalytic activity as compared to other samples. The results suggest that the dispersion of Ag nanoparticles on the surface of PbMoO₄ significantly enhances the photocatalytic activity of PbMoO₄. Increase in photocatalytic activity of Ag虋-PbMoO₄ photocatalyst has been explained on the basis of surface plasmon resonance (SPR) effect caused by the silver nanoparticles present in the photocatalyst.