Microwave-Assisted Synthesis and Photocatalytic Activity of Thiourea-Modified ZnO Nanoparticles

Abstract:

Thiourea-modified ZnO nanoparticles were prepared by the microwave-assisted method. The nanoparticles were characterized by X-ray diffraction (XRD), High-resolution transmission electron microscope (TEM), UV-Vis absorption spectroscopy (UV-Vis) and X-ray photoelectron spectroscopy (XPS). ZnO nanoparticles presented typical wurtzite structure. Microwave-assisted method and thiourea modifying reduced the particle size of ZnO corporately and the particle size of 2.0 mol% thiourea/ZnO was about 3 nm. The photocatalytic efficiency of thiourea-modified ZnO was influenced by the molar precent between thiourea and ZnO and 2.0 mol% thiourea/ZnO had the highest photocatalytic activity. The degradation rate of 30 mg/L C.I. Reactive Blue 4 could get to 85% in 50 min at room temperature when the concentration of 2.0 mol% thiourea/ZnO was 0.10 g/L.

• Periodical: Advanced Materials Research (Volume 815)
• Pages: 133-141
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.815.133
• Online since: October 2013
• Authors: Hai Feng Zhang, Shi Xiang Lu, Wen Guo Xu, Feng Xin Gao
• Keywords: Microwave-Assisted, Photocatalyst, Thiourea-Modified, ZNO

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