Decolorization of methylene blue by Ag/SrSnO3 composites under ultraviolet radiation

• Main Authors: Junploy P., Thongtem T., Thongtem S., Phuruangrat A.
• 格式: Article
• 語言: English
• 出版: Hindawi Publishing Corporation 2014
• 在線閱讀: http://www.scopus.com/inward/record.url?eid=2-s2.0-84904696762&partnerID=40&md5=fcf786a0d897bd4176f32659b85d554c; http://cmuir.cmu.ac.th/handle/6653943832/4902
• 機構: Chiang Mai University

SrSn(OH)6 precursors synthesized by a cyclic microwave radiation (CMR) process were calcined at 900°C for 3 h to form rod-like SrSnO 3. Further, the rod-like SrSnO3 and AgNO3 in ethylene glycol (EG) were ultrasonically vibrated to form rod-like Ag/SrSnO 3 composites, characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron microscopy (EM), Fourier transform infrared (FTIR) spectroscopy, and UV-visible analysis. The photocatalyses of rod-like SrSnO3, 1 wt%, 5 wt%, and 10 wt% Ag/SrSnO3 composites were studied for degradation of methylene blue (MB, C 16H18N3SCl) dye under ultraviolet (UV) radiation. In this research, the 5 wt% Ag/SrSnO3 composites showed the highest activity, enhanced by the electron-hole separation process. The photoactivity became lower by the excessive Ag nanoparticles due to the negative effect caused by reduction in the absorption of UV radiation. © 2014 Patcharanan Junploy et al.