Decolorization of methylene blue by Ag/SrSnO<inf>3</inf> composites under ultraviolet radiation

• Main Authors: Patcharanan Junploy, Titipun Thongtem, Somchai Thongtem, Anukorn Phuruangrat
• Format: Journal
• Published: 2018
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84904696762&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/45526
• Institution: 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 SrSnO 3 and AgNO 3 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 SrSnO 3 , 1 wt%, 5 wt%, and 10 wt% Ag/SrSnO 3 composites were studied for degradation of methylene blue (MB, C 16 H 18 N 3 SCl) dye under ultraviolet (UV) radiation. In this research, the 5 wt% Ag/SrSnO 3 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.