Abstract The synthesis of visible-light photocatalyst Ag/Ag2O and its photocatalytic degradation performance for dye have been designed as an excellent comprehensive chemical experiment and its corresponding teaching plan was carefully introduced. Ag/Ag2O photocatalyst was prepared by a direct precipitation method to form Ag2O and then metallic Ag was in situ produced on the Ag2O surface under light irradiation owing to its self-decomposition property. The photocatalyst was characterized by field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD), and the decolorization experiment of methyl orange (MO) solution was employed to characterize the photocatalytic performance of Ag/Ag2O photocatalyst. The results showed that Ag/Ag2O photocatalyst exhibited excellent visible-light photocatalytic activity. The present experiment includes the basic knowledge of college chemistry and basic skills such as material synthesis and instrumental analysis, which is very important and necessary for students to improve their academic knowledge, innovative thinking and problem-solving skills.
XU Ying, YU Huo-Gen, MO Yan-Ping, SONG Jia, LI Yong-An. Preparation of Visible-Light Photocatalyst Ag/Ag2O and Its Degradation Performance for Dyes[J]. Chinese Journal of Chemical Education, 2016, 37(22): 26-29.