Journal of Inorganic Materials ›› 2017, Vol. 32 ›› Issue (6): 637-642.doi: 10.15541/jim20160481

Special Issue: 环境材料

• Orginal Article • Previous Articles     Next Articles

High-efficient Synthesis and Photocatalytic Properties of Ag/AgBr/TiO2 Monolithic Photocatalysts Using Sodium Alginate as Substrate

Qin TONG1(), Ya-Mei DONG1, Liang YAN1, Dan-Nong HE1,2()   

  1. 1. National Engineering Research Center for Nanotechnology, Shanghai 200241, China
    2. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2016-08-29 Revised:2016-11-03 Online:2017-06-20 Published:2017-05-27
  • About author:TONG Qin. E-mail: tongqin_7557@163.com
  • Supported by:
    National Basic Research Program of China (2015CB931902);Shanghai Science and Technology Development Funds (16QB1402200)

Abstract:

SA-Ag/AgBr/TiO2 monolithic photocatalysts with uniform particle size distribution was synthesized by using sodium alginate as a substrate. Its structure and morphology were characterized by XRD, XPS, SEM, TEM, and HRTEM. The optical properties and the surface area of the SA-Ag/AgBr/TiO2 monolithic photocatalysts were characterized by FT-IR and BET. The as-prepared photocatalyst with good stability exhibited enhanced photocatalytic performance for degradation of RhB solution under both UV and visible light. The SA-Ag/AgBr/TiO2 monolithic photocatalyst with 12wt% Ag/AgBr/TiO2 display optimum properties i.e. about 100% degradation rate for the RhB solution for 60 min under UV irradiation and 54.1% degradation rate for the RhB solution under visible light irradiation for 120 min. Besides, after 5 cycles, the RhB degradation rate still keeps higher than 96%, showing an excellent reusability of the photocatalysts. The as-prepared SA-Ag/ AgBr/TiO2 monolithic photocatalysts may effectively solve the problems including photocatalytic activity, secondary pollution and photocatalyst recycling.

Key words: sodium alginate, Ag/AgBr/TiO2 photocatlyst, monolithic photocatalysts, visible light

CLC Number: 

  • O643