Journal Menu
PHOTOCATALYTIC DEGRADATION OF RhB OVER GRAPHENE-BASED Ag/AgBr COMPOSITES
Pages : [115] - [133]
Received : May 2, 2015; Revised June 9, 2015
Communicated by : Professor Konsalakis Michalis
Abstract
In this paper, a simple hydrothermal method was developed for the preparation of micro-nanocomposite rGO/Ag/AgBr using ascorbic acid as a reducing agent. It could completely decompose 
RhB under 250W UV light irradiation within 160 min. The catalytic activity was discovered to be strongly affected by the some operating parameters, such as solution pH, catalytic amount, and graphene doping amount. The possible photocatalytic mechanism of the rGO/Ag/AgBr composite was also discussed. Our results indicated that rGO nanosheets played a role of a highly efficient cocatalyst for the rapid transfer of photo generated electrons. rGO/Ag/AgBr photocatalysts exhibited highly efficient and stable photo degradation for RhB under UV irradiation.
Keywords
rGO/Ag/AgBr, photocatalytic, RhB, ascorbic acid, UV.