In situ decoration of Ag nanoparticles on chitosan spheres with enhanced photo-catalytic activity

[摘要] In this study, Ag-decorated chitosan (Ag-chitosan) spheres were synthesized through in situ decoration of Ag nanoparticles (NPs) on the surface of chitosan spheres via a hydrothermal route. Chitosan spheres were synthesized through emulsification of chitosan solution in the paraffin oil followed by cross-linked with glutaraldehyde. They were then soaked in the solution of AgNO3 and subject to a hydrothermal treatment at 120°C to produce Ag-chitosan spheres. SEM observation showed that the Ag-chitosan spheres were spherical in shape with the diameter of 5-20 μm. An EDS spectrum showed that the Ag-chitosan spheres were rich in C, O, and Ag elements. After incubation in the solution of 4-nitrophonol and NaBH4, Ag-chitosan spheres showed good photo-catalytic activity for reduction of 4-nitrophonol.

[发布机构] College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi; 030024, China^1

[效力级别] 无线电电子学

[关键词] Chitosan solution;Glutaraldehydes;Hydrothermal routes;Hydrothermal treatments;Nanoparticle (NPs);Photocatalytic activities;SEM observation