期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 241, 期 -, 页码 323-330出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2012.09.050
关键词
TiO2 nanotube array; Graphene; Ag nanoparticles; 2,4-Dichlorophenoxyacetic acid; Photocatalytic degradation
资金
- National Natural Science Foundation of China [51078129, 51178173, 51202065]
- Program for New Century Excellent Talents in University [11-0126]
- National Basic Research Program of China [2009CB421601]
A new photocatalyst, Ag nanoparticles (NPs) and reduced graphene oxide (RGO) co-decorated TiO2 nanotube arrays (NTs) (Ag/RGO-TiO2 NTs), was designed and facilely produced by combining electrodeposition and photoreduction processes. The structures and properties of the photocatalysts were characterized. The ternary catalyst exhibited almost 100% photocatalytic removal efficiency of typical herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) from water under simulated solar light irradiation. The photodegradation rate toward 2,4-D over Ag/RGO-TiO2 NTs is 11.3 times that over bare TiO2 NTs. After 10 successive cycles with 1600 min of irradiation, Ag/RGO-TiO2 NTs maintained as high 2,4-D removal efficiency as 97.3% with excellent stability and easy recovery, which justifies the photocatalytic system a promising application for herbicide removal from water. (C) 2012 Elsevier B.V. All tights reserved.
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