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Reduced graphene oxide-based photocatalysts containing Ag nanoparticles on a TiO 2 nanotube array

Wang, Yao ; Tang, Yanhong ; Chen, Yao ; Li, Yue ; Liu, Xuanneng ; Luo, Shenglian ; Liu, Chengbin

Journal of Materials Science, 2013, Vol.48(18), pp.6203-6211 [Tạp chí có phản biện]

ISSN: 0022-2461 ; E-ISSN: 1573-4803 ; DOI: 10.1007/s10853-013-7417-3

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  • Nhan đề:
    Reduced graphene oxide-based photocatalysts containing Ag nanoparticles on a TiO 2 nanotube array
  • Tác giả: Wang, Yao ; Tang, Yanhong ; Chen, Yao ; Li, Yue ; Liu, Xuanneng ; Luo, Shenglian ; Liu, Chengbin
  • Chủ đề: Nanoparticles ; Graphene ; Graphite ; Photoluminescence ; Nanotubes
  • Là 1 phần của: Journal of Materials Science, 2013, Vol.48(18), pp.6203-6211
  • Mô tả: A simple one-step electrochemical deposition method was demonstrated to fabricate reduced graphene oxide/Ag nanoparticle co-decorated TiO 2 nanotube arrays (RGO/Ag–TiO 2 NTs) photocatalyst in this study. The structures and properties of these photocatalysts were characterized using scanning electron microscope, X-ray diffraction, UV–Vis diffuse reflection spectra, and photoluminescence. By taking the advantages of TiO 2 , graphene, and Ag nanoparticles (AgNPs), RGO/Ag–TiO 2 NTs showed a greatly improved photocatalytic activity compared with the bare TiO 2 NTs, Ag–TiO 2 NTs or RGO–TiO 2 NTs. The deposited RGO and AgNPs not only reduce the recombination of photogenerated electrons and holes, but also increase the surface area of the catalyst. Both photocatalytic performance and adsorptivity of the catalyst have been improved. The ternary photocatalyst exhibited over 93 % removal efficiency of typical herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) under simulated solar light irradiation with good stability and easy recovery, which justifies the photocatalytic system, a promising application for herbicide or other organic pollutant removal from water.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0022-2461 ; E-ISSN: 1573-4803 ; DOI: 10.1007/s10853-013-7417-3

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