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Reduced graphene oxide-based photocatalysts containing Ag nanoparticles on a Ti[O.sub.2] nanotube array

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

Journal of Materials Science, Sept 15, 2013, Vol.48(18), p.6203(9) [Tạp chí có phản biện]

ISSN: 0022-2461

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  • Nhan đề:
    Reduced graphene oxide-based photocatalysts containing Ag nanoparticles on a Ti[O.sub.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, Sept 15, 2013, Vol.48(18), p.6203(9)
  • Mô tả: A simple one-step electrochemical deposition method was demonstrated to fabricate reduced graphene oxide/Ag nanoparticle co-decorated Ti[O.sub.2] nanotube arrays (RGO/Ag-Ti[O.sub.2]NTs) photocatalyst in this study. The structures and properties of these photocatalysts were characterized using scanning electron microscope, X-ray diffraction, UV-V is diffuse reflection spectra, and photoluminescence. By taking the advantages of Ti[O.sub.2], graphene, and Ag nanoparticles (AgNPs), RGO/Ag-Ti[O.sub.2]NTs showed a greatly improved photocatalytic activity compared with the bare Ti[O.sub.2]NTs, Ag-Ti[O.sub.2]NTs or RGO-Ti[O.sub.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

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