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01.02.2014 | Research Paper

Construction of Au@TiO₂/graphene nanocomposites with plasmonic effect and super adsorption ability for enhanced visible-light-driven photocatalytic organic pollutant degradation

verfasst von: Xueming Dang, Xiufang Zhang, Zhaoyuan Lu, Zuozheng Yang, Xiaoli Dong, Xinxin Zhang, Chun Ma, Hongchao Ma, Mang Xue, Fei Shi

Erschienen in: Journal of Nanoparticle Research | Ausgabe 2/2014

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Abstract

Au@TiO₂/graphene (Gr) composite with visible-light response was fabricated. The prepared samples were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscope, and diffuse reflection spectroscopy, respectively. The results indicated that metallic Au nanoparticles with round shape and about 10 nm in size were loaded on TiO₂ particles uniformly, and Au@TiO₂ was grafted on Gr shaped in thin and big sheets. Photocatalytic degradation of 2,4-dichlorophenol (2,4-DCP) was conducted under the visible-light irradiation (>420 nm) in order to evaluate the activity of photocatalysts. The light absorption spectrum of TiO₂ was extended to visible-light region by loading Au nanoparticles with plasmonic effect and 2,4-DCP could be degraded with Au@TiO₂ and Au@TiO₂/Gr by photocatalysis under visible light. Compared to that with Au@TiO₂, the elimination rate of 2,4-DCP was increased with Au@TiO₂/Gr. This enhanced photocatalytic performance was attributed to the concentration effect due to the improved adsorption performance introduced by Gr.

Vorheriger Artikel Optimization of Ce0.6Zr0.4−x Al1.3x O2 solid solution based on oxygen storage capacity

Nächster Artikel Investigation of gas sensing materials tin oxide nanofibers treated by oxygen plasma

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Titel: Construction of Au@TiO2/graphene nanocomposites with plasmonic effect and super adsorption ability for enhanced visible-light-driven photocatalytic organic pollutant degradation
verfasst von: Xueming Dang
Xiufang Zhang
Zhaoyuan Lu
Zuozheng Yang
Xiaoli Dong
Xinxin Zhang
Chun Ma
Hongchao Ma
Mang Xue
Fei Shi
Publikationsdatum: 01.02.2014
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 2/2014
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-013-2215-z

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