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Antiphotocorrosive photocatalysts containing CdS nanoparticles and exfoliated TiO2 nanosheets

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Abstract

Aimed at designing an efficient visible light active photocatalyst and suppressing the self-corrosion tendency of CdS nanoparticles, a novel composite consisting of CdS nanoparticles and exfoliated two-dimensional (2D) TiO2 nanosheets was successfully fabricated using a simple self-assembly process. The prepared samples were characterized using various techniques including x-ray diffraction, ultraviolet–visible absorption spectroscopy, x-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. It was found that the exfoliated 2D nanosheets played an important role as an ultrathin coating to suppress the photocorrosion of CdS nanoparticles, evidenced by inductively coupled plasma-atomic emission spectrometer analysis. The resultant CdS/TiO2 composites exhibited enhanced photocatalytic activity in the oxidation of Rhodamine B in water under visible light irradiation (λ > 420 nm).

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Authors and Affiliations

  1. Australian Research Council (ARC) Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering and Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Qld, 4072, Australia

    Xiaoxia Yan, Gang Liu, Lianzhou Wang, Yong Wang & Gao Qing (Max) Lu

  2. School of Engineering, The University of Queensland, Qld, 4072, Australia

    Lianzhou Wang, Yong Wang & Jin Zou

  3. China-Australia Joint Laboratory for Functional Nanomaterials, Department of Physics, Xiamen University, Xiamen, 361005, China

    Xianfang Zhu

Authors
  1. Xiaoxia Yan
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  2. Gang Liu
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  3. Lianzhou Wang
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  4. Yong Wang
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  5. Xianfang Zhu
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  6. Jin Zou
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  7. Gao Qing (Max) Lu
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Correspondence to Lianzhou Wang.

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Yan, X., Liu, G., Wang, L. et al. Antiphotocorrosive photocatalysts containing CdS nanoparticles and exfoliated TiO2 nanosheets. Journal of Materials Research 25, 182–188 (2010). https://doi.org/10.1557/JMR.2010.0007

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  • DOI: https://doi.org/10.1557/JMR.2010.0007

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