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Issue 53, 2018, Issue in Progress
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Doubling the photocatalytic performance of SnO2 by carbon coating mixed-phase particles

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Abstract

In this work, carbon-coated mixed-phase (tetragonal/orthorhombic) SnO2 photocatalysts were successfully fabricated with a chemical precipitation method, followed by a facile hydrothermal process. This material exhibits the highest activity during photocatalytic methyl orange and phenol degradation, and the degradation rate constant is almost 3 times than that of pure tetragonal SnO2. The enhancement of photocatalytic activity could be mainly attributed to the synergistic effect among tetragonal SnO2, orthorhombic SnO2 and carbon (serves as a charge transfer mediator), which was found to lead to more efficient separation of photogenerated electron–hole pairs. Phase junctions in mixed-phase SnO2 were beneficial to the separation of photogenerated electrons and holes and carbon further facilitated the charge transfer between tetragonal and orthorhombic SnO2 nanoparticles. This study may provide a method for other mixed-phase semiconductors with promising performance for potential applications in environmental protection.

Graphical abstract: Doubling the photocatalytic performance of SnO2 by carbon coating mixed-phase particles

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Publication details

The article was received on 03 May 2018, accepted on 21 Aug 2018 and first published on 28 Aug 2018


Article type: Paper
DOI: 10.1039/C8RA03794A
RSC Adv., 2018,8, 30366-30373
  • Open access: Creative Commons BY-NC license
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    Doubling the photocatalytic performance of SnO2 by carbon coating mixed-phase particles

    Q. Li, H. Zhao, H. Sun, X. Zhao and W. Fan, RSC Adv., 2018, 8, 30366
    DOI: 10.1039/C8RA03794A

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