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Issue 8, 2011
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Synthesis of visible-light responsive Sn-SnO2/C photocatalyst by simple carbothermal reduction

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Abstract

Sn-SnO2/C photocatalysts with visible light activity have been successfully synthesized by a simple heat-treating process using SnCl4 as precursor. The Sn-SnO2 heterojunction is built by depositing of metallic Sn on crystal lattice oxygen of as-formed SnO2, which obviously increase the amount of adsorbed oxygen on the surface of catalyst. The as-synthesized catalysts display higher photocatalytic activity than SnO2 and SnO2/C for degradation of reactive brilliant blue KN-R under visible light irradiation. The enhancement of photocatalytic performance of Sn-SnO2/C can be attributed to the formation of metallic Sn on the surface of catalysts. The metallic Sn and adsorbed oxygen as the sinks of photoinduced electron and electronic scavenges, respectively, hinder the recombination of photoexcitated electron-hole pairs, sequentially enhance the photocatalytic activity. Furthermore, a possible growth mechanism of the Sn-SnO2/C photocatalysts was proposed.

Graphical abstract: Synthesis of visible-light responsive Sn-SnO2/C photocatalyst by simple carbothermal reduction

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Publication details

The article was received on 26 Jan 2011, accepted on 03 May 2011 and first published on 15 Jun 2011


Article type: Paper
DOI: 10.1039/C1EE01095F
Citation: Energy Environ. Sci., 2011,4, 3067-3074
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    Synthesis of visible-light responsive Sn-SnO2/C photocatalyst by simple carbothermal reduction

    H. Ma, K. Teng, Y. Fu, Y. Song, Y. Wang and X. Dong, Energy Environ. Sci., 2011, 4, 3067
    DOI: 10.1039/C1EE01095F

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