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Issue 34, 2017
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Construction and preparation of novel 2D metal-free few-layer BN modified graphene-like g-C3N4 with enhanced photocatalytic performance

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Abstract

Novel two-dimensional (2D) metal-free few-layer BN/graphene-like g-C3N4 (2D BN/g-C3N4) composites have been synthesized by a simple hydrothermal method. The construction of a 2D/2D structure between BN and g-C3N4 could shorten the migration distance of charge transfer, and provide a large contact surface. By introducing few-layer BN nanosheets into g-C3N4, the as-prepared 2D BN/g-C3N4 composites exhibited a much enhanced photocatalytic performance than that of pure g-C3N4. The 0.5% 2D BN/g-C3N4 composite possessed the most wonderful ability towards Rhodamine B (RhB) degradation irradiated by visible light, which could achieve a highest degradation efficiency of 98.2% within 120 min. Further studies revealed that modifying g-C3N4 with few-layer BN could not only facilitate the separation and transfer of photo-induced holes and electrons, but also exposed the fact that the (002) facet edges of BN terminated with –OH groups could act as catalytic sites, and thus enhance the photocatalytic activities. Moreover, the successful preparation of 2D BN/g-C3N4 composites may pave the way for fabricating other 2D composites with a layer-by-layer architecture.

Graphical abstract: Construction and preparation of novel 2D metal-free few-layer BN modified graphene-like g-C3N4 with enhanced photocatalytic performance

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Publication details

The article was received on 08 Jun 2017, accepted on 17 Jul 2017 and first published on 17 Jul 2017


Article type: Paper
DOI: 10.1039/C7DT02092A
Citation: Dalton Trans., 2017,46, 11250-11258
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    Construction and preparation of novel 2D metal-free few-layer BN modified graphene-like g-C3N4 with enhanced photocatalytic performance

    J. Gu, J. Yan, Z. Chen, H. Ji, Y. Song, Y. Fan, H. Xu and H. Li, Dalton Trans., 2017, 46, 11250
    DOI: 10.1039/C7DT02092A

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