Stable semiconductor black phosphorus (BP)@titanium dioxide (TiO2) hybrid photocatalysts

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Title
Stable semiconductor black phosphorus (BP)@titanium dioxide (TiO2) hybrid photocatalysts
Author(s)
H U Lee; S C Lee; J Won; B C Son; Saehae Choi; Y Kim; S Y Park; Hee-Sik Kim; Y C Lee; J Lee
Bibliographic Citation
Scientific Reports, vol. 5, pp. 8691-8691
Publication Year
2015
Abstract
Over the past few decades, two-dimensional (2D) and layered materials have emerged as new fields. Due to the zero-band-gap nature of graphene and the low photocatalytic performance of MoS 2, more advanced semiconducting 2D materials have been prompted. As a result, semiconductor black phosphorus (BP) is a derived cutting-edge post-graphene contender for nanoelectrical application, because of its direct-band-gap nature. For the first time, we report on robust BP@TiO 2 hybrid photocatalysts offering enhanced photocatalytic performance under light irradiation in environmental and biomedical fields, with negligible affected on temperature and pH conditions, as compared with MoS 2 @TiO 2 prepared by the identical synthesis method. Remarkably, in contrast to pure few layered BP, which, due to its intrinsic sensitivity to oxygen and humidity was readily dissolved after just several uses, the BP@TiO 2 hybrid photocatalysts showed a ∼92% photocatalytic activity after 15 runs. Thus, metal-oxide-stabilized BP photocatalysts can be practically applied as a promising alternative to graphene and MoS 2.
ISSN
2045-2322
Publisher
Springer-Nature Pub Group
DOI
http://dx.doi.org/10.1038/srep08691
Type
Article
Appears in Collections:
Division of Biomaterials Research > Cell Factory Research Center > 1. Journal Articles
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