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Evolution of hydrogen by few-layered black phosphorus under visible illumination
Energy Res Inst NTU, Res Techno Plaza,50 Nanyang Dr, Singapore 637553, Singapore..
Energy Res Inst NTU, Res Techno Plaza,50 Nanyang Dr, Singapore 637553, Singapore.;SRM Univ, Dept Phys & Nanotechnol, SRM Res Inst, Madras 603203, Tamil Nadu, India..
Nanyang Technol Univ, Sch Chem & Biomed Engn, 62 Nanyang Dr, Singapore 637459, Singapore..
Energy Res Inst NTU, Res Techno Plaza,50 Nanyang Dr, Singapore 637553, Singapore..
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2017 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 5, no 47, p. 24874-24879Article in journal (Refereed) Published
Abstract [en]

Recently, a new class of two-dimensional black phosphorus (BP) with a visible direct band gap is predicted as a potential candidate for photo-catalysis applications. Here, we present the first experimental evidence of hydrogen (H-2) evolution from aqueous solution by using BP (nanosheets and nanoparticles) under visible light illumination. Our experimental results describe that liquid phase exfoliated BP nanosheets and BP nanoparticles exhibit suitable energy level alignments for electron transfer and further proton reduction reactions in the solution under visible light illumination. Density functional theory (DFT) calculations predict that the H-2 evolution activity of bilayer BP is independent of edge or center positions, which is unique in BP as compared to those of other 2D materials.

Place, publisher, year, edition, pages
2017. Vol. 5, no 47, p. 24874-24879
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Materials Chemistry
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URN: urn:nbn:se:uu:diva-343894DOI: 10.1039/c7ta04889kISI: 000417063200039OAI: oai:DiVA.org:uu-343894DiVA, id: diva2:1187224
Available from: 2018-03-02 Created: 2018-03-02 Last updated: 2018-03-02Bibliographically approved

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Chakraborty, Sudip

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