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Colloidal synthesis of SnS nanocrystals with dimension-dependent photoelectrochemical properties

Abstract

A crucial obstacle to photoelectrochemical (PEC) water splitting is the scarcity of p-type photocathodes with superior charge separation ability. Nanocrystals with well-defined anisotropic shapes offer an exciting opportunity for tailoring PEC performance of semiconductors. In this paper, varied SnS nanostructures with different dimensions were controllably synthesized using a colloidal injection method. Through controlling the roles of 1-Dodecanethiol (DDT) and thioacetamide for nanocrystal nucleation and growth, different morphologies of SnS nanostructures were fabricated. 0-D SnS nanoparticles (NPs) were fabricated by hot-injection method, while temperature-controlled cool-injection facilitated the formation of 1-D SnS nanorods (NRs) and 2-D SnS nanosheets (NSs). Due to the efficient charge transfer and separation, photocathodes fabricated from 1-D nanorods exhibited much superior activity than 0-D nanoparticles and 2-D nanosheets. Our research demonstrates the enormous potential of dimensional tailoring of anisotropic SnS nanostructures for PEC activity.

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Publication details

The article was received on 28 Jan 2019, accepted on 08 Apr 2019 and first published on 09 Apr 2019


Article type: Paper
DOI: 10.1039/C9NJ00506D
Citation: New J. Chem., 2019, Accepted Manuscript

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    Colloidal synthesis of SnS nanocrystals with dimension-dependent photoelectrochemical properties

    Y. Wu, T. Wei, X. An and L. Liu, New J. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9NJ00506D

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