title: Monodisperse SnS₂ nanosheets for high-performance photocatalytic hydrogen generation.
abstract: Graphene-like two-dimensional layered materials have attracted quite a lot of interest because of their sizable band gaps and potential applications. In this work, monodisperse tin disulfide (SnS2) nanosheets were successfully prepared by a simple solvothermal procedure in the presence of polyvinylpyrrolidone (PVP). Large PVP molecules absorbing on (001) facets of SnS2 would inhibit crystal growth along [001] orientation and protect the product from agglomeration. The obtained SnS2 nanosheets have diameters of ca. 0.8-1 μm and thicknesses of ca. 22 nm. Different experiment parameters were carried out to investigate the transformation of phase and morphology. The formation mechanism was proposed according to the time-dependent experiments. SnS2 nanosheets exhibit high photocatalytic H2 evolution activity of 1.06 mmol h(-1) g(-1) under simulated sunlight irradiation, much higher than that of SnS2 with different morphologies and P25-TiO2. Moreover, the as-obtained SnS2 nanosheets show excellent photoelectrochemical response performance in visible-light region.
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology , Harbin 150001, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Yu
authors.forename: Cheng-Yan
authors.initials: CY
authors.lastname: Xu
authors.forename: Fei-Xiang
authors.initials: FX
authors.lastname: Ma
authors.forename: Sheng-Peng
authors.initials: SP
authors.lastname: Hu
authors.forename: Yu-Wei
authors.initials: YW
authors.lastname: Zhang
authors.forename: Liang
authors.initials: L
authors.lastname: Zhen
keywords: nanosheets; photocatalytic hydrogen evolution; photoelectrochemical response; solvothermal; tin disulfide