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Two-dimensional (2D) materials have attracted great attention recently. SnS/SnS 2 with sheet-like morphologies are widely used in photoelectric devices because of their excellent electronic transportation properties. In our study, by changing the mole ratios of SnCl 2 and C 2 H 5 NS at reaction temperatures as high as 280−300 °C, SnS rectangular nanosheets are converted successfully to SnS 2 hexagonal nanosheets with a one-pot method. SEM, XRD, Raman, and XPS analyses were utilized to examine the physical properties of the final products. Diffuse reflection spectra and PL spectra determined the bandgaps of SnS/SnS 2 to be about 1.49 and 2.19 eV, respectively. The photoelectric characteristics of SnS/SnS 2 nanosheets were also studied. FTO/SnS/SnS 2 / Pt photocathode was fabricated to enhance the photocurrent densities. Photocurrent densities as high as 26.7 μA/cm 2 were achieved.

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