Controllable synthesis and photoelectric property of hexagonal SnS2 nanoflakes by Triton X-100 assisted hydrothermal method

Tin disulfide (SnS2) has attracted considerate interests due to its outstanding properties that stem from the unique crystalline structure. Herein, hexagonal SnS2 nanoflakes have been demonstrated to be synthesized via a facile, one-step hydrothermal method using SnCl2·H2O and thioacetamide as raw materials and Triton X-100 as a surfactant. Experimental results show that the as-synthesized SnS2 is hexagonal nanoflakes with lateral size of about 100 nm and the bandgap is from 2.136 to 2.289 eV. Moreover, the observations indicate that Triton X-100 plays a dominative role in controlling the morphology of SnS2, which can enable a viable route toward the controllable synthesis of SnS2 nanoflakes. Meanwhile, the photoelectric device based on the hexagonal SnS2 nanoflakes has been fabricated and exhibits a good photoelectric response under UV illumination.