Fabrication of SnS <sub/>2</sub> /SnS Heterojunction with Enhanced Light-Assisted Electrochemical Water Splitting Performance

摘要： Semiconducting metal sul?des have raised strong research interest among researchers as a promising candidate for light-assisted electrochemical water splitting, because they have wide band gap. In order to harvest more light wavelengths for improvement of light-assisted electrochemical water splitting capacity, we fabricated SnS2/SnS heterojunction nanosheets via facile and environmental route. The SnS2/SnS heterojunction nanosheets were used as photo-electrocatalytic material which exhibited low over potential of ?0.64 V at the current density of 10 mA · cm?2 in 0.5 M NaSO4 solution. Moreover, the SnS and SnS2 nanosheets displayed high over potential values of ?0.80 and ?0.88 V at the current density of 10 mA · cm?2, respectively. This research ?nding may therefore show the potential for use of SnS2/SnS heterojunction nanosheets as low cost and environmentally friendly photo-electrocatalysis.