“…In the recent several years, many methods have been exploited to prepare nanostructured Bi 2 S 3 with different morphologies, such as ultrasonic chemistry method [10], microwave-assisted route [11,12], photochemical synthesis method [13,14], high temperature thermal decomposition of single-source precursors [15,16], ionic liquid-assisted templating route [17], hydrothermal [18,19] and solvothermal methods [20][21][22]. However, most of the techniques mentioned above need relatively higher temperature and pressure, or the preparation procedures are complex.…”