Stannite-type multicomponent sulfide (Ag2ZnSnS4) nanoparticles with particle diameters of 100-200 nm were synthesized through a solvothermal treatment combined with a post-annealing process under N 2 atmosphere. The obtained Ag2ZnSnS4 was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), UV-vis diffuse reflectance spectroscopy (DRS) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activities for hydrogen production of Ag2ZnSnS 4 were evaluated under visible light (λ≥420 nm) irradiation...