Zhao YB, Zhang DW, Shi WF, Wang F (2007) A gamma-ray irradiation reduction route to prepare rod-like Ag2S nanocrystallines at room temperature. Materials Letters 61(14-15), 3232-3234. [In English]

Web link: http://dx.doi.org/10.1016/j.matlet.2006.11.039

Keywords:

nanomaterials; semiconductors; crystal growth; nanorods; hollow

Abstract: Rod-hke Ag2S nanocrystallines have successfully been synthesized by using Na2S2O3 as a chalcogen source in an aqueous solution via gamma-ray irradiation at room temperature. The lattice constants of 0.41 nm, 0.68 nm, and 0.77 nm for the monoclinic Ag2S phase were obtained from X-ray powder diffraction pattern. The nanorods have nonuniform diameters in the range of 200 to 500 nm and lengths of up to several ten micrometers. The band gap of Ag2S nanorods calculated from the UV-Vis spectrum is 2.34 eV, showing an obvious blue shift in UV-Vis absorption. (c) 2006 Elsevier B.V. All rights reserved.