Synthesis of faceted and cubic Ag2S nanocrystals in aqueous solutions

Lihong Dong; Ying Chu; Yang Liu; Lili Li

doi:10.1016/j.jcis.2007.09.055

Synthesis of faceted and cubic Ag2S nanocrystals in aqueous solutions

J Colloid Interface Sci. 2008 Jan 15;317(2):485-92. doi: 10.1016/j.jcis.2007.09.055. Epub 2007 Sep 25.

Authors

Lihong Dong¹, Ying Chu, Yang Liu, Lili Li

Affiliation

¹ Department of Chemistry, Northeast Normal University, Changchun, PR China 130024.

PMID: 17945251
DOI: 10.1016/j.jcis.2007.09.055

Abstract

With thiourea (Tu) as sulfur source and the assistance of CTAB, faceted and cubic Ag2S nanocrystals have been synthesized successfully via a simple hydrothermal route by modulating the ratio of Tu and AgNO3, respectively. It is the first report that the fabrication of faceted and cubic Ag2S nanocrystals takes place in aqueous medium, which makes the synthesis environmentally benign, user-friendly, economical and practicable to industry production. It is also found that the cooperation effect of CTAB and Tu should be responsible for the formation of the as-obtained Ag2S nanocrystals. The UV-vis absorption spectrum of the products shows obvious blue shift.