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Facile and controllable one-step fabrication of selenium nanoparticles assisted by l-cysteine
- Source :
-
Materials Letters . Mar2010, Vol. 64 Issue 5, p614-617. 4p. - Publication Year :
- 2010
-
Abstract
- Abstract: A simple and solution-phase approach for large-scale synthesis of selenium nanoparticles (Nano-Se) by reducing sodium selenite (Na2SeO3) with l-cysteine has been demonstrated in this study. l-cysteine was used as both the reducing agent and surface modifier to control the formation of Nano-Se. The effects of reactant concentrations and ratios, and reaction time on the size and stability of Nano-Se were also investigated. The morphology and chemical composition of Nano-Se were characterized using various spectroscopic and microscopic methods. The results showed that varying the concentration ratio of l-cysteine to Na2SeO3 could control the diameter and morphology of Nano-Se, but not affecting their crystalline phases and chemical compositions. Monodisperse and homogeneous spherical Nano-Se with an average diameter of about 100nm could be synthesized with the concentration ratio of l-cysteine to Na2SeO3 at 4:1. A striking feature of the as-synthesized Nano-Se was their good stability when dispersed in the reaction solutions, which indicates their potential in medical applications. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 64
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 47608893
- Full Text :
- https://doi.org/10.1016/j.matlet.2009.12.019