期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 105, 期 -, 页码 335-341出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2013.01.010
关键词
Silver nanoparticles; Lignosulfonate; Lignin; Metal ion sensing
资金
- Ministry of Science and Higher Education (Poland) [N N209 450939]
Softwood lignosulfonate (SLS) was used as a reducing agent for one-step synthesis of silver nanoparticles (SLS-AgNPs) in an aqueous solution at room temperature. In this reaction SLS acts also as a stabilizing agent and as a result, stable colloids of silver nanoparticles are formed during the reaction with the average particle size of 41 nm. The obtained SLS-AgNPs were characterized by UV-vis spectrophotometry, size distribution and AFM imaging after casting on mica. Due to metal ion complexing capability of lignosulfonates, the SLS-AgNPs appeared to be capable of colorimetric detection of metal ions (especially nickel). Additionally, the SLS-AgNPs could be assembled into thin films on conducting substrates (ITO glass) using electrophoretic deposition. XPS spectroscopy was used to characterize such films and revealed a strong interaction of silver atoms with some carbon atoms of the SLS. (C) 2013 Elsevier B.V. All rights reserved.
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