Title |
Three strategies to stabilise nearly monodispersed silver nanoparticles in aqueous solution
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Published in |
Discover Nano, February 2012
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DOI | 10.1186/1556-276x-7-151 |
Pubmed ID | |
Authors |
Amadeus PZ Stevenson, Duani Blanco Bea, Sergi Civit, Sonia Antoranz Contera, Alberto Iglesias Cerveto, Sonia Trigueros |
Abstract |
Silver nanoparticles are extensively used due to their chemical and physical properties and promising applications in areas such as medicine and electronics. Controlled synthesis of silver nanoparticles remains a major challenge due to the difficulty in producing long-term stable particles of the same size and shape in aqueous solution. To address this problem, we examine three strategies to stabilise aqueous solutions of 15 nm citrate-reduced silver nanoparticles using organic polymeric capping, bimetallic core-shell and bimetallic alloying. Our results show that these strategies drastically improve nanoparticle stability by distinct mechanisms. Additionally, we report a new role of polymer functionalisation in preventing further uncontrolled nanoparticle growth. For bimetallic nanoparticles, we attribute the presence of a higher valence metal on the surface of the nanoparticle as one of the key factors for improving their long-term stability. Stable silver-based nanoparticles, free of organic solvents, will have great potential for accelerating further environmental and nanotoxicity studies.PACS: 81.07.-b; 81.16.Be; 82.70.Dd. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 3 | 2% |
France | 1 | <1% |
Sweden | 1 | <1% |
India | 1 | <1% |
Korea, Republic of | 1 | <1% |
Russia | 1 | <1% |
Spain | 1 | <1% |
Unknown | 131 | 94% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 46 | 33% |
Student > Master | 22 | 16% |
Researcher | 15 | 11% |
Student > Bachelor | 13 | 9% |
Professor | 7 | 5% |
Other | 21 | 15% |
Unknown | 16 | 11% |
Readers by discipline | Count | As % |
---|---|---|
Chemistry | 38 | 27% |
Agricultural and Biological Sciences | 23 | 16% |
Physics and Astronomy | 13 | 9% |
Materials Science | 11 | 8% |
Engineering | 8 | 6% |
Other | 28 | 20% |
Unknown | 19 | 14% |