Green synthesis of highly concentrated aqueous colloidal solutions of large starch-stabilised silver nanoplatelets

Cheng, Fei; Betts, Jonathan W.; Kelly, Stephen M.; Hector, Andrew L.

Abstract

© 2014 Elsevier B.V. All rights reserved. A simple, environmentally friendly and cost-effective method has been developed to prepare a range of aqueous silver colloidal solutions, using ascorbic acid as a reducing agent,water-soluble starch as a combined crystallising, stabilising and solubilising agent, and water as the solvent. The diameter of silver nanoplatelets increases with higher concentrations of AgNO 3 and starch. The silver nanoparticles are also more uniform in shape the greater the diameter of the nanoparticles. Colloidal solutions with a very high concentration of large, flat, hexagonal silver nanoplatelets (∼230 nm in breadth) have been used to deposit and fix an antibacterial coating of these large starch-stabilised silver nanoplates on commercial cotton fibres, using a simple dip-coating process usingwater as the solvent, in order to study the dependence of the antibacterial properties of these nanoplatelets on their size.

Citation

Cheng, F., Betts, J. W., Kelly, S. M., & Hector, A. L. (2015). Green synthesis of highly concentrated aqueous colloidal solutions of large starch-stabilised silver nanoplatelets. Materials Science and Engineering: C, 46, 530-537. https://doi.org/10.1016/j.msec.2014.10.041

• Acceptance Date: Oct 20, 2014
• Online Publication Date: Oct 23, 2014
• Publication Date: Jan 15, 2015
• Deposit Date: May 12, 2016
• Publicly Available Date: May 12, 2016
• Journal: Materials science and engineering : C
• Print ISSN: 0928-4931
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 46
• Pages: 530-537
• DOI: https://doi.org/10.1016/j.msec.2014.10.041
• Keywords: Silver; Nanoplatelets; Seed-mediated synthesis; Aqueous colloidal solutions; Antibacterial textiles; Water soluble starch; Green chemistry
• Public URL: https://hull-repository.worktribe.com/output/437986
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0928493114006614
• Additional Information: This is an authors accepted manuscript of an article published in Materials science and engineering : C, 2014, v.46.