Title: Metallic nanoparticles: synthesis, characterisation and application

Authors: Nguyen Hoang Luong, Nguyen Ngoc Long, Le Van Vu, Nguyen Hoang Hai, Phan Tuan Nghia, Nguyen Thi Van Anh

Addresses: Center for Materials Science, Hanoi University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam. ' Center for Materials Science, Hanoi University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam. ' Center for Materials Science, Hanoi University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam. ' Center for Materials Science, Hanoi University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam. ' Key Laboratory for Enzyme and Protein Technology, Hanoi University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam. ' Key Laboratory for Enzyme and Protein Technology, Hanoi University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam

Abstract: Colloidal sphere-like gold nanoparticles were prepared from an HAuCl₄ aqueous solution by the chemical reduction method and by using X-ray irradiation, while rod-like gold nanoparticles were synthesised according to the seed-mediated growth method and by sonoelectrochemistry. Gold nanoparticles exhibit fcc structure. Sphere-like gold nanoparticles have a diameter of 20-60 nm, while rod-like gold nanoparticles have an aspect ratio of 2–4. In UV-vis spectra, the absorption bands related to surface plasmon resonance were observed. Co-Pt nanoparticles of 5-20 nm were prepared by electrochemistry, while Fe-Pt nanoparticles with a size of 5-10 nm were prepared by sonoelectrochemistry. After annealing, these magnetic nanoparticles showed a high coercivity. The gold nanoparticles were functionalised for detecting breast cancer cells.

Keywords: gold nanoparticles; Co-Pt nanoparticles; Fe-Pt nanoparticles; optical properties; magnetic properties; nanotechnology; platinum; cobalt; iron; breast cancer; cancer cell detection; metallic nanoparticles; cancer cells.

DOI: 10.1504/IJNT.2011.038201

International Journal of Nanotechnology, 2011 Vol.8 No.3/4/5, pp.227 - 240

Published online: 21 Jan 2011 *

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