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Journal of Analytical Methods in Chemistry
Volume 2012, Article ID 348965, 6 pages
http://dx.doi.org/10.1155/2012/348965
Research Article

Facile and One Pot Synthesis of Gold Nanoparticles Using Tetraphenylborate and Polyvinylpyrrolidone for Selective Colorimetric Detection of Mercury Ions in Aqueous Medium

Electrodics and Electrocatalysis Division, Central Electrochemical Research Institute, Karaikudi 630 006, India

Received 3 November 2011; Accepted 24 December 2011

Academic Editor: Peter Stockwell

Copyright © 2012 Sidhureddy Boopathi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Supplementary Material

Figure S1: 3 UV-vis spectra obtained during the formation of AuNPs at different time intervals after addition of HAuCl4 to the solution containing TPB (both concentrations is 1.00 × 10‑3 M).

Figure S2: UV-vis spectra of PVP stabilized AuNPs of various concentration (a) 0.25 × 10‑3, (b) 0.50 × 10‑3, (c) 0.75 × 10‑3, (d) 1.00 × 10‑3, and (e) 2.00 × 10‑3 M of HAuCl4 solution using 1 × 10‑3 M TPB as reductant.

Figure S3: Cyclic voltammetry of TPB (1.00 x10‑3), PVP (0.01g) dissolved in 0.5M H2SO4 solution containing with (blue color line) and without (black color line) HAuCl4.

  1. Supplementary Material