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Journal of Nanotechnology
Volume 2016, Article ID 4059591, 8 pages
Research Article

Biosynthesis of Iron Nanoparticles Using Tie Guanyin Tea Extract for Degradation of Bromothymol Blue

Fujian Provincial Key Laboratory of Biochemical Technology, College of Chemical Engineering, Huaqiao University, No. 668 Jimei Avenue, Xiamen 361021, China

Received 30 June 2016; Revised 18 November 2016; Accepted 24 November 2016

Academic Editor: Marco Rossi

Copyright © 2016 Haiyan Xin 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.


Facile synthesis of zero-valent iron nanoparticles has been developed using Tie Guanyin tea extract as reducing and stabilizing agent. The characterization carried out by UV-Vis, SEM, TEM, XRD, and FTIR techniques has identified the successful synthesis of the zero-valent iron nanoparticles. It is evident from the TEM result that spherical zero-valent iron nanoparticles with average size of  nm have been obtained through biological method in this study. FTIR spectrum demonstrates that the polyphenols play an important role in the synthetic process. Diffraction peak at 2 of 44.9° and 49.1° in XRD spectrum explains the existence of the iron nanoparticles. Additionally, effect of concentration of iron nanoparticles and concentration of bromothymol blue on the kinetic rate constants during the degradation process was studied.