期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 73, 期 1, 页码 75-79出版社
ELSEVIER
DOI: 10.1016/j.colsurfb.2009.04.027
关键词
Biosynthesis; Gold nanoparticles; Barbated Skullcup herb; Electrochemistry
资金
- National Key Basic Research Program [2002CB513100-10]
- New Century Excellent Talents in University [NCET-06-0697]
The design, synthesis, characterization and application of biologically synthesized nanomaterials have become an important branch of nanotechnology. In this paper, we report the extracellular synthesis of gold nanoparticles using Barbated Skullcup (BS) herb (a dried whole plant of Scutellaria barbata D. Don) as the reducing agent. After exposing the gold ions to BS herb extract, rapid reduction of gold ions is observed leading to the formation of gold nanoparticles in solution. UV-vis spectrum of the aqueous medium containing gold nanoparticles showed a peak at around 540 nm. Transmission electron microscopy (TEM) micrograph analysis of the gold nanoparticles indicated that they were well-dispersed and ranged in size 5-30 nm. When the gold nanoparticles were modified on the glassy carbon electrode (GCE), it could enhance electronic transmission rate between the electrode and the p-nitrophenol. (C) 2009 Elsevier B.V, All rights reserved.
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