期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 15, 期 1, 页码 326-329出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2015.8351
关键词
AuNPs/Nanoplatelets; Optimization Studies; Biological Synthesis; Ocimum sanctum
类别
资金
- Korean Government through KEIKI [201-091-003]
- KETEP [20115020100060]
- NRF [NRL 2009-0083194]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20115020100060] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We demonstrate the effects extract amount, pH and temperature on the formation of gold nanoparticles (AuNP) using Ocimum santum plant extract. The average AuNP size, shape, and particle number can be controlled by simply varying the pH, temperature and amount of plant extract in the reaction medium. Acidic pH was found to be ideal for the formation of AuNPs. UV-visible spectra for the reaction of the plant extract with 1 mM HAuCl4 solution showed that the highest intensity of surface plasmon resonance (SPR) occurred at pH 3. Transmission electron microscopy (TEM) showed that temperature can be used to control the aspect ratio and the relative amount of gold nanoplatelets (triangular and hexagonal). Increasing the temperature decreased the population of gold nanoplatelets and increased the number of spherical NPs, and nanoplatelet population was found to be highest at 20 degrees C and 30 degrees C.
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