Abstract
The amino acid asparagine (ASP) was used as a benign reducing and stabilizing agent for the production of monodisperse gold nanoparticles (AuNPs) using green chemistry principles. With an increasing concentration of ASP (0.5 to 10 mM), the absorbance intensity at 525 nm increased; however, no effects on the color, size, or shape of the AuNPs were observed. Transmission electron microscope (TEM) images showed that the AuNPs were either hexagonal or spherical in shape and had an average size of approximately 10 ± 5 nm. Facile colorimetric assays of the AuNPs ere applied to detect a variety of heavy metal ion species in water.
Original language | English |
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Pages (from-to) | 7235-7239 |
Number of pages | 5 |
Journal | Journal of Nanoscience and Nanotechnology |
Volume | 15 |
Issue number | 9 |
DOIs | |
State | Published - 1 Sep 2015 |
Keywords
- Arsenic
- Asparagine
- Gold nanoparticles
- Sensing.
- Toxicity