Abstract
Highlights: ► Pomegranate leaf extracts mediated rapid gold nanoparticle (AuNP) synthesis. ► The phyto-inspired AuNPs were size-tuned and characterized. ► The reducing and capping agents in the extract were identified. ► The nanoparticles reacted specifically with arsenate (V) ions. - Abstract: When pomegranate leaf extracts were incubated with chloroauric acid (HAuCl{sub 4}), gold nanoparticles (AuNPs) were synthesized. These were characterized by a variety of techniques. With an increasing content of the leaf extract, a gradual decrease in size and an increase in monodispersity were observed. Transmission electron microscope (TEM) images showed that the phyto-fabricated AuNPs were surrounded by an amorphous layer. Gallic acid in the extract mediated the reduction and a natural decapeptide capped the nanostructures. Blocking of thiol groups in the decapeptide cysteine residues caused the nanoparticles to aggregate. On interaction with arsenate (V) ions, the UV–vis spectra of the nanoparticles showed a decrease in intensity and a red-shift. Energy dispersive spectra confirmed the presence of arsenate associated with the AuNPs. Thus, by using these AuNPs, a method for sensing the toxic arsenate ions could be developed.
Rao, Ashit;
Mahajan, Ketakee;
Bankar, Ashok;
[1]
Srikanth, Rapole;
[2]
Kumar, Ameeta Ravi;
[1]
Gosavi, Suresh;
[3]
Centre for Sensor Studies, University of Pune, Pune 411007 (India)];
Zinjarde, Smita;
[1]
Centre for Sensor Studies, University of Pune, Pune 411007 (India)]
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune 411007 (India)
- Proteomics Laboratory, National Centre for Cell Science, Pune 411007 (India)
- Department of Physics, University of Pune, Pune 411007 (India)
Citation Formats
Rao, Ashit, Mahajan, Ketakee, Bankar, Ashok, Srikanth, Rapole, Kumar, Ameeta Ravi, Gosavi, Suresh, Centre for Sensor Studies, University of Pune, Pune 411007 (India)], Zinjarde, Smita, and Centre for Sensor Studies, University of Pune, Pune 411007 (India)].
Facile synthesis of size-tunable gold nanoparticles by pomegranate (Punica granatum) leaf extract: Applications in arsenate sensing.
United States: N. p.,
2013.
Web.
doi:10.1016/J.MATERRESBULL.2012.12.025.
Rao, Ashit, Mahajan, Ketakee, Bankar, Ashok, Srikanth, Rapole, Kumar, Ameeta Ravi, Gosavi, Suresh, Centre for Sensor Studies, University of Pune, Pune 411007 (India)], Zinjarde, Smita, & Centre for Sensor Studies, University of Pune, Pune 411007 (India)].
Facile synthesis of size-tunable gold nanoparticles by pomegranate (Punica granatum) leaf extract: Applications in arsenate sensing.
United States.
https://doi.org/10.1016/J.MATERRESBULL.2012.12.025
Rao, Ashit, Mahajan, Ketakee, Bankar, Ashok, Srikanth, Rapole, Kumar, Ameeta Ravi, Gosavi, Suresh, Centre for Sensor Studies, University of Pune, Pune 411007 (India)], Zinjarde, Smita, and Centre for Sensor Studies, University of Pune, Pune 411007 (India)].
2013.
"Facile synthesis of size-tunable gold nanoparticles by pomegranate (Punica granatum) leaf extract: Applications in arsenate sensing."
United States.
https://doi.org/10.1016/J.MATERRESBULL.2012.12.025.
@misc{etde_22290393,
title = {Facile synthesis of size-tunable gold nanoparticles by pomegranate (Punica granatum) leaf extract: Applications in arsenate sensing}
author = {Rao, Ashit, Mahajan, Ketakee, Bankar, Ashok, Srikanth, Rapole, Kumar, Ameeta Ravi, Gosavi, Suresh, Centre for Sensor Studies, University of Pune, Pune 411007 (India)], Zinjarde, Smita, and Centre for Sensor Studies, University of Pune, Pune 411007 (India)]}
abstractNote = {Highlights: ► Pomegranate leaf extracts mediated rapid gold nanoparticle (AuNP) synthesis. ► The phyto-inspired AuNPs were size-tuned and characterized. ► The reducing and capping agents in the extract were identified. ► The nanoparticles reacted specifically with arsenate (V) ions. - Abstract: When pomegranate leaf extracts were incubated with chloroauric acid (HAuCl{sub 4}), gold nanoparticles (AuNPs) were synthesized. These were characterized by a variety of techniques. With an increasing content of the leaf extract, a gradual decrease in size and an increase in monodispersity were observed. Transmission electron microscope (TEM) images showed that the phyto-fabricated AuNPs were surrounded by an amorphous layer. Gallic acid in the extract mediated the reduction and a natural decapeptide capped the nanostructures. Blocking of thiol groups in the decapeptide cysteine residues caused the nanoparticles to aggregate. On interaction with arsenate (V) ions, the UV–vis spectra of the nanoparticles showed a decrease in intensity and a red-shift. Energy dispersive spectra confirmed the presence of arsenate associated with the AuNPs. Thus, by using these AuNPs, a method for sensing the toxic arsenate ions could be developed.}
doi = {10.1016/J.MATERRESBULL.2012.12.025}
journal = []
issue = {3}
volume = {48}
journal type = {AC}
place = {United States}
year = {2013}
month = {Mar}
}
title = {Facile synthesis of size-tunable gold nanoparticles by pomegranate (Punica granatum) leaf extract: Applications in arsenate sensing}
author = {Rao, Ashit, Mahajan, Ketakee, Bankar, Ashok, Srikanth, Rapole, Kumar, Ameeta Ravi, Gosavi, Suresh, Centre for Sensor Studies, University of Pune, Pune 411007 (India)], Zinjarde, Smita, and Centre for Sensor Studies, University of Pune, Pune 411007 (India)]}
abstractNote = {Highlights: ► Pomegranate leaf extracts mediated rapid gold nanoparticle (AuNP) synthesis. ► The phyto-inspired AuNPs were size-tuned and characterized. ► The reducing and capping agents in the extract were identified. ► The nanoparticles reacted specifically with arsenate (V) ions. - Abstract: When pomegranate leaf extracts were incubated with chloroauric acid (HAuCl{sub 4}), gold nanoparticles (AuNPs) were synthesized. These were characterized by a variety of techniques. With an increasing content of the leaf extract, a gradual decrease in size and an increase in monodispersity were observed. Transmission electron microscope (TEM) images showed that the phyto-fabricated AuNPs were surrounded by an amorphous layer. Gallic acid in the extract mediated the reduction and a natural decapeptide capped the nanostructures. Blocking of thiol groups in the decapeptide cysteine residues caused the nanoparticles to aggregate. On interaction with arsenate (V) ions, the UV–vis spectra of the nanoparticles showed a decrease in intensity and a red-shift. Energy dispersive spectra confirmed the presence of arsenate associated with the AuNPs. Thus, by using these AuNPs, a method for sensing the toxic arsenate ions could be developed.}
doi = {10.1016/J.MATERRESBULL.2012.12.025}
journal = []
issue = {3}
volume = {48}
journal type = {AC}
place = {United States}
year = {2013}
month = {Mar}
}