TY - GEN
T1 - Green approach to synthesize silver nanoparticles from stem extract of Garden Rhubarb
T2 - 8th International Conference on Nanomaterials - Research and Application, NANOCON 2016
AU - Shimoga, D. Ganesh
AU - Palem, Ramasubba Reddy
AU - Saha, Nabanita
AU - Sáha, Petr
PY - 2016
Y1 - 2016
N2 - Recent advances in Nano-biotechnology, offer potential longer duration storage options for silver nanoparticles (SNPs) with preferable capping agents where a plentiful efforts have been given to minimize the toxicity effects SNPs. To overcome the toxicity scenario of SNPs, a novel green methodology was put forward in the present investigation. Biogenic SNPs were synthesized using water extract of Garden Rhubarb (GR) stems under ambient conditions. The method demonstrates an eco-friendly, instant and easy route for stable SNPs synthesis. The formation of instant SNPs was analyzed by visual observation and monitored by UV-visible (UV-vis) spectrophotometer. The characteristic surface plasmon resonance (SPR) band at 445 nm, revealed the formation of SNPs. The X-ray diffraction (XRD) pattern of green SNPs showed their crystalline structure. SEM and TEM studies revealed that the shape of SNPs was spherical and has approximate diameter within 100 nm range. The zeta potential measurements on 180th day after SNPs synthesis, revealed the stability and size distribution of SNPs. The values are 29.6mV, 28.1mV and 24.1mV for three varied compositions of AgNO3 (1mM) and GR extract. The high dielectric constant (ϵ′) has been observed for GR mediated SNPs, the ϵ′ values were found to reach the minimum value of 40000 at frequency 1MHz. Suitable tuning of the dielectric performances can conclusively prove their applications in multifunctional sensors, optical, and charge storage devices.
AB - Recent advances in Nano-biotechnology, offer potential longer duration storage options for silver nanoparticles (SNPs) with preferable capping agents where a plentiful efforts have been given to minimize the toxicity effects SNPs. To overcome the toxicity scenario of SNPs, a novel green methodology was put forward in the present investigation. Biogenic SNPs were synthesized using water extract of Garden Rhubarb (GR) stems under ambient conditions. The method demonstrates an eco-friendly, instant and easy route for stable SNPs synthesis. The formation of instant SNPs was analyzed by visual observation and monitored by UV-visible (UV-vis) spectrophotometer. The characteristic surface plasmon resonance (SPR) band at 445 nm, revealed the formation of SNPs. The X-ray diffraction (XRD) pattern of green SNPs showed their crystalline structure. SEM and TEM studies revealed that the shape of SNPs was spherical and has approximate diameter within 100 nm range. The zeta potential measurements on 180th day after SNPs synthesis, revealed the stability and size distribution of SNPs. The values are 29.6mV, 28.1mV and 24.1mV for three varied compositions of AgNO3 (1mM) and GR extract. The high dielectric constant (ϵ′) has been observed for GR mediated SNPs, the ϵ′ values were found to reach the minimum value of 40000 at frequency 1MHz. Suitable tuning of the dielectric performances can conclusively prove their applications in multifunctional sensors, optical, and charge storage devices.
KW - Dielectric properties
KW - Green synthesis
KW - Silver nanoparticles
KW - Zeta potential
UR - http://www.scopus.com/inward/record.url?scp=85017197342&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85017197342
T3 - NANOCON 2016 - Conference Proceedings, 8th International Conference on Nanomaterials - Research and Application
SP - 698
EP - 702
BT - NANOCON 2016 - Conference Proceedings, 8th International Conference on Nanomaterials - Research and Application
PB - TANGER Ltd.
Y2 - 19 October 2016 through 21 October 2016
ER -