Green synthesis of polysaccharide stabilized gold nanoparticles: chemo catalytic and room temperature operable vapor sensing application

Tagad, Chandrakant; Rajdeo, Kishor; Kulkarni, Atul; More, Pravin S.; Aiyer, R. C.; Sabharwal, Sushma G.

doi:10.1039/c4ra02972k

Cited by 61 publications

(50 citation statements)

References 32 publications

(62 reference statements)

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“…Under the influence of high temperature and pressure, the rate of reduction of Ag + increases and therefore the rapid synthesis of AgNPs could be achieved. (12) This is also because of the increased formation of AgNPs with the increase in the concentration of the reducing and capping agent. The higher the concentration of the reducing agent, the more the conversion of Ag + to Ag 0 , resulting in a concomitant increase in the absorption peak intensity at 404 nm.…”

Section: Synthesis Of Agnpmentioning

confidence: 99%

“…Similarly, the green or environment-friendly synthesis of silver nanoparticles (AgNPs) has been reported using seed/plant extracts, microorganisms, plant latex, and biopolymers. (11)(12)(13)(14) The quest for finding other effective and user-friendly route/source of green synthesis/material made researchers find and explore other plants that have medicinal values.…”

Section: Introductionmentioning

confidence: 99%

“…(37,38) The FTIR spectra of the ginseng showed a peak at 211 1740 cm −1 , due to the carbonyl stretching vibrations of the aldehyde. (12,39) The decrease in peak intensity at 1740 cm −1 and the increase in peak intensity at 1640 and 1407 cm −1 (for symmetric and asymmetric -COO stretching vibrations, respectively) of ginseng-stabilized AgNPs indicate the significant role of -CHO in the reduction of Ag + . (12,39) A peak at 2988 cm −1 was assigned to the stretching vibrations of C-H in methyl and methylene groups.…”

mentioning

confidence: 99%

“…(12,39) The decrease in peak intensity at 1740 cm −1 and the increase in peak intensity at 1640 and 1407 cm −1 (for symmetric and asymmetric -COO stretching vibrations, respectively) of ginseng-stabilized AgNPs indicate the significant role of -CHO in the reduction of Ag + . (12,39) A peak at 2988 cm −1 was assigned to the stretching vibrations of C-H in methyl and methylene groups. (38,40) 1065 cm −1 was assigned to the bending vibrations of C-C-O or C-C-OH.…”

mentioning

confidence: 99%

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Green Synthesis of Silver Nanoparticles Using Panax Ginseng Root Extract for the Detection of Hg2+

Tagad¹,

Hyun²,

Rucha³

et al. 2017

Sensors and Materials

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Exploring biomaterials/molecules as a reducing/capping agent for the synthesis of metal nanoparticles has set a new trend in green nanotechnology with improved environmental safety. Herein, a facile, one-pot, and green synthesis of silver nanoparticles (AgNPs) was achieved using Panax ginseng root extract that was obtained from the root powder as a cost-effective and environmentfriendly biomaterial. Optical, functional, and morphological characteristics of the synthesized AgNPs were determined using ultraviolet-visible (UV-vis), Fourier transform infrared (FTIR) spectrophotometers, transmission electron microscopy (TEM), and atomic force microscopy (AFM). The synthesized AgNPs were used for the detection of Hg 2+ by obtaining the absorption spectrum of the compound as a function of Hg 2+ concentration, which resulted in a decrease in absorption peak intensity with a slight blue shift. The AgNP solution decolored upon dissolution due to the formation of an Ag-Hg amalgam. The sensing characteristics were found to be linear when tested from 10 µM to 1 mM Hg 2+ concentration and the detection limit was estimated as 5 µM. To check the selectivity of the sensor towards Hg 2+ , the sensor response was measured for different heavy metals such as K + , Na + , Cu 2+ , Ni 2+ , Ca 2+ , Zn 2+ , Mg 2+ , and Mn 2+ , at 10 mM concentrations.

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Section: Synthesis Of Agnpmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Green Synthesis of Silver Nanoparticles Using Panax Ginseng Root Extract for the Detection of Hg2+

Tagad¹,

Hyun²,

Rucha³

et al. 2017

Sensors and Materials

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“…Previous studies have reported similar mechanisms of nanometal synthesis. Tagad et al (2014) demonstrated that the aldehyde groups and hemiacetal reducing ends of polysaccharides facilitate the reduction of Au 3+ to Au 0 . Li et al (2015a) observed that the vibration peak of C=O from cellulose fibers slightly decreased with higher concentration of silver ions.…”

Section: +mentioning

confidence: 99%

In-situ Green Synthesis of Gold Nanoparticles using Unbleached Kraft Pulp

Bumbudsanpharoke¹,

Ko²

2015

BioResources

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Facile green synthesis of gold nanoparticles (AuNPs) on cellulose fiber was successfully achieved by reducing chloroauric acid (HAuCl4·3H2O) by means of unbleached kraft pulp. A significant color change in pulp fiber indicating the in-situ formation of gold was observed with one-step synthesis in an autoclave. As-prepared AuNP-cellulose fiber nanocomposites were thoroughly characterized by UV-Vis diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). Gold nanoparticles were uniformly dispersed on the surface of the fiber by the bio-reduction of Au 3+ from metal salt to Au 0 with the α-carbonyl group and conjugated carbonyl of phenolic groups of lignin. The AuNPs formed on cellulose fibers were estimated to have average sizes of approximately 12.5, 12.4, 16.4, and 21.0 nm, depending on the concentration of Au 3+ involved in the synthesis.

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Pd supported on locust bean gum as reusable green catalyst for Heck and Sonogashira coupling reactions and 4‐nitroaniline reduction under ultrasound irradiation

Romdhane

Atoui

Ktata

et al. 2022

Applied Organom Chemis

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An easy and environmentally friendly method has been developed for locust bean gum extraction from carob seeds to be used as natural support of palladium. The reaction was carried out in water under ultrasonic irradiation for a short period of time (30 min). This catalyst was characterized by different analytical techniques such as ultraviolet-visible (UV-vis), Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy/ energy dispersive X-ray spectroscopy (SEM/EDX), elemental mapping analysis, and X-ray diffraction (XRD). The catalytic activity of Pd supported by locust bean gum was studied in Heck and Sonogashira cross-coupling reactions in different conditions under ultrasonic irradiation. Likewise, it was examined as green catalyst of 4-nitroaniline reduction at room temperature in water. The reusability of the catalyst was verified for five consecutive cycles, where excellent yields were obtained.

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Green synthesis of polysaccharide stabilized gold nanoparticles: chemo catalytic and room temperature operable vapor sensing application

Cited by 61 publications

References 32 publications

Green Synthesis of Silver Nanoparticles Using Panax Ginseng Root Extract for the Detection of Hg2+

Green Synthesis of Silver Nanoparticles Using Panax Ginseng Root Extract for the Detection of Hg2+

In-situ Green Synthesis of Gold Nanoparticles using Unbleached Kraft Pulp

Pd supported on locust bean gum as reusable green catalyst for Heck and Sonogashira coupling reactions and 4‐nitroaniline reduction under ultrasound irradiation

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