A facile synthesis and characterization of Ag, Au and Pt nanoparticles using a natural hydrocolloid gum kondagogu (Cochlospermum gossypium)

Vinod, V.T.P.; Saravanan, P.; Sreedhar, B.; Devi, D. Keerthi; Sashidhar, R.B.

doi:10.1016/j.colsurfb.2010.11.035

Cited by 198 publications

(103 citation statements)

References 50 publications

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“…The crystalline phases obtained with the formation of Pt nanoparticles could be indexed to (1 1 1), (2 0 0), (2 2 0) and (3 1 1) planes of facecentered cubic bulk metallic counterparts. A similar finding was reported by (Vinod et al, 2011) on the formation of Pt nanoparticles using a natural hydrocolloid gum kondagogu (Cochlospermum gossypium). The average crystal size was calculated by using Scherrer's equation and estimated as 9.93 nm.…”

Section: Resultssupporting

confidence: 87%

A Clean-Green Synthesis of Platinum Nanoparticles Utilizing a Pernicious Weed Lantana (<i>Lantana Camara</i>)

Mavukkandy

Chakraborty

Abbasi³

2016

American Journal of Engineering and Applied Sciences

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A rapid, reproducible single step method is proposed for synthesizing platinum nanoparticles using an invasive weed lantana (Lantana camara, L). The method involves mixing of platinum (VI) solution, lantana leaf extract and ascorbic acid in appropriate concentrations and keeping the mixture at 95°C for 8 min. The collective action of ascorbic acid and leaf extract reduced the chloroplatinic acid to platinum nanoparticles and leaf extract then served the additional purpose of stabilizing the nanoparticles. The resulting nanoparticles have an average size of 35 nm and crystallized in face centred cubic symmetry. The course of the synthesis was trekked by UV-visible spectrophotometry and the characterization of the nanoparticles was done with scanning electron microscopy and confocal laser Raman spectroscopy. Particle size distribution was estimated by dynamic light scattering and the crystal structure was determined by XRD. The purity of the product was checked by EDAX.

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Section: Resultssupporting

confidence: 87%

A Clean-Green Synthesis of Platinum Nanoparticles Utilizing a Pernicious Weed Lantana (<i>Lantana Camara</i>)

Mavukkandy

Chakraborty

Abbasi³

2016

American Journal of Engineering and Applied Sciences

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“…The rate constant of catalytic reaction was studied at different temperatures (33,42,51, 62 and 73 °C) and at fixed concentrations of hexacyanoferrate(III), borohydride and amount of catalyst. The Arrhenius plot of lnk versus 1/T is given in Fig.…”

Section: Catalytic Reduction Of Hexacyanoferrate(iii)mentioning

confidence: 99%

“…Similarly, the as-synthesized AgNPs showed lower catalytic and biological activity. To activate the AgNPs, carboxymethylation is one of the systems utilized for the functionalization of natural polymers [33]. Carboxymethylation in general expands the hydrophilicity and solution clearness of the polysaccharides and improves it dissolvable in an aqueous system.…”

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confidence: 99%

Microwave-assisted synthesis of silver nanoparticles and their application in catalytic, antibacterial and antioxidant activities

Seku¹,

et al. 2018

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Eco-friendly silver nanoparticles (AgNPs) were synthesized using a carboxymethylated gum kondagogu (CMGK) as capping and reducing agent by microwave irradiation method. Synthesized AgNPs were analyzed by TEM, showed spherical in shape with an average particle size distribution of 9 ± 2 nm. XRD results showed that the cubic-structured AgNPs with crystallite size of 8.6 nm. The synthesized CMGK capped AgNPs was tested for catalytic activity using hexacyanoferrate(III) in the presence of NaBH 4 and the impacts of catalyst dose and temperature were examined. The synthesized AgNPs demonstrated a huge antibacterial action on both Gram-positive and negative groups of microorganisms with inhibition zone of 23, 25 and 28 mm, respectively, for Bacillus subtilis, Bacillus cereus and Escherichia coli, they showed moderate antibacterial action (zone of inhibition 15 mm) with Pseudomonas aeruginosa. In addition, the ability of the AgNPs scavenging activity with different concentrations was studied using the DPPH radical scavenging.

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“…Various plant extracts used in the previous researches are Ficus religiosa [4], Memecylon umbellatum [5], Macrotyloma uniflorum [6], Brevibacterium casei [7], honey [8], Citrus limon, Citrus reticulate, Citrus sinensis [9], Piper pedicellatum [10], Terminalia chebula [11], Nyctanthes arbortristis [12], Murraya Koenigii [13], Mangifera indica [14], Cinnamomum zeylanicum [15], Cochlospermum gossypium [16], and Zingiber officinale [17].…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Gold Nanoparticles using Aqueous Garlic (Allium sativum L.) Extract, and Its Interaction Study with Melamine

Yulizar

Ariyanta

Abduracman

2017

Bull. Chem. React. Eng. Catal.

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Gold nanoparticles (AuNPs) have been successfully prepared by green synthesis method using aqueous extract of garlic with the Latin name of Allium sativum L. (ASL) as a reducing and stabilizing agents. Identification of active compounds in aqueous ASL extract was conducted by phytochemical analysis and Fourier transform infrared (FTIR) spectroscopy, while the synthesized AuNPs were characterized using UV-Vis spectrophotometer and transmission electron microscopy-selected area electron diffraction (TEM-SAED). The AuNPs formation was optimized at aqueous ASL extract concentration of 0.05%, HAuCl4 concentration of 2.0×10 -4 M, and pH of 3.6. The optimized AuNPs was characterized using TEM, and has a spherical shape with particle size of 15±3 nm. The particles were also stable up until one month. The synthesized AuNPs has been studied its interaction with melamine, and showed the optimum pH of interaction at 3.6.

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A facile synthesis and characterization of Ag, Au and Pt nanoparticles using a natural hydrocolloid gum kondagogu (Cochlospermum gossypium)

Cited by 198 publications

References 50 publications

A Clean-Green Synthesis of Platinum Nanoparticles Utilizing a Pernicious Weed Lantana (<i>Lantana Camara</i>)

A Clean-Green Synthesis of Platinum Nanoparticles Utilizing a Pernicious Weed Lantana (<i>Lantana Camara</i>)

Microwave-assisted synthesis of silver nanoparticles and their application in catalytic, antibacterial and antioxidant activities

Green Synthesis of Gold Nanoparticles using Aqueous Garlic (Allium sativum L.) Extract, and Its Interaction Study with Melamine

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