One-step, size-controlled synthesis of gold nanoparticles at room temperature using plant tannin

Huang, Xin; Wu, Hao; Liao, Xuepin; Shi, Bi

doi:10.1039/b918176h

Cited by 204 publications

(154 citation statements)

References 39 publications

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“…This blue-shift is perhaps due to the formation of more stabilized, smaller-sized nanoparticles with increasing concentration of the P. granatum juice extract. Above 2,400 mg L -1 concentration of the juice extract, no further increase of the SPR band was observed, perhaps due to complete reduction of the accessible Au(III) ions to Au(0) (Huang et al 2010). A broad peak in the 270-275 nm region observed in stabilized AuNPs might be due to the quinone moiety resulting from the oxidation of phenolic compounds.…”

Section: Resultsmentioning

confidence: 97%

“…. Collision of the neighboring Au 0 atoms leads to the formation of AuNPs and the synthesized AuNPs are stabilized by polyphenolic compounds as well as the quinones (Huang et al 2010;Prakash and Prakash 2011).…”

Section: Resultsmentioning

confidence: 99%

“…The reduction of the metal salts usually take place in water under mild reaction conditions where the plant extract acts both as reducing as well as stabilizing agent. The extracts of Bayberry tannin (Huang et al 2010), Alfa-alfa (Montes et al 2011), Aloe vera (Chandran et al 2006), Terminalia arjuna bark , Azadirachta indica leaf (Shiv Shankar et al 2004), Syzygium cumini (Kumari et al 2010), etc. have been utilized for the synthesis of AuNPs.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of gold nanoparticles using renewable Punica granatum juice and study of its catalytic activity

Dash

Bag

2012

Appl Nanosci

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Punica granatum juice, a delicious multivitamin drink of great medicinal significance, is rich in different types of phytochemicals, such as terpenoids, alkaloids, sterols, polyphenols, sugars, fatty acids, aromatic compounds, amino acids, tocopherols, etc. We have demonstrated the use of the juice for the synthesis of gold nanoparticles (AuNPs) at room temperature under very mild conditions. The synthesis of the AuNPs was complete in few minutes and no extra stabilizing or capping agents were necessary. The size of the nanoparticles could be controlled by varying the concentration of the fruit extract. The AuNPs were characterized by surface plasmon resonance spectroscopy, high resolution transmission electron microscopy, fourier transform infrared spectroscopy and X-ray diffraction studies. Catalytic activity of the synthesized colloidal AuNPs has also been demonstrated.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis of gold nanoparticles using renewable Punica granatum juice and study of its catalytic activity

Dash

Bag

2012

Appl Nanosci

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“…In this work, the synthesis of silver nanoparticles has been carried out using the juice extract of Citrullus lanatus (watermelon). The Citrullus lanatus is a good source of vitamin A and C. The presence of polyphenol in this juice is found to be responsible for the reduction of Ag ?1 to Ag 0 ions and also stabilization of AgNP (Maiti et al 2014;Huang et al 2010;Prakash and Prakash 2011).…”

Section: Hgmentioning

confidence: 99%

Detection of heavy metals (Cu+2, Hg+2) by biosynthesized silver nanoparticles

2015

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Here, we are reporting two methods for detection of Cu ?2 ion and Hg ?2 ions using biosynthesized silver nanoparticles. The detection of Cu ?2 ion was based on changes in absorbance resulting from complex formation of the metal ion. Various concentrations of Cu ?2 ion were used to test the linearity and sensitivity of the method. A new peak at around 770 nm, in addition to the peak of the AgNP at 406 nm, was observed in each case (above 20 lM). With the increase of concentration of Cu ?2 ion solution, the absorbance at 406 nm peak decreased and that of 770 nm increased gradually. The calibration curve obtained from the ratio of the absorption coefficients of these two peaks (Ex 770/406 ) versus concentration of Cu ?2 ions enables one to estimate quantitatively the amount of Cu ?2 ions present in water in lM levels. This AgNP was further functionalized with 3-mercapto-1, 2-propanediol (MPD) for detection of Hg ?2 present in water by colorimetric method. As soon as Hg ?2 solution was added in MPDfunctionalized AgNP (MPD-AgNP), a new peak at around 606 nm appeared along with the peak at 404 nm. The new peak might be due to the aggregations occurred by the recognition of heavy metal ion Hg ?2 by MPD-AgNP through dipropionate ion. A calibration curve between the ratios of the absorption coefficients of these two peaks (Ex 404/606 ) and concentration of Hg ?2 was drawn for quantitative estimation of Hg ?2 present in water at lM level.

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“…Further, size distribution of MDP-capped AuNPs were about ∼20% of their average core sizes, which is a significant improvement compared to the particle size distribution of AuNPs synthesized with previously reported one-pot preparation methods. 19,23 Because of their small size (2.3 nm), particles with 1:128 molar ratio did not exhibit SPR band. 11,30 We conclude that the ability of the multidomain peptide to separate and concert nucleation and growth phases of nanoparticle formation enabled fine-tuned synthesis with a narrow size distribution.…”

Section: Resultsmentioning

confidence: 99%

Multi-Domain Short Peptide Molecules for in Situ Synthesis and Biofunctionalization of Gold Nanoparticles for Integrin-Targeted Cell Uptake

Gulsuner

Ceylan

Güler

et al. 2015

ACS Appl. Mater. Interfaces

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We describe design and synthesis model of multidomain (modular) peptides (MDPs), which direct a reaction cascade coupling the synthesis and surface functionalization of gold nanoparticles (AuNPs) in a single step. The synthesis is achieved via simple mixing of the aqueous solutions of auric acid and MDPs at room temperature without the addition of any surfactants or toxic intermediate reagents. This method allows facile control over the nanoparticle size between ∼2−15 nm, which opens a practical window for biomedical applications. In contrast to the conventional citrate-mediated methods, peptide-mediated synthesis and stabilization provide increased colloidal stability to AuNPs. As a proof of this concept, we demonstrate active targeting of human breast adenocarcinoma cell line (MCF7) using the one-step-prepared engineered AuNPs. Overall, we propose a single-step, chemically greener, biologically safer method for the synthesis and surface functionalization of gold nanoparticles in a sizecontrolled manner. The chemical versatility of the MDP design broadens the applicability of this strategy, thereby emerging as a successful alternative for the currently available nanoparticle preparation technologies.

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One-step, size-controlled synthesis of gold nanoparticles at room temperature using plant tannin

Cited by 204 publications

References 39 publications

Synthesis of gold nanoparticles using renewable Punica granatum juice and study of its catalytic activity

Synthesis of gold nanoparticles using renewable Punica granatum juice and study of its catalytic activity

Detection of heavy metals (Cu+2, Hg+2) by biosynthesized silver nanoparticles

Multi-Domain Short Peptide Molecules for in Situ Synthesis and Biofunctionalization of Gold Nanoparticles for Integrin-Targeted Cell Uptake

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