Efficient one pot synthesis of chitosan-induced gold nanoparticles by microwave irradiation

Fan, Cailin; Li, Wei; Zhao, Shiju; Chen, Jian; Li, Xin

doi:10.1016/j.matlet.2008.03.040

Cited by 41 publications

(12 citation statements)

References 29 publications

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“…In addition, many nonthermal effects of microwave radiation have been previously proposed, including (i) an increase in the probability of collision between two molecules and Journal of Nanomaterials (ii) a decrease in the activation energy [18] resulting from the direct interaction of the electric fields with specific molecules in the reactants that could enhance reactions. These are the unique characteristics of microwave heating that improve the reaction rates, increase the yields, and increase the uniformity of the products [14][15][16][17][18][19][20][21][22][23][24][25]. We also note that microwave synthesis is one of the routes by which the need for mass production of nanoparticles can be met.…”

Section: Resultsmentioning

confidence: 99%

One‐Step Synthesis of PEG‐Coated Gold Nanoparticles by Rapid Microwave Heating

Seol

Kim

Jung

et al. 2013

Journal of Nanomaterials

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Polyethylene Glycol- (PEG-) coated gold nanoparticles (PEG-AuNPs) are synthesized by a one-step route with rapid microwave heating. Homogeneous nucleation of the primary gold particles is enhanced by increasing the applied microwave power during the initial stage of the synthesis, increasing the temperature ramping rate (Rr) and resulting in decreased size and improved uniformity of the synthesized PEG-AuNPs. Using rapid microwave heating, we successfully produce uniform colloidal PEG-AuNPs with an average diameter of14.3±2.5 nm within a few minutes. By appropriate tuning of the growth parameters, microwave synthesis can produce largely colloidal PEG-AuNPs with high uniformity.

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Section: Resultsmentioning

confidence: 99%

One‐Step Synthesis of PEG‐Coated Gold Nanoparticles by Rapid Microwave Heating

Seol

Kim

Jung

et al. 2013

Journal of Nanomaterials

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“…In order to investigate the analytical potential of the AuNps modified electrode as sensing platform, we have detected caffeic acid by means of Differential Pulse Voltammetry (DPV). Generally, the linear range of detection is limited and not applicable to different matrices, making the sensor not suitable for a general purpose 18,21, 22.…”

Section: Resultsmentioning

confidence: 99%

Chitosan Stabilized Gold Nanoparticle‐Modified Au Electrodes for the Determination of Polyphenol Index in Wines: a Preliminary Study

et al. 2012

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Gold‐chitosan nanocomposite is successfully proposed for assembling a sensitive and selective electrochemical sensor for the determination of an antioxidant such as caffeic acid, which has recently attracted much attention due to its benefits on human health. In this paper, taking advantage of the peculiar sensing performance of the nanocomposite, an analytical method based on differential pulse voltammetry for determination of polyphenol index in wines was proposed.

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“…Chitosan, which is an aminopolysaccharide composed of β-(1→4)-linked N-acetyl-D-glucosamine and D-glucosamine units, [23][24][25][26] has been used as a stabilizer of gold and silver nanoparticles by different preparation methods. [27][28][29][30][31][32] It has been reported that chitosan can be used as a stabilizer as well as reducing reagent by UV irradiation in the preparation of silver nanoparticles. 33 However, the reaction could only be performed in acidic media due to the poor solubility of chitosan in neutral and basic media.…”

Section: Introductionmentioning

confidence: 99%

Photochemical Synthesis of Ag and Au Nanoparticles Using a Thioxanthone Substituted Chitosan as Simultaneous Photoinitiator and Stabilizer

Valandro

Poli

Neumann

et al. 2019

J. Braz. Chem. Soc.

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Silver (AgNPs) and gold (AuNPs) nanoparticles in aqueous solution were generated and stabilized using the 10-oxo-10H-dibenzene thiopyran-3-4-dicarboximide chitosan (TXICh) macrophotoinitiator. The photoinitiator and the nanoparticles in aqueous solution were characterized by UV-Vis spectroscopy and transmission electron microscopy (TEM). Pure TXICh in aqueous solution forms self-assembled particles with diameter around 30 nm. AgNPs were prepared using TXICh in the presence and absence of triethanolamine (TEOH). During irradiation, a broad band in the range of 410-415 nm was observed, corresponding to the plasmon absorption, indicating the AgNPs formation. TEM images revealed that the AgNPs had spherical shape in the absence and presence of TEOH. The synthesis of AgNPs in the presence of TEOH occurred rapidly (maximum conversion reached after 15 min), whereas in its absence 4 hours were required. The AgNPs prepared with TXICh/TEOH presented smaller and more uniform nanoparticles size. AuNPs were also prepared using TXICh as photoinitiator/stabilizer system. These nanoparticles showed an intense surface plasmon band at 530 nm and the TEM images revealed spherical particles of around 4 nm. These studies indicate that TXICh can act not only as a photoinitiator, but also as a stabilizer in the AgNPs and AuNPs formation.

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Efficient one pot synthesis of chitosan-induced gold nanoparticles by microwave irradiation

Cited by 41 publications

References 29 publications

One‐Step Synthesis of PEG‐Coated Gold Nanoparticles by Rapid Microwave Heating

One‐Step Synthesis of PEG‐Coated Gold Nanoparticles by Rapid Microwave Heating

Chitosan Stabilized Gold Nanoparticle‐Modified Au Electrodes for the Determination of Polyphenol Index in Wines: a Preliminary Study

Photochemical Synthesis of Ag and Au Nanoparticles Using a Thioxanthone Substituted Chitosan as Simultaneous Photoinitiator and Stabilizer

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