Preparation of colloidal silver nanoparticles in poly(<i>N</i>-vinylpyrrolidone) by γ-irradiation

Du, Bùi Duy; Phú, Đặng Văn; Duy, Nguyễn Ngọc; Lan, Nguyen Thi; Lang, Vo Thi Kim; Thanh, Ngo Vo Ke; Phong, Nguyen Thi Phuong; Hiến, Nguyễn Quốc

doi:10.1080/17458080802353527

Cited by 38 publications

(31 citation statements)

References 24 publications

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“…The obtained results indicated that the higher the Cu 2+ ions the larger the CuCl nanoparticle size is. Results of our previous study also confirmed that the higher the initial metal ions precursor concentration (Ag + ), the larger the metal nanoparticles size (Ag nano) [16]. In addition, TEM images in Figure 1 also indicated that the morphology of nano-sized CuCl was quasispherical and the particle size distribution was of the Gaussian mode (bell-shaped distribution) with fairly narrow distribution scope.…”

Section: Dependence Of Cucl Nanoparticle Size On Initial Cu 2+ Concensupporting

confidence: 58%

Large-scale fabrication of colloidal nano-sized CuCl solution with high concentration for using as fungicide for plant

Du¹,

Dung²,

Tuan³

et al. 2017

VJChem

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Synthesis of nano-sized CuCl with Cu concentration from 4,000 to 6,000 ppm dispersed in chitosan solution (nanosized CuCl/CTS) using CuSO 4 .5H 2 O as the precursor and NaHSO 3 as the reducing agent in HCl acid medium on large scale of 1.000 kg/batch was carried out. The obtained nano-sized CuCl/CTS samples were characterized by transmission electron microscopy (TEM) and X-ray powder diffraction (XRD). Based on the obtained results, the reaction factors for fabrication of the colloidal nano-sized CuCl/CTS solution with Cu concentration of 5,000 ppm and CuCl nanoparticle size of about 7.7 nm dispersed in 1 % chitosan solution were selected for application in agriculture as a fungicide for plant protection.

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Section: Dependence Of Cucl Nanoparticle Size On Initial Cu 2+ Concensupporting

confidence: 58%

Large-scale fabrication of colloidal nano-sized CuCl solution with high concentration for using as fungicide for plant

Du¹,

Dung²,

Tuan³

et al. 2017

VJChem

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“…There is a substantial literature on metal NPs, specially on their synthesis, which can be accomplished using different methods such as chemical reduction [33], seed-mediated [34], photochemical [35], electrochemical [36], sonochemical [37], lithography [38], galvanic replacement [39], thermal evaporation [40], radiolysis [41], sol-gel [42], laser ablation [43] or CVD [44].…”

Section: Introductionmentioning

confidence: 99%

Spectroelectrochemistry at free-standing carbon nanotubes electrodes

Ibáñez

Garoz‐Ruiz

Plana

et al. 2016

Electrochimica Acta

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms 1. ISE member. Abstract.A versatile and low-cost methodology for fabricating free-standing carbon nanotubes (CNT) electrodes for electrochemical and spectroelectrochemical applications is described. The uniformity, flexibility and resistance to bending of these films make them one of the most interesting membranes in a wide range of applications. CNT electrodes were characterized by Raman spectroscopy and scanning electron microscopy and their electrochemical performance was assessed employing various redox species such as ferrocenemethanol, hexacyanoferrate (II) and dopamine. Free-standing single-walled CNT electrodes exhibit good conductivity and transparency to UV-Vis radiation, making them suitable as optically transparent electrodes. This is exemplified by monitoring, using UV-Vis absorption spectroelectrochemistry, the electrodeposition of gold nanoparticles (AuNPs) on one face of the free-standing CNT electrodes, while the other face remained unmodified.

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“…During irradiation Ag + ion is reduced to Ag o atom by aq e − and H • and Ag o atoms will be agglomerated to form AgNPs that are capped by chitosan or by other stabilizers. The detail reducing mechanism of formation of AgNPs by gamma Co-60 irradiation method can be referred to the papers reported by Du et al [24] and Huang et al [25]. The UV-Vis spectra of 2 mM AgNPs stabilized by 0.5%, 1% and 2% chitosan and TEM images with particle size distribution were shown in Figure 1 and Figure 2, respectively.…”

Section: Agnps/chitosan Characterizationmentioning

confidence: 91%

“…reduction of Ag + ions to Ag o (zero-valent silver) in solution have been reported [24] [25] and the most common method is chemical reduction of silver salt precursor using chemical reducing agents [19]. In comparison with other methods, gamma Co-60 ray irradiation has been considered as an effective method with several advantages as described in our previous paper [24]. Chitosan is a natural polysaccharide derived from the deacetylation of chitin with both antibacterial property and biocompatibility [26].…”

Section: Introductionmentioning

confidence: 99%

Influence of Chitosan Binder on the Adhesion of Silver Nanoparticles on Cotton Fabric and Evaluation of Antibacterial Activity

Hiến¹,

Phú²,

Duy³

et al. 2015

ANP

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Colloidal silver nanoparticles (AgNPs) with particle size less than 10 nm and concentration of 2 mM/L (~200 mg/L) were synthesized by gamma Co-60 ray irradiation of Ag + /chitosan solutions with different chitosan concentration of 0.5%, 1% and 2% (w/v). Incorporation of AgNPs onto cotton fabric was carried out by padding method with 100% wet pick-up. The content of AgNPs deposited on cotton fabric and released from cotton fabric after repeated washing was determined by inductively couple plasma-atomic emission spectroscopy (ICP-AES). The results indicated that cotton/AgNPs fabric made from padding into AgNPs solution with 0.5% -1% chitosan was the best one of AgNPs adhesion ability on cotton fabric. Results on antibacterial activity against S. aureus showed that cotton/AgNPs fabric with AgNPs content more than 100 mg/kg exhibited highly antibacterial activity (η > 98%). The mechanical property (tensile strength and elongation) of cotton/AgNPs fabrics was almost unchanged in comparison with untreated cotton fabric. Thus, the resultant cotton/AgNPs fabric with highly antibacterial activity can be potentially used as bed drapes and/or patient uniforms in hospitals, etc.

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Preparation of colloidal silver nanoparticles in poly(N-vinylpyrrolidone) by γ-irradiation

Cited by 38 publications

References 24 publications

Large-scale fabrication of colloidal nano-sized CuCl solution with high concentration for using as fungicide for plant

Large-scale fabrication of colloidal nano-sized CuCl solution with high concentration for using as fungicide for plant

Spectroelectrochemistry at free-standing carbon nanotubes electrodes

Influence of Chitosan Binder on the Adhesion of Silver Nanoparticles on Cotton Fabric and Evaluation of Antibacterial Activity

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