Microwave-Assisted Synthesis of Silver Nanoparticles Using Chitosan: A Novel Approach

Nguyen, Ngoan Thi; Nguyen, Binh Hai; Ba, Duong Thi; Pham, Dien Gia; Khai, Tran Van; Nguyen, Lien Thi Phuong; Tran, Lam Dai

doi:10.1080/10426914.2014.892982

Cited by 21 publications

(8 citation statements)

References 18 publications

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“…Microwave irradiation offers fast and homogeneous heating of the reaction medium, typically in a time period of few seconds. As such, it provides uniform nucleation and growth conditions for AgNPs [81].…”

Section: Synthesis Of Agnps and Their Polymer Nanocompositesmentioning

confidence: 99%

Bactericidal and Cytotoxic Properties of Silver Nanoparticles

Liao

Tjong

2019

IJMS

760

436

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Silver nanoparticles (AgNPs) can be synthesized from a variety of techniques including physical, chemical and biological routes. They have been widely used as nanomaterials for manufacturing cosmetic and healthcare products, antimicrobial textiles, wound dressings, antitumor drug carriers, etc. due to their excellent antimicrobial properties. Accordingly, AgNPs have gained access into our daily life, and the inevitable human exposure to these nanoparticles has raised concerns about their potential hazards to the environment, health, and safety in recent years. From in vitro cell cultivation tests, AgNPs have been reported to be toxic to several human cell lines including human bronchial epithelial cells, human umbilical vein endothelial cells, red blood cells, human peripheral blood mononuclear cells, immortal human keratinocytes, liver cells, etc. AgNPs induce a dose-, size- and time-dependent cytotoxicity, particularly for those with sizes ≤10 nm. Furthermore, AgNPs can cross the brain blood barrier of mice through the circulation system on the basis of in vivo animal tests. AgNPs tend to accumulate in mice organs such as liver, spleen, kidney and brain following intravenous, intraperitoneal, and intratracheal routes of administration. In this respect, AgNPs are considered a double-edged sword that can eliminate microorganisms but induce cytotoxicity in mammalian cells. This article provides a state-of-the-art review on the synthesis of AgNPs, and their applications in antimicrobial textile fabrics, food packaging films, and wound dressings. Particular attention is paid to the bactericidal activity and cytotoxic effect in mammalian cells.

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Section: Synthesis Of Agnps and Their Polymer Nanocompositesmentioning

confidence: 99%

Bactericidal and Cytotoxic Properties of Silver Nanoparticles

Liao

Tjong

2019

IJMS

760

436

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“…Di erent types of synthesis have been applied to preparing ZnO, such as precipitation method, sol-gel, hydrothermal, and so on [25][26][27][28]. In the present work, we report hierarchically porous single-crystal leaflike ZnO nanosheets, which were successfully synthesized through an easy, economical, microwave-assisted solvothermal process [29,30] pursued by annealing of the pre-synthesized material at 500 C for 3 hours in the air atmosphere.…”

Section: Introductionmentioning

confidence: 93%

Application of microwave-assisted synthesized leaf-like ZnO nanosheets as the ethanol sensor

2019

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In this study, leaf-like zinc oxide (ZnO) nanosheets were successfully synthesized by the microwave-assisted method through an easy, low-cost solvothermal process with annealing at 500 C. Characterization of the synthesized material revealed the mesoporous single-crystal leaf-like ZnO nanosheets with hexagonal wurtzite structure. Mesoporous and single-crystal structure of gas sensor could provide high surface area, which led to the di usion of gas molecules and improvement of gas sensitivity. Consequently, the gas-sensing function of the leaf-like ZnO nanosheets was tested for di erent types of Volatile Organic Compounds (VOCs). Sensitivity, stability, response, and recovery time of leaf-like ZnO nanosheets sensor for ethanol vapor were the best at 255 C. According to results, leaf-like ZnO nanosheets are a selective and sensitive sensor for ethanol vapor.

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“…Microwave sintering technology was adopted to sinter the compacted billets. This technology was enabled to retain the nanocrystalline structure even after sintering process (Nguyen et al, 2014;Tavakol et al, 2015). The average crystallite size of compacted as well as sintered solder alloy billets was analysed from the complete width at half maximum (FWHM) of the X-ray diffraction peakemploying the Williamson Hall analysis.…”

Section: Compaction Sintering and Characterization Of Milled Sn-07cmentioning

confidence: 99%

Study on low melting nanocrystalline Sn-0.7Cu solder alloy

Murthy¹,

Sivaprasad²,

Rao³

2018

Int. J. Eng. Sci. Tech

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Research was conducted to build up the minimal cost nano-crystalline Pb open solder alloy by means of superior strength and compact melting temperature. In this research, a minimal cost lead-liberated solder alloy of Sn-0.7Cu was selected. Elevated energy ball milling method was assumed for the manufacture of nano crystalline solder from this alloy. The milling was conducted for 100 hrs. The milled powders were considered for their crystallite size, changes in morphology as well as decline in its melting temperatures. The outcome reveals that for a milling time of 100 hrs the crystallite size was lessened from 131 nm to 36 nm. DSC evaluations reveal a steady transition from pointed exothermic peak in bulk alloy to broad depleted temperature summits at lessened particle sizes. Nano crystalline powder was compacted into billets with a 98% theoretical compaction density. Microwave sintering technology was adopted to sinter these compacted billets. A series of tests like SEM-EDS, XRD, DSC, salt spray fog corrosion studies, density measurements, mechanical properties like hardness, compression, shear and tensile tests were carried out on these solder billets. Results shows that conversion from micro to nano crystalline structure improved mechanical and corrosion resistance was noticed while lowering the melting temperature.

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Microwave-Assisted Synthesis of Silver Nanoparticles Using Chitosan: A Novel Approach

Cited by 21 publications

References 18 publications

Bactericidal and Cytotoxic Properties of Silver Nanoparticles

Bactericidal and Cytotoxic Properties of Silver Nanoparticles

Application of microwave-assisted synthesized leaf-like ZnO nanosheets as the ethanol sensor

Study on low melting nanocrystalline Sn-0.7Cu solder alloy

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