Thermal evolution study of nonmetallic impurities and surface passivation of Cu nanopowders produced via a DC thermal plasma synthesis

Krasovskii, Pavel V.; Самохин, А. В.; Fadeev, A. A.; Alexeev, N.

doi:10.1016/j.apt.2016.05.031

Cited by 11 publications

(6 citation statements)

References 25 publications

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“…Different methodologies have been employed to fabricate the nanoparticle with controllable properties such as shape and size; these include vapor deposition [13], electrochemical reduction [14], thermal decomposition [12, 15] and chemical reduction of copper salts [16, 17, 18, 19]. Although numerous chemical methods have been used to produce Cu-NPLs, the use of toxic chemicals in the production of Cu-NPLs limits their pharmaceutical and medical applications [20].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of copper nanoparticles using aqueous Tilia extract: antimicrobial and anticancer activities

Hassanien

Husein

Al-Hakkani

2018

Heliyon

134

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A cost-effective method for the biosynthesis of copper nanoparticles (Cu-NPLs) using Tilia extract under optimum conditions has been presented. The use of Tilia extracts for the synthesis of Cu-NPLs has been investigated for the first time. The Cu-NPLs are stable due to in situ bio-capping by the Tilia extract residues. Formation of metallic Cu was revealed by UV-vis and XRD analyses. UV-vis of Cu-NPLs showed an SPR characteristic peak at 563 nm (energy bandgap = 2.1 eV). Morphology and size of the as-prepared Cu-NPLs were determined using SEM and TEM studies. TEM observations show that the produced Cu-NPLs are hemispherical in shape with different diameters in the range 4.7–17.4 nm. The electrical conductivity of the Cu-NPLs was determined as 1.04 × 10−6 S cm-1 (at T = 120 K). The antimicrobial studies exhibited relatively high activity against pathogenic bacteria like Gram-positive & Gram-negative bacteria. Anticancer studies demonstrated the in vitro cytotoxicity value of Cu-NPLs against tested human colon cancer Caco-2 cells, human hepatic cancer HepG2 cells and human breast cancer Mcf-7 cells. To conclude, Cu-NPLs are promising in electronic devices and they possess a potential anticancer application for some human cancer therapy as well.

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Section: Introductionmentioning

confidence: 99%

Biosynthesis of copper nanoparticles using aqueous Tilia extract: antimicrobial and anticancer activities

Hassanien

Husein

Al-Hakkani

2018

Heliyon

134

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“…Применение высокочастотных (ВЧ) токов позволило эффективно решить ряд задач: в области синтеза материалов, создания новых источников электромагнитного излучения и плазменных генераторов и т. д. [1][2][3][4][5][6]. В настоящей работе представлены результаты исследования разработанного нами плазменного генератора, частота тока питания которого составляет 66 kHz и который обладает низкой эрозией электродов, высокой стабильностью разряда и образованного им плазменного потока.…”

Section: поступило в редакцию 21 сентября 2018 гunclassified

Генератор Плазмы С Магнитно-Вихревой Стабилизацией И Возможности Его Применения

Чурилов¹,

Николаев²,

Шичалин³

et al. 2019

Письма В Журнал Технической Физики

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Поступило в Редакцию 21 сентября 2018 г.Описаны конструкция плазменного генератора, параметры получаемой плазмы и возможности ее применения для синтеза нанодисперсных порошков и оптической эмиссионной спектроскопии. В основе работы устройства лежит дуговой разряд переменного тока (66 kHz) в струе аргона между охлаждаемыми водой металлическими электродами. Разряд стабилизируется изолирующим потоком газа (гелия, азота, воздуха), который подается тангенциально к оси разряда, и осевым магнитным полем. Плазма между электродами имеет форму цилиндра, удаленного от стенок камеры. Температура и электронная концентрация в сечении плазменного цилиндра изменяются вдоль радиуса и приобретают максимальное и минимальное значение.

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“…When the Cu nanopowders were prepared using distilled water or ethylene glycol, the particle size was <100 nm, as shown in figure 4b and c. This is because the explosion and condensation rates in liquid were higher than those observed under an Ar atmosphere; thus, the particle growth was inhibited. Additionally, the aggregation between the particles was hindered, which results in improved dispersion of the powders [29,30]. Figure 5 shows the SEM-EDS results of Cu nanopowders prepared in both distilled water and ethylene glycol.…”

Section: Preparation Of Cu Nanopowdersmentioning

confidence: 99%

Preparation of Cu nanoparticles by a pulsed wire evaporation process for conductive ink applications

2019

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In the present study, Cu colloidal nanoparticles and nanopowders were successfully synthesized by a pulsed wire evaporation process. Cu-based nano-inks were prepared by mixing Cu nanoparticles with acrylic resin and solvent. Cu nanoparticles with a particle size of < 20 nm were uniformly dispersed in ethylene glycol. The Cu nanopowders were successfully coated with an organic solvent composed of a hydrocarbon compound. This organic coating effectively inhibited the oxidation of Cu nanopowders. In addition, the stability of dispersion of Cu nanoparticles in the inks was improved by a ball-milling process. The electrical conductivity of the prepared Cu nano-inks was 10-28 µS cm −1 for 20-40 wt% of Cu.

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Thermal evolution study of nonmetallic impurities and surface passivation of Cu nanopowders produced via a DC thermal plasma synthesis

Cited by 11 publications

References 25 publications

Biosynthesis of copper nanoparticles using aqueous Tilia extract: antimicrobial and anticancer activities

Biosynthesis of copper nanoparticles using aqueous Tilia extract: antimicrobial and anticancer activities

Генератор Плазмы С Магнитно-Вихревой Стабилизацией И Возможности Его Применения

Preparation of Cu nanoparticles by a pulsed wire evaporation process for conductive ink applications

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