نتایج جستجو برای: ag nanoparticles

تعداد نتایج: 146569  

2015
SEELI BALAJI

The current study manifested that the aqueous flower extract of Peltophorum pterocarpum contain bioactive compounds, is found to be responsible for bioreduction during the synthesis of silver nanoparticles The synthesis of silver nanoparticles occurred under the exposure of the flower extract to 1mM silver nitrate aqueous solution .During this process the complete reduction was observed nearly ...

Journal: :Journal of the Egyptian Society of Parasitology 2015
Halim A Saad Mohamed I Soliman Ahmed M Azzam B Mostafa

Nanoparticles (NPs) have received more attention as antiparasitic agents. In the present study, silver and copper nanoparticles were synthesized and characterized using scanning electron microscopy (SEM), transmission electron microscope (TEM) and X-ray fluorescence (XRF). The antiparasitic activity of Ag and CuO nanoparticles were tested against two of the most environmentally spread parasites...

2015
Samuele Lilliu Mejd Alsari Oier Bikondoa J. Emyr Macdonald Marcus S. Dahlem

The incorporation of noble metal nanoparticles, displaying localized surface plasmon resonance, in the active area of donor-acceptor bulk-heterojunction organic photovoltaic devices is an industrially compatible light trapping strategy, able to guarantee better absorption of the incident photons and give an efficiency improvement between 12% and 38%. In the present work, we investigate the effe...

2013
Petr SUCHOMEL Ales PANACEK Robert PRUCEK Radek ZBORIL Libor KVITEK

This work is aimed at preparation of small silver nanoparticles (Ag NPs) with various sizes using two-step preparation method. The silver bromide nanoparticles were prepared in the first step and they were reduced to metal silver nanoparticles in the second step. Size of prepared silver nanoparticles was controlled by using of several modifiers. Two surfactants (SDS and Tween 80) and two natura...

2016
Taher A. Salaheldin Sherif M. Husseiny Abdullah M. Al-Enizi Ahmed Elzatahry Alan H. Cowley

Silver nanoparticles have been synthesized by subjecting a reaction medium to a Fusarium oxysporum biomass at 28 °C for 96 h. The biosynthesized Ag nanoparticles were characterized on the basis of their anticipated peak at 405 nm using UV-Vis-NIR spectroscopy. Structural confirmation was evident from the characteristic X-ray diffraction (XRD) pattern, high-resolution transmission electron Micro...

Journal: :Dalton transactions 2016
Mahesh K Gangishetty Robert W J Scott Timothy L Kelly

Triangular silver nanoparticles are promising materials for light harvesting applications because of their strong plasmon bands; these absorption bands are highly tunable, and can be varied over the entire visible range based on the particle size. A general concern with these materials is that they are unstable at elevated temperatures. When thermally annealed, they suffer from changes to the p...

2017
Pavel Aleksandrovich Kotin Sergey Sergeevich Bubenov Natalia Evgenievna Mordvinova Sergey Gennadievich Dorofeev

We report the synthesis of colloidal CdSe quantum dots doped with a novel Ag precursor: AgCl. The addition of AgCl causes dramatic changes in the morphology of synthesized nanocrystals from spherical nanoparticles to tetrapods and finally to large ellipsoidal nanoparticles. Ellipsoidal nanoparticles possess an intensive near-IR photoluminescence ranging up to 0.9 eV (ca. 1400 nm). In this artic...

Journal: :Nanoscale 2016
Jianwei Zheng Xinping Duan Haiqiang Lin Zhengqiang Gu Huihuang Fang Jianhui Li Youzhu Yuan

A confined Ag nanomaterial in the channels of herringbone multi-walled carbon nanotubes (Ag-in/hCNT) was effectively prepared. The space restriction induces morphological changes of Ag nanoparticles into rough nanowires with an estimated aspect ratio of 60 : 8 (nm/nm). Dihydrogen activation is enhanced through the vacancy-enriched wire-like Ag nanocatalyst, as well as the confinement effect. Th...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2013
Hai-Ying Qiao Mei-Lan Hong Xue Tian Li-Jiao Huang Xia Chu

In this work, we developed a label-free, homogeneous surface-enhanced Raman-scattering (SERS) platform for the rapid, simple and sensitive detection of Ag(+) by using the unmodified gold nanoparticles (AuNPs). It utilizes the different absorption properties of single-strand DNA (ssDNA) and double-strand DNA (dsDNA) on citrate-coated AuNPs and specific interactions between Ag(+) and cytosine-cyt...

Journal: :Optics express 2016
Jae-Phil Shim Sang-Bae Choi Duk-Jo Kong Dong-Ju Seo Hyung-Jun Kim Dong-Seon Lee

Ag nanoparticles are embedded in intentionally etched micro-circle p-GaN holes by means of a thermal agglomeration process to enhance the light absorption efficiency in InGaN/GaN multi-quantum-well (MQW) solar cells. The Ag nanoparticles are theoretically and experimentally verified to generate the plasmon light scattering and the localized field enhancement near the MQW absorption layer. The e...

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