نتایج جستجو برای: green capping agent

تعداد نتایج: 395248  

2014
Muhammad Ajaz Hussain Abdullah Shah Ibrahim Jantan Muhammad Nawaz Tahir Muhammad Raza Shah Riaz Ahmed Syed Nasir Abbas Bukhari

BACKGROUND Green synthesis of nanomaterials finds the edge over chemical methods due to its environmental compatibility. Herein, we report green synthesis of silver nanoparticles (Ag NPs) mediated with dextran. Dextran was used as a stabilizer and capping agent to synthesize Ag NPs using silver nitrate (AgNO3) under diffused sunlight conditions. RESULTS UV-vis spectra of as synthesized Ag nan...

Davood Ghanbari, Shahab Khaghani, Shohreh Khaghani

Fe3O4 nanoparticles were synthesized in the presence of pepper extract as a capping agent via a hydrothermal method. Then palladium nanoparticles and Fe3O4-Pd nanocomposites were synthesized with the aid of pepper extract as a reducing agent. Vibrating Sample magnetometer illustrated that Fe3O4 nanoparticles have super paramagnetic behaviour. The photo catalytic behaviour of Fe3O4-Pd nanocompos...

2012
A. Rahdar

ZnS nanoparticles of different size have been synthesized using a colloidal particles method. ZnS nanoparticles prepared with capping agent (mercaptoethanol) then were characterized using X-ray diffraction (XRD) and UV-Vis spectroscopy. The particle size of the nanoparticles calculated from the XRD patterns has been found in the range 1.85-2.44nm. Absorption spectra have been obtained using UV-...

Journal: :Dalton transactions 2013
Sirshendu Ghosh Kajari Das Kaushik Chakrabarti S K De

Oleic acid capped monodisperse SnO(2) quantum dots (QDs) of size 2.7 nm were synthesized by thermal decomposition and oxidation of Sn(II)(oleate) complex in high boiling nonpolar solvent octadecene using oleic acid as a capping agent and N-methylmorpholine N-oxide as an oxidizing agent. FTIR, DSC and TGA were employed to understand the growth of the oleic acid capped SnO(2) QDs through the deco...

Journal: :iranian endodontic journal 0
masoud parirokh department of endodontic, school of dentistry, kerman university of medical sciences, kerman, iran. [email protected] saeed asgary department of endodontics, dental research center, school of dentistry, shahid beheshti medical university, tehran, iran mohammad jafar eghbal department of endodontics, dental research center, school of dentistry, shahid beheshti medical university, tehran, iran sally stowe facility coordinator, electron microscope unit, research school of biological sciences, australia national university, act, australia jamileh ghoddusi department of endodontic, school of dentistry, mashhad university of medical science, mashhad, iran

introduction: this study was carried out to investigate calcific tissue formation against mineral trioxide aggregate (mta) after pulp capping. materials and methods: the pulps of six teeth from four dogs were exposed and capped with mta. after extraction each tooth was sectioned into halves. each half was then further sectioned in the mesiodistal or buccolingual direction. calcified tissue of t...

Journal: :Catalysts 2022

The quest for eco-friendly synthetic routes that can be used the development of multifunctional materials, in particular water treatment, has reinforced use plant extracts as replacement solvents their reducing and capping agents during synthesis green derived materials. Amongst various nanoparticles, Zinc Oxide (ZnO) emerged one preferred candidates photocatalysis due to its optical properties...

Journal: :Quintessence international 2011
Brita Willershausen Ines Willershausen Armin Ross Sonja Velikonja Adrian Kasaj Maria Blettner

OBJECTIVE To evaluate the success rate of a calcium hydroxide-based direct capping agent in permanent teeth. METHOD AND MATERIALS A total of 1,075 permanent teeth were treated in this study. All patients received direct pulp capping with a calcium hydroxide-based agent. Inclusion criteria were teeth with healthy pulps, pulps with signs of reversible pulpitis, and a pulp chamber roof opening s...

2010
R. Geethalakshmi D. V. L. Sarada

There is an increasing commercial demand for nanoparticles due to their wide applicability in various areas such as electronics, catalysis, chemistry, energy, and medicine. Metallic nanoparticles are traditionally synthesized by wet chemical techniques, where the chemicals used are quite often toxic and flammable. In this work, we describe a cost effective and environment friendly technique for...

2014
Muthusamy Govarthanan Thangasamy Selvankumar Koildhasan Manoharan Rajiniganth Rathika Kuppusamy Shanthi Kui-Jae Lee Min Cho Seralathan Kamala-Kannan Byung-Taek Oh

Synthesis of silver nanoparticles (AgNPs) with biological properties is of vast significance in the development of scientifically valuable products. In the present study, we describe simple, unprecedented, nontoxic, eco-friendly, green synthesis of AgNPs using an Indian traditional farming formulating agent, panchakavya. Silver nitrate (1 mM) solution was mixed with panchakavya filtrate for the...

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