نتایج جستجو برای: capping agent

تعداد نتایج: 258723  

Gharibshahian, , Tafreshi, ,

KTiOPO4(KTP) nanoparticles were synthesized by co-precipitation method using L-Alanine as capping agent. Different mole ratios of L-Alanine used to study on the effect of capping agent concentration on size, structural quality and morphology of KTP nanoparticles. XRD analysis confirmed the formation of orthorhombic phase of obtained KTP nanoparticles. Using L-Alanine as capping agent results in...

Journal: :iranian endodontic journal 0
saeed asgary department of endodontics, iranian center for endodontic research, dental school, shaheed beheshti university of medical sciences, tehran, iran. [email protected] masoud parirokh department of endodontics, dental school, kerman university of medical sciences, kerman, iran mohammad jafar eghbal department of endodontics, iran center for dental research, dental school, shaheed beheshti university of medical sciences, tehran, iran jamileh ghoddusi department of endodontic department, dental school, mashad university of medical sciences, mashad, iran

introduction : this investigation evaluates the effects of mineral trioxide aggregate (mta), calcium hydroxide (ch) and calcium enriched mixture (cem) as pulp capping materials on dental pulp tissues. materials and methods: the experimental procedures were performed on eighteen intact dog canine teeth. the pulps were exposed. cavities were randomly filled with cem, mta, or ch followed by glass ...

Journal: :international journal of nano dimension 0
a. dinesh karthik pg department of chemistry,k. m. g. college of arts and science, gudiyattam, 635 803 vellore.dt.tamil nadu, india. k. geetha pg and research department of chemistry, muthurangam govt. arts college (autonomous), vellore - 632 002,tamil nadu, india.

a simple method has been employed to synthesize copper and copper oxide nanoparticles from copper (ii) succinate precursor by thermal decomposition method using oleylamine as a capping agent. the particles synthesized with oleylamine and triphenylphosphine were well dispersed nanoparticles obtained from x-ray diffraction (xrd). the synthesized copper nanoparticles were characterized by uv-visib...

Journal: :international journal of nano dimension 0
a. radhakrishnan nanoscience research lab, department of chemistry devaswom board college sasthamcotta, kollam, kerala , india, pin 690522. p. rejani nanoscience research lab, department of chemistry devaswom board college sasthamcotta, kollam, kerala , india, pin 690522. b. beena nanoscience research lab, department of chemistry devaswom board college sasthamcotta, kollam, kerala , india, pin 690522.

nano structured materials have wide range of applications due to their interesting size-dependent chemical and physical properties compared to particles of size in the range of micrometer. copper oxide nano materials are of interest on account of their potential uses in many technological fields. in this study  cuo nanoparticles were synthesized via simple sol gel method using basic cuso4 as we...

B. Naeimi Nezamabad Farhad Yazarlou M. Karimi Mazyar Ahmadi Golsefidi, Mehran Naeimi Nezamabad

In this work firstly CoFe2O4 nanoparticles were synthesized via a hydrothermal method. The temperature, surfactant and capping agent effects on the size of CoFe2O4 nanoparticles were investigated. 2-hydroxyacetophenone used as a good capping agent to produce cubic-like nanostructure. When SDBS used as surfactant, particles had spherical morphology. Nanoparticle was studied by scanning electron ...

Journal: :journal of nanostructures 2013
y. vahidshad r. ghasemzadeh a. irajizad s. m. mirkazemi

in this investigation, cuins2 ternary compound was synthesized by injection of thiourea solution into a hot copper-indium solution. the cucl, incl3 along with (sc (nh2)2) were used as a precursor dissolved in high boiling point solvent such as oleylamine (ch(ch2)17nh2) and oleic acid (ch(ch2)16cooh) as a coordination solvent and capping agent, respectively. the size, distribution and shape were...

2007
Y. L. Wu F.Y.C. Boey X. T. Zeng X. H. Zhang

Nano-crystalline ZnO particles were synthesized using alcoholic solutions of zinc acetate dihydrate through a colloidal process. Five types of capping agents: 3-aminopropyl trimethoxysilane (Am), tetraethyl orthosilicate (TEOS), mercaptosuccinic acid (Ms), 3-mercaptopropyl trimethoxysilane (Mp) and polyvinylpyrrolidone (Pv) were added at the first ZnO precipitation time (first PPT) to limit the...

Journal: :Journal of the American Chemical Society 2010
Jie Zeng Yiqun Zheng Matthew Rycenga Jing Tao Zhi-Yuan Li Qiang Zhang Yimei Zhu Younan Xia

This paper provides direct evidence to support the role of a capping agent in controlling the evolution of Ag seeds into nanocrystals with different shapes. Starting with single-crystal seeds (spherical or cubic in shape), we could selectively obtain Ag octahedrons enclosed by {111} facets and nanocubes/nanobars enclosed by {100} facets by adding sodium citrate (Na(3)CA) and poly(vinyl pyrrolid...

In this research cobalt ferrite (CoFe2O4) nano-crystalline powders were prepared by simple chemical precipitation method using cobalt sulfate. The CoFe2O4 nanoparticles were characterized by X-ray diffraction, scanning electron microscopy  and Fourier transform infra-red spectroscopy. The crystallite size of CoFe2O4 nanoparticles was calculated by Debye–Scherrer formula. The effect of precursor...

Journal: :Journal of materials chemistry. A, Materials for energy and sustainability 2022

Core–shell Au NPs@MOF-808 architecture has been synthesized using sustainable conditions. NPs capping agent removal optimized to boost the catalytic efficiency of composite material.

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