نتایج جستجو برای: zinc oxide

تعداد نتایج: 238099  

2016
Karkeng Lim Muhammad Azmi Abdul Hamid Roslinda Shamsudin N.H. Al-Hardan Ishak Mansor Weesiong Chiu

In this paper, we address the synthesis of nano-coalesced microstructured zinc oxide thin films via a simple thermal evaporation process. The role of synthesis temperature on the structural, morphological, and optical properties of the prepared zinc oxide samples was deeply investigated. The obtained photoluminescence and X-ray photoelectron spectroscopy outcomes will be used to discuss the sur...

Journal: :applied biotechnology reports 0
ramin karimian applied biotechnology research center, baqiyatallah university of medical sciences, tehran, iran farideh piri department of chemistry, faculty of science, zanjan university, zanjan, iran seyed javad davarpanah applied biotechnology research center, baqiyatallah university of medical sciences, tehran, iran

the use of an inorganic phase in water-in-oil (w/o) microemulsion   has   received considerable attention recently for preparing metal oxide   nanoparticles. this is a technique, which allows preparation of ultrafine   metal oxide nanoparticles within the size range 40 to 80 nm. preparation of   nano zno and cr 2 o 3 studied, investigated in the inverse   microemulsion system. therefore the nuc...

Journal: :international journal of nano dimension 0
m. ghane department of microbiology, islamic azad university tonekabon branch ,tonekabon, iran. b. sadeghi department of chemistry, islamic azad university tonekabon branch, tonekabon, iran. a.r. jafari department of microbiology, islamic azad university tonekabon branch, tonekabon, iran. a.r. paknejhad department of physics, islamic azad university shabestar branch, iran.

in the present work, we report the synthesis of binary nano metal oxides such as zinc /copper oxide via novel dry synthetic methods such as thermal decomposition of oxalate precursor. the synthesis route involves facile solid-phase mechanochemical activation of a physical mixture of simple copper/zinc salts and oxalic acid, followed by calcination of the as-ground oxalate precursors at 450◦c. x...

2014
Shahin Kasraei Lida Sami Sareh Hendi Mohammad-Yousef AliKhani Loghman Rezaei-Soufi Zahra Khamverdi

OBJECTIVES Recurrent caries was partly ascribed to lack of antibacterial properties in composite resin. Silver and zinc nanoparticles are considered to be broad-spectrum antibacterial agents. The aim of the present study was to evaluate the antibacterial properties of composite resins containing 1% silver and zinc-oxide nanoparticles on Streptococcus mutans and Lactobacillus. MATERIALS AND ME...

Journal: Nanomedicine Journal 2017
Farzane Hoseyni Dowlatababdi Gholamreza Amiri, Maryam Mohammadi Sichani

The antimicrobial effect of metal nanoparticles such as zinc oxide and silver nanoparticles has been taken into great consideration separately during recent years. The useful application of these nanoparticles in the areas of medicine, biotechnology, and professional prevention of microbes motivated us. The aim of this study was to evaluate antibacterial activity properties of silver doped zinc...

افلاطونیان, محمدرضا, خاتمی, منصور, خاتمی, مهرداد, شریفی, ایرج, نادری فر, مهین, پورسیدی, شهرام, یعقوبی, هاجر,

Background: Nanoparticles are particles that have at least one dimension between 1 and 100 nanometers. Nanoparticles are a new generation of antimicrobial agents. Nanoparticles with antimicrobial activity, especially as a new class of biomedical materials for use in increasing the level of public health in daily life have emerged.  Zinc oxide nanoparticles have attracted a great attention due t...

Zinc oxide nanostructures are deposited on glass substrates in the presenceof oxygen reactive gas at room temperature using the radio frequency magnetronsputtering technique. In this research, the effects of zinc oxide sputtering pressure on thenanostructure properties of the deposited layer are investigated. The deposition pressurevaries from 7.5 to 20.5 mTorr. AFM resu...

دیانتی تیلکی, رمضانعلی , رستمعلی, احسان, ززولی, محمدعلی , علم قلیلو, مهدیه , یزدانی, جمشید ,

Background and purpose: Chrophenols represent one of the most abundant toxic compounds of industrial which are resistant to biodegradation and persist in the environment for long time. Sunlight is the source of many photochemical reactions. The present study aimed to determine degradation of 4-chlrophenol as persistent organic compound by sunlight in the presence of zinc oxide as a catalyst. M...

ژورنال: پوست و زیبایی 2021
Hassanzadeh Nemati, Nahid , Khateri Roodbordeh, Malahat ,

Background and Aim: Lesions of the skin can impair its vital function to protect humans against external pathogens. Therefore, producing a suitable wound dressing to repair injuries is always one of the challenges of researchers. The present study aims to Synthesize a hydrogel film for wound dressing applications. Methods: In this research, a hydrogel film of polyvinyl alcohol / hyaluronic a...

Journal: :Physical chemistry chemical physics : PCCP 2014
Robin Jude Vimal Michael Balaji Sambandam Thangavelu Muthukumar Manickam J Umapathy Periakaruppan T Manoharan

Silver doped zinc oxide nanoparticles are synthesized by a solution combustion method. The samples characterized by a variety of spectroscopic and other techniques clearly reveal the presence of silver nanoparticles as well as silver clusters. The silver in the two forms was identified by careful deconvolution of X-ray photoelectron spectral results. Their formation was also confirmed by the pr...

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