نتایج جستجو برای: crystalline zno

تعداد نتایج: 58983  

Journal: :Journal of biomedical materials research. Part A 2008
Gang Zhou Yubao Li Wei Xiao Li Zhang Yi Zuo Jing Xue John A Jansen

Nanohydroxyapatite (n-HA)/zinc oxide (ZnO) complex was synthesized by a direct precipitation method, and the antibacterial capability and antibacterial mechanism of this complex were investigated in this article. Transmission electron microscope (TEM), Fourier transform infrared, X-ray photoelectronic spectroscopy (XPS), and X-ray diffraction (XRD) were used to analyze the materials. In additio...

Journal: :Materials Chemistry and Physics 2023

Zeolite Na-A supported ZnO nanocomposites (ZnO/Zeolite NCs) were synthesized at low temperature (70 °C) via the sol-gel process and characterized for thermal, structural, morphological, adsorption, optical bonding properties. Both XRD microscopy imaging results indicated that obtained nanopowders crystalline in nature with no structural collapse revealed. The nanoparticles occurred mainly on su...

A. Arefpour, A. Monshi A. Saidi T. Khayamian

Mold powders in continuous casting of steel contain fluorine through mainly CaF2 and occasionally NaF and Na3AlF6. Fluorine develops dangerous gases such as SiF4 and HF at high temperatures. In this study, CaF2 is partly replaced by substances such as Na2CO3, ZnO and Fe2O3.Sulfur free Portland cement clinker containing gypsum was used as a new product base. These additions developed comparable ...

Journal: :Nanoscale 2015
Y Ning L A Fielding T S Andrews D J Growney S P Armes

Occlusion of copolymer particles within inorganic crystalline hosts not only provides a model for understanding the crystallisation process, but also may offer a direct route for the preparation of novel nanocomposite materials with emergent properties. In the present paper, a series of new well-defined anionic diblock copolymer nanoparticles are synthesised by polymerisation-induced self-assem...

Journal: :Nano letters 2014
Chun-Wei Huang Jui-Yuan Chen Chung-Hua Chiu Wen-Wei Wu

One dimensional metal oxide nanostructures have attracted much attention owing to their fascinating functional properties. Among them, piezoelectricity and photocatalysts along with their related materials have stirred significant interests and widespread studies in recent years. In this work, we successfully transformed piezoelectric ZnO into photocatalytic TiO2 and formed TiO2/ZnO axial heter...

Journal: :Materials research express 2022

Abstract ZnO-Al2O3-MgO-TiO2-SiO2-Ta2O5 (ZnO-based) linear resistance ceramics with doping different molar percentages of Ta2O5 were prepared by a conventional method. Effects additives on the phase composition, microstructures, and electrical properties ZnO-based resistive investigated. The results show that can refine grains main crystalline ZnO secondary ZnAl2O4 in terms microstructure, also ...

Journal: :Advanced Materials Interfaces 2021

Heat conduction in ceramics is attributed to phonon propagation, which can be strongly suppressed at boundaries. Usually, polycrystals show lower thermal conductivity (?) than single crystals, as contain many grain For functional applications management technologies, with low are required. While boundary engineering effective for reducing ?, its utilization limited by the fact that other proper...

In this study nano-crystalline ZnO particles were synthesized by microwave-assisted solution combustion method. Zinc nitrate and urea were used as oxidizer and fuel, respectively. The effect of fuel to oxidizer (F/O) ratio on ZnO powder properties was investigated by using different urea/nitrate ratios. X-ray diffractometer, scanning electron microscopy and fourier transform infra-red were used...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

pure and zno-doped ni0.1co0.9fe2o4 catalyst were prepared by co-precipitation method and thermal decomposition in air calcinated at 400-700°c and that treated with different amounts of zinc nitrate (0.46-2.25 w% zno). x-ray powder diffractometry, scanning electron microscopy (sem) and bet analysis of nitrogen adsorption isotherms investigated the crystalline bulk structure and the surface area ...

Journal: :Energies 2021

Transition metal dichalcogenide (TMD) MoS2 and WS2 monolayers (MLs) deposited atop of crystalline zinc oxide (ZnO) graphene-like ZnO (g-ZnO) substrates have been investigated by means density functional theory (DFT) using PBE GLLBSC exchange-correlation functionals. In this work, the electronic structure optical properties studied hybrid nanomaterials are described in view influence thickness o...

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