نتایج جستجو برای: zno nanoparticles x ray diffraction xrd

تعداد نتایج: 811747  

2004
Chia Ying Lee Tseung Yuen Tseng Seu Yi Li Pang Lin

Single crystalline zinc oxide (ZnO) nanowires have been grown on Si (100) substrates by a vapor-liquid-solid (VLS) process at temperatures in the range 850-950 °C in an inert atmosphere. The VLS-grown ZnO nanowires have been characterized in detail using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), transmission electron mi...

2011
Numan Salah Sami S Habib Zishan H Khan Adnan Memic Ameer Azam Esam Alarfaj Nabeel Zahed Salim Al-Hamedi

Nanoparticles of zinc oxide (ZnO) are increasingly recognized for their utility in biological applications. In this study, the high-energy ball milling (HEBM) technique was used to produce nanoparticles of ZnO from its microcrystalline powder. Four samples were ball milled for 2, 10, 20, and 50 hours, respectively. The structural and optical modifications induced in the 'as synthesized' nanomat...

2013
Nadia Febiana Djaja Rosari Saleh

Mn-doped nanocrystalline ZnO particles have been successfully synthesized at low temperature (80 ̊C) by the coprecipitation method using zinc sulfatehepta hydrate and NaOH. The structural and magnetic properties have been characterized using X-ray diffraction (XRD), Energy dispersive x-ray, vibrating sample magnetometer and electron spin resonance. XRD measurements revealed that the sample posse...

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: :physical chemistry research 0
asma karamipour payame noor university nahid rasouli payame noor university maryam movahedi payame noor university hossein salavti payame noor university

in this work, magnetically separable zno-znfe2o4-ppy nanocomposite as an efficient adsorbent was synthesized by two steps. at first, zinc oxide (zno) and znfe2o4 nanoparticles were synthesized using simple and facile precipitation method. then, zno-znfe2o4 mixed oxide was modified by polypyrrole (ppy). the adsorbent was characterized by x-ray diffraction (xrd), fourier transform infrared (ft-ir...

Journal: :health scope 0
saeed dehestani athar environmental and occupational health engineering department, faculty of medical sciences, tarbiatmooeswwsuowws{}}y, ir iran +98-2182883825, asilia_h@ modares.ac.ir hasan asilian environmental and occupational health engineering department, faculty of medical sciences, tarbiatmooeswwsuowws{}}y, ir iran +98-2182883825, asilia_h@ modares.ac.ir; environmental and occupational health engineering department, faculty of medical sciences, tarbiatmooeswwsuowws{}}y, ir iran +98-2182883825, asilia_h@ modares.ac.ir

background diatomite coated by nanoparticles of copper and zinc mixed oxides were used to investigate catalytic oxidation of carbon monoxide. objectives aim of this paper was to investigatediatomite performance as a supporting host to confine the cuo and zno nanoparticles and its catalytic activity for carbon monoxide oxidation. materials and methods the prepared catalysts were characterized by...

2012
Syed Ghazanfar Hussain Deming Liu Xintang Huang R K Sharma Sandeep Patel

In this work ZnO and Mn-doped ZnO nanocrystals were synthesized by one-step aqueous solution method. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray (EDX) analysis and photoluminescence (PL) spectroscopy have been used to characterize the samples in detail. The XRD studies revealed that the ZnO and Mn-doped ZnO had wurtzite structure (hexagonal). The composi...

2015
Ji Hun Park Yeong Ju Lee Jong-Seong Bae Bum-Su Kim Yong Chan Cho Chikako Moriyoshi Yoshihiro Kuroiwa Seunghun Lee Se-Young Jeong

Oxygen vacancy (VO) strongly affects the properties of oxides. In this study, we used X-ray diffraction (XRD) to study changes in the VO concentration as a function of the Co-doping level of ZnO. Rietveld refinement yielded a different result from that determined via X-ray photoelectron spectroscopy (XPS), but additional maximum entropy method (MEM) analysis led it to compensate for the differe...

The ZnO/SiO2 semiconductor nanophotocatalysis was synthesized via sol-gel method. Also, theplatinum particles were loaded on the ZnO/SiO2 nanoparticles by photoreductive method. Thestructure of catalyst was confirmed by X-ray diffraction (XRD), scanning electron microscopy(SEM) andfourier transform infrared spectroscopy (FT-IR). The XRD patterns of ZnO particlesdisplayed the nanoparticles have ...

2010
Farid Jamali Sheini Jai Singh Dilip S. Joag Mahendra A. More

The Cu/ZnO nanocomposite films have been synthesized by cathodic electrodeposition and characterized using X-ray diffractometer (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), photoluminescence (PL) and field emission microscope (FEM). The XRD pattern shows a set of well defined diffraction peaks, which could be indexed to the wurtzite hexagonal phase of ZnO. ...

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