نتایج جستجو برای: zinc oxide zno

تعداد نتایج: 251434  

2012
Nur Syafinaz Ridhuan Khairunisak Abdul Razak Zainovia Lockman Azlan Abdul Aziz

In this study, zinc oxide (ZnO) nanorod arrays were synthesized using a simple hydrothermal reaction on ZnO seeds/n-silicon substrate. Several parameters were studied, including the heat-treatment temperature to produce ZnO seeds, zinc nitrate concentration, pH of hydrothermal reaction solution, and hydrothermal reaction time. The optimum heat-treatment temperature to produce uniform nanosized ...

2014
Hyun-U Ko Seongcheol Mun Seung-Ki Min Gi-Woo Kim Jaehwan Kim

This paper reports a hybrid nanocomposite of well-aligned zinc oxide (ZnO) nanorods on cellulose and its strain sensing behavior. ZnO nanorods are chemically grown on a cellulose film by using a hydrothermal process, termed as cellulose ZnO hybrid nanocomposite (CEZOHN). CEZOHN is made by seeding and growing of ZnO on the cellulose and its structural properties are investigated. The well-aligne...

Journal: :Crystal growth & design 2012
Xiaobin Xu Min Wu Michael Asoro P J Ferreira D L Fan

Zinc Oxide (ZnO) nano-superstructures (NSSs) have attracted intense research interests due to their large surface areas and unique properties. In this work, we report an original approach to synthesize ZnO NSSs in a one-step manner with a hydrothermal method. The crystalline structures and growth mechanism can be understood by surface energy calculations. The reaction kinetics was investigated ...

2011
Carla Verissimo Alireza Abbaspourrad Kristen Sunter Federico Capasso Stanislav Moshkalev David Weitz

Zinc oxide is a very interesting material for several technological applications. The properties of ZnO materials have been investigated and the influence of the 3D structure has been evaluated. Controlling experimental parameters is possible to obtain branched structures, which results in the preparation of materials presenting high surface area. Herein, we present a hydrothermal procedure to ...

2017
Yurong Jiang Xingbing Liu Fangmin Cai Hairui Liu

The feather-like hierarchical zinc oxide (ZnO) was synthesized via successive ionic layer adsorption and reaction without any seed layer or metal catalyst. A possible growth mechanism is proposed to explain the forming process of ZnO feather-like structures. Meanwhile, the photo-electronic performances of the feather-like ZnO have been investigated with the UV-vis-NIR spectroscopy, I-V and I-tm...

2014
Dario Zappa Simone Dalola Guido Faglia Elisabetta Comini Matteo Ferroni Caterina Soldano Vittorio Ferrari Giorgio Sberveglieri

Zinc oxide (ZnO, n-type) and copper oxide (CuO, p-type) nanowires have been synthesized and preliminarily investigated as innovative materials for the fabrication of a proof-of-concept thermoelectric device. The Seebeck coefficients, electrical conductivity and thermoelectric power factors (TPF) of both semiconductor materials have been determined independently using a custom experimental set-u...

Journal: :Acta chimica Slovenica 2015
Jincheng Fan Tengfei Li Hang Heng Berislav Markovič Igor Markovič

Zinc oxide (ZnO) microrods were fabricated on graphene/SiO(2)/Si substrate by a simple hydrothermal route. The obtained products were characterized using X-ray powder diffraction, scanning electron microscopy, energy dispersive X-ray spectrometry, photoluminescence and UV-visible spectrometry. Microrods exhibits hexagonal wurzite structure. Some ZnO clusters and twinned ZnO structures were foun...

2016
Saurav Kumar Sudeshna Bagchi Senthil Prasad Anupma Sharma Ritesh Kumar Rishemjit Kaur Jagvir Singh Amol P Bhondekar

Zinc oxide (ZnO) and bacteriorhodopsin (bR) hybrid nanostructures were fabricated by immobilizing bR on ZnO thin films and ZnO nanorods. The morphological and spectroscopic analysis of the hybrid structures confirmed the ZnO thin film/nanorod growth and functional properties of bR. The photoactivity results of the bR protein further corroborated the sustainability of its charge transport proper...

Journal: :زیست شناسی جانوری تجربی 0
کاظم پریور استاد گروه زیست شناسی جانوری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران نسیم حیاتی رودباری استادیار گروه زیست شناسی جانوری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران علیرضا بدیعی دانشیار دانشکده شیمی، دانشگاه تهران رقیه تقی زاده حاجی آقا دانشجوی کارشناسی ارشد زیست شناسی جانوری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران

abstract increase in the use of nano zinc oxide in medicine, manufacturing cosmetic products and research, have raised the questions about their toxicity. zinc has direct role in growth, maturation and ovulation through influence on production of estradiol and progesterone. in this study the effects of nano zinc oxide on oogenesis of adult nmri mouse strain have been investigated. the adult fem...

, A. R. Mahjoub E. Kowsari I. Yavari M. Movahedi

In this paper, synthesis of the flower-like zinc oxide was performed using microwave assisted dicationic ionic liquid [mmp(im)2 ]Br2 . The polycrystalline flower-like zinc oxide nanostructure was obtained when a suitable mole ratio (ionic liquid /zinc acetate) and short duration microwave was used. X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL) spectra w...

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