نتایج جستجو برای: magnetic graphene oxide nanocomposite

تعداد نتایج: 554634  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پایه 1392

در این تحقیق، از روش آسان و موثر رفلاکس جهت سنتز نانوذرات مس ایندیوم سولفید استفاده شد و نانو ساختار های متنوع روی اکسید با بکارگیری روش هیدروترمال سنتز شدند. سپس با کمک یک فرایند حرارتی نانوکامپوزیت zno/cis تهیه شد. محصولات به وسیله روش های پراش اشعه ایکس (xrd)، طیف سنجی زیر قرمز (ft-ir)، میکروسکوپ الکترونی روبشی (sem) و طیف سنجی uv- visمورد شناسایی قرار گرفتند. تصاویر sem، مورفولوژی نانوذره ب...

بابایی لشکریانی, الهام, جنیدی جعفری, احمد, رضایی کلانتری, روشنک, غلامی, میترا,

Background and purpose: Nowadays, amoxicillin is one of the most important and most frequently used antibiotics that has received especial attention as it causes resistance in bacteria. This compound enters the aquatic environment through different routes including sewage and waste disposal of medical centers, veterinary centers and industries. The aim of this study was to evaluate the performa...

Journal: :The Analyst 2012
Meiling Liu Linping Wang Jianhui Deng Qiong Chen Yuzhen Li Youyu Zhang Haitao Li Shouzhuo Yao

A new ferrocene derivative (1-[(4-amino) phenylethynyl]ferrocene, Fc-NH(2)) was synthesized for the first time. The ferrocene derivative molecule contained the phenylethynyl skeleton, ferrocene and amino groups with excellent electrochemical properties. The graphene/Fc-NH(2) nanocomposite was prepared by mixing graphene solution and Fc-NH(2) solution in one pot and the nanocomposite was utilize...

2013
Shaolin Zhang Woochul Yang

Graphene has been demonstrated as a potential gas sensor material by many researches [1,2]. However, the strong binding energy between graphene and analyte molecules leads to an inefficient desorption and subsequently a poor reliability on sensing performance. Besides, the lack of semiconducting property of graphene also disables the modulation of the transport characteristics through light irr...

Journal: :journal of nanostructures 2015
f. azizi h. jahangiri

graphene nanostructures were synthesized by hummer method. 1, 3, 5 and 7 wt% of graphene nanostructures were suspended in certain amount of acetone on a mechanical stirrer and stirred then added to epoxy resin. after 4 hours, solution and graphene platelets (gps) were prepared. nanostructures were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem ), fourier transform i...

Journal: :journal of ultrafine grained and nanostructured materials 2015
elham kamali heidari abolghasem ataei mahmoud heydarzadeh sohi jang-kyo kim

fuel cells, secondary batteries and capacitors are among many promising energy storage devices. in particular, supercapacitors have attracted much attention because of their long life cycle and high power density. graphene/nickel ferrite(g-nf) based supercapacitors were successfully fabricated through a one-step facile solvothermal route. effects of synthesis conditions i.e. solvothermal time a...

Journal: :physical chemistry research 0
mohhamad mahdi heyhat assistance professor salimeh kimiagar islamic azad university- central tehran branch - tehran - iran narjes ghanbaryan sani gasem abad master student elnaz feyzi master student

graphene oxide was prepared using modified hummers method. stable ethylene-glycol nanofluids containing graphene oxide nanosheets were provided. nd: yag pulsed laser was applied to prepare reduced nanofluids. experimental results revealed that thermal conductivity of the nanofluids is increased with increasing the concentration of graphene oxide (go) in ethylene glycol. the enhancement ratio of...

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