نتایج جستجو برای: tio2 sio2chitosan nanocomposite

تعداد نتایج: 35557  

2013
Seishi Abe

This study investigates the preparation of InSb-added TiO2 nanocomposite films by RF sputtering. The optical absorption spectra are obviously shifted to visible and near-infrared regions. High-resolution transmission electron microscopy indicates that sphere-shaped InSb nanocrystals with a size of about 15 nm are dispersed in a matrix. The X-ray diffraction result reveals that the matrix forms ...

2012
Vojka Žunič

An efficient photocatalytic material TiO2/Pt was prepared via the sonochemical synthesis followed by the thermal treatment. The TiO2/Pt nanocomposite was able to photocatalytically degrade the azo dye methylene blue (MB) under UV (ultraviolet) and Vis (visible) irradiation. The enhanced photocatalytic activity of Pt/TiO2 for methylene blue degradation is attributed to the following factors; to ...

2017

Direct methanol fuel cells (DMFCs) are considered to be one of the most promising candidates for portable and stationary applications in the view of their advantages such as high energy density, easy manipulation, high efficiency and they operate with liquid fuel which could be used without requiring any fuel-processing units. Electrolyte membrane of DMFC plays a key role as a proton conductor ...

Journal: :nanomedicine journal 0
mohammad reza gaeeni laser and optics research school, nuclear science and technology research institute, aeoi, north karegar, tehran, iran photonic laboratory, physics department, kharazmi university,tehran, iran marzieh tohidian faculty of medicine, tehran university of medical sciences, pour-sina ave, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) morteza sasani ghamsari laser and optics research school, nuclear science and technology research institute, aeoi, north karegar, tehran, iran mohammad hossein majles ara photonic laboratory, physics department, kharazmi university,tehran, iran

objective(s):  in our study, graphene oxide-tio2 nanocomposite (go/tio2) was prepared and used for the enrichment of rutin from real samples for the first time.  materials and methods:   the synthesized go/tio2 was characterized by x-ray diffraction, scanning electron microscopy, and ft-ir spectra.  the enrichment process is fast and highly efficient. the factors including contact time, ph, and...

Journal: :European journal of orthodontics 2013
Maryam Poosti Baratali Ramazanzadeh Mojtaba Zebarjad Parisa Javadzadeh Mahboubeh Naderinasab Mohammad T Shakeri

Nanofillers can reduce enamel demineralization without compromising physical properties of the composite. The aim of this study was to evaluate shear bond strength (SBS) and antibacterial effects of an orthodontic composite after adding titanium oxide (TiO2) nanoparticles. Light cure orthodontic composite paste (Transbond XT) was blended with TiO2 nanoparticles. A total of 30 extracted premolar...

2017
V. Raj

Direct methanol fuel cells (DMFCs) are considered to be one of the most promising candidates for portable and stationary applications in the view of their advantages such as high energy density, easy manipulation, high efficiency and they operate with liquid fuel which could be used without requiring any fuel-processing units. Electrolyte membrane of DMFC plays a key role as a proton conductor ...

Journal: :international journal of nanoscience and nanotechnology 2012
a. nasiri m. shariaty-niasar shariaty-niasar z. akbari

improving barrier properties through the use of nanocomposites is an important area of research, especially for the food packaging industry. in this work, titanium dioxide (tio2 )/low density poly ethylene (ldpe) nanocomposites were synthesized as the oxygen barrier layers through the co-extrusion process. the oxygen permeability of the nanocomposite with 4% of tio2 decreased for about 16% comp...

In order to improve the efficiency and rate of heat transfer in heat exchangers, various techniques such as increasing the heat transfer coefficient are proposed. This study is devoted to the investigation of heat transfer coefficient variations due to the addition of CuO, TiO2 and CuO/TiO2 nanoparticles into a shell and tube heat exchanger. CuO/TiO2 nanocomposite was synthesized using mechanic...

2009
Le Ha Chi Nguyen Nang Dinh Pham Duy Long Dang Tran Chien Tran Thi Chung Thuy

Recently, the conjugated polymer – inorganic nanocomposites have been increasingly studied due to the potential applications of these advanced materials in developing optoelectronic devices. In this work nanocomposite materials thin films based on poly [2-methoxy-5-(2’-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and nanocrystalline TiO2 (nc-TiO2) have been fabricated. The photoluminescenc...

2014
Dionisios Panagiotaras Elias Stathatos

Sol-gel method has been used to fabricate nanocomposite films on glass substrates composed halloysite clay mineral and nanocrystalline TiO2. The methodology for the synthesis involves a simple chemistry method utilized nonionic surfactant molecule as pore directing agent along with the acetic acid-based solgel route with the absence of water molecules. The thermal treatment of composite films a...

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