نتایج جستجو برای: tio2 sio2chitosan nanocomposite

تعداد نتایج: 35557  

2016
Shahab Ahmadi Iman Mohammadi S. K. Sadrnezhaad

Article history: Received 17 July 2015 Revised 18 December 2015 Accepted in revised form 19 December 2015 Available online 21 December 2015 The main challenges of biological implants are suitable strength, adhesion, biocompatibility and corrosion resistance. This paper discusses fabrication, characterization and electrochemical investigation of anodized Ti6Al4V without and with a hydroxyapatite...

Journal: :journal of nanostructures 2015
b. kaleji m. mousaei h. halakouie a. ahmadi

in this work firstly zno nanoparticles were synthesized via a simple precipitation method. at the second step titanium dioxide and silicon dioxide shell were synthesized on the core. for preparation zno-tio2-sio2 the sol product was calcinated at 500 ºc for 2h. properties of the product were examined by x-raydiffraction pattern (xrd), scanning electron microscope (sem) and fourier transform inf...

Journal: :analytical and bioanalytical chemistry research 0
morteza bahram department of chemistry, faculty of science, urmia university, urmia, iran saed salami department of chemistry, faculty of science, urmia university, urmia, iran mehdi moghtader department of chemistry, faculty of science, urmia university, urmia, iran peyman najafi moghadam department of chemistry, faculty of science, urmia university, urmia, iran amir reza fareghi department of chemistry, faculty of science, urmia university, urmia, iran masoumeh rasoli department of science, payame noor university, urmia branch, urmia, iran samaneh salimpoor

the photocatalytic degradation of two anionic azo dyes acid red88 (ar 88) and acid orange 7 (ao7) was investigated in aqueous solution using a tio2-containing hydrogel and uv light. the ph-sensitive hydrogel poly (styrene-alt-maleic anhydride) (psma), was synthesized and crosslinked in the presence of melamine and tio2 nanoparticles which results in entrapment of tio 2 into the melamine-grafted...

2013
Dongfang Zhang

Heterogeneous TiO2/Cu2O nanocomposite was synthesized for photocatalysis through surface impregnation in conjunction with the environmentally friendly soft chemical reduction strategy. The detailed structural, compositional, optical and photoelectrochemical properties of the obtained products are analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-Vis diffuse refl ec...

Journal: :Nanoscale 2013
Bo Hao Yong Yan Xiaobo Wang Ge Chen

We fabricated a sandwich-like branched-polyethyleneimine (b-PEI)/TiO2/Au/graphene oxide (GO) nanocomposite through a biomimetic layer-by-layer co-mineralization approach, and the polymer b-PEI was believed to act as both an inducing agent for the hydrolysis of titanium bis(ammonium lactato)-dihydroxide (Ti-BALDH) and a reducing agent for the reduction of HAuCl4 in the synthetic procedure. Upon ...

Journal: :international journal of new chemistry 0

a novel zr,ce-tio2/sio2 nanocomposite thin film was successfully prepared with various amounts of zr4+ and ce4+ as codopant ions for self-cleaning applications. a thin film was coated on a tile substrate by dip-coating and porous zr,ce-tio2/sio2 was obtained after heat treatment for 2 hours at 500 °c. the sem images and xrd pattern showed that the optimum amount of doping ions in relation to ti...

Journal: :international journal of nanoscience and nanotechnology 2011
e. pipelzadeh m. valizadeh derakhshan a. a. babaluo m. haghighi a. tavakoli

the effect of ethanol-water media on the synthesis of ag/tio2 nanocomposite was investigated with 0.05, 0.1 and 0.5 (wt.%) of ag content. ethanol was used as hole-scavenger enhancing the photodecomposition of ag+ ions under illumination of near-uv light. the nanocomposites were further calcined to 300˚c and 400˚c under controlled atmosphere. the synthesized nanocomposites were tested for photoc...

2007
Ryan O’Hayre Marian Nanu Joop Schoonman Albert Goossens

3D CuInS2/TiO2 nanocomposite solar cell performance is strongly influenced by several structural factors, including cell thickness, buffer layer thickness, and the morphology of the TiO2 nanoparticulate matrix. To delineate the effect of these structural factors on photovoltaic performance, a series of parametric studies are performed where a single structural parameter is varied (TiO2 nanopart...

Journal: :iranian journal of environmental sciences 0
pardeep singh department of chemistry, indian institute of technology (bhu), varanasi-221005 india a. borthakur centre for studies in science policy, jawaharlal nehru university (jnu), new delhi-110067, india n. srivastava department of chemical engineering and technology, indian institute of technology (bhu), varanasi-221005 india r. singh institute of environment and sustainable development (iesd), banaras hindu university, varanasi-221005, india d. tiwary department of chemistry, indian institute of technology (bhu), varanasi-221005 india p.k. mishra department of chemical engineering and technology, indian institute of technology (bhu), varanasi-221005 india

the resource intensive human activities (such as mining and extraction of mineral oils for betterment of life and modernization of society) have increased environmental pollution several folds. products of mining and petrochemical industries are advantageous for the modern society. but waste generated such as btex from such industries are carcinogenic, toxic and causes adverse effects on enviro...

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