نتایج جستجو برای: nano tio2

تعداد نتایج: 71760  

2015
S. Mahdavi S. R. Allahkaram

Electrodeposition is a simple and economic technique for precision coating of different shaped substrates with pure metal, alloy or composite films. Dc electrodeposition was used to produce Cr, Co-Cr and Co-Cr/TiO2 nano-composite coatings from Cr(III) based electrolytes onto 316L SS substrates. The effects of TiO2 nanoparticles concentration on co-deposition of these particles along with Cr con...

Journal: :international journal of nano dimension 0
a. mirzaee m.sc. student, department of chemistry, ahar branch, islamic azad university, ahar, iran. p. gharbani 2department of chemistry, ahar branch, islamic azad university, ahar, iran.

the present work is focused on the degradation of 4-chloro-2-nitrophenol in aqueous solution containing nano titanium dioxide, hydrogen peroxide and the combination of nano-tio2/h2o2. the effect of experimental parameters, such as the amount of nano- tio2 concentration of h2o2, initial concentration of 4-chloro-2-nitrophenol and ph on the reaction was investigated. experimental data obtained un...

زارع, محمد, ندافی, کاظم,

Background and Aim: Specific and unique characteristics of nanoparticles may entail specific and unique hazards. In addition, they may also exhibit toxicity under certain conditions. This study was conducted to investigate the toxicity of phenol-exposed and phenol-unexposed nano-TiO2 and nano-Fe/TiO2 particles. Materials and Methods: Stock solutions of the afore-mentioned nanoparticles were pr...

2018
Yanan Meng Jianlin Sun Ping Wu Chang Dong Xudong Yan

In this paper, nano-TiO2lubricating fluid was chosen as an advanced rolling lubricant to investigate its effect on the hot rolled surface and metallographic structure of SS41 steel strips. The tribological performances of nano-TiO2 lubricating fluid were measured by a four-ball tribotester. The hot rolling experiments under different lubrication conditions were carried out by a four-high rollin...

2016
Zhi-Zheng Yang Hui-Yuan Wang Lun Lu Cheng Wang Xiao-Bin Zhong Jin-Guo Wang Qi-Chuan Jiang

Hierarchical TiO2 micron spheres assembled by nano-plates were prepared through a facile hydrothermal route. Chemical tuning of the TiO2 through hydrogen reduction (H-TiO2) is shown to increase oxygen-vacancy density and thereby modifies the electronic properties. H-TiO2 spheres with a polar surface serve as the surface-bound intermediates for strong polysulfides binding. Under the restricting ...

Trypsin (E.C.3.4.21.4) is a serine protease commonly used in proteomics for digestion of proteins. In the present study, the effect of nano-TiO2 on the conformation and catalytic activity of trypsin were studied. The thermal denaturation of trypsin has been investigated in the presence and absence of nano-TiO2 over the temperature range (293-373 K) at pH 3.0 and 7.25, using temperature scanning...

Journal: :journal of dental research, dental clinics, dental prospects 0
farzin heravi dental research center, school of d mohammad ramezani pharmaceutical and biotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran maryam poosti assistant professor, department of orthodontics, school of dentistry, islamic azad university, tehran, iran mohsen hosseini achool of dentistry, mashhad university of medical sciences, mashhad, iran arezoo shajiei farzaneh ahrari dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran

background and aims. incorporation of nano-particles to orthodontic bonding systems has been considered to prevent enamel demineralization around appliances. this study investigated cytotoxicity of transbond xt adhesive containing 1 wt% titanium dioxide (tio2) nano-particles. materials and methods. ten composite disks were prepared from each of the conventional and tio2-containg composites and ...

2012
Reinout Meijboom

Nano-MgO was successfully deposited on titania using deposition-precipitation method. The catalyst produced was characterised using FTIR, XRD, BET and XRF and its activity was tested on the transesterification reaction of soybean oil to biodiesel. The catalyst activity improved when the reaction temperature was increasedfrom 150 and 225 C. It was also observed that increasing the reaction time ...

2009
Haixia Li Hua Deng Jing Zhao

Nano-TiO2 sol and finishing agent was prepared by sol-gel method, during which tetrabutyl titanate was used as precursor and ethanol was used as solvent. The agent was penetrated into polyester fabric through a padding method, the anti-ultraviolet performance of the fabric was analyzed and the external morphology was carefully studied afterward. The results showed that indicated that the Nano-T...

Journal: :journal of chemical health risks 0
homa mahmoodzadeh reyhane aghili

the present study was aimed to investigate the effects of titanium dioxide nanoparticles (nano-tio 2 ) on wheat ( triticumaestivum l.) plants cv. parsi. the experimental treatments included seven concentrations of nano- tio 2 (10, 100, 1000, 1200, 1500 and 1700 ppm nano-tio 2 and control (without any tio 2 ). the results showed that among the wheat germination indices, germination rate and weig...

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