نتایج جستجو برای: combustion irradiation technique sol

تعداد نتایج: 715320  

2010
John McAuley Lucy Hederman

Ethnomethodology is an established method of research in technology related fields. In work settings, ethnomethodology has helped researchers to deepen their understanding of how collaborative activities unfold in a social context. While much collaboration is now carried out online, through distributed teams for example, ethnomethodology, as a method of analysis, has not received considerable i...

In this paper, a series of BaLa­xGdxFe12-2xO19 (x=0.2, 0.4, 0.6 and 0.8)/PANI (polyaniline) nanocomposites synthesized for investigating the photocatalytic properties. Barium hexaferrite doped with La3+ and Gd3+ prepared via a sol-gel auto-combustion method and then the binary nanocomposites fabricated by the in situ polymerizati...

Journal: :iranian journal of catalysis 2015
ali ramazani fariba sadri abdolhossain massoudi mehdi khoobi sang woo joo

zinc ferrite (znfe2o4) nanoparticles were synthesized via the auto-combustion assisted sol-gel method of zn2+ and fe3+ ions (molar ratio 1:2) in ammonia solution. the prepared nanomagnetic catalyst was characterized by ir, xrd, sem and icp. the diameter of the znfe2o4 mnps (63.7 nm) was determined by debye-scherre equation via their xrd pattern. nanomagnetic znfe2o4 efficiently catalyzes oxidat...

Journal: interface and thin films 2018

In this study, in order to achieve effective coating of the homogeneous titanium dioxide (TiO2) thin film, UV irradiation pre-treatment was carried out to activate PC surfaces before coating. Sol-gel-based nanocrystalline TiO2 thin films were prepared by employing tetrabutyl-titanate as a precursor. Nanocrystalline TiO2 thin films were deposited by sol-gel spin coating on the treated substrates...

2005
D. L. GRISCOM C. S. ASHLEY

ESR studies were carried out on “O-enriched sol-gel silicas subjected to lOO-keV X irradiation at 77°K. Separate samples were given pre-irradiation heat treatments at 250, 600. and 800°C. A strong induced resonance-due to ethyl alcohol radicals was found to decrease in intensity with increasing anneal temperature. Methyl radicals were also detected. The spectrum of the nonbridging-oxygen hole c...

Journal: :Journal of controlled release : official journal of the Controlled Release Society 2017
Cheng Wang Guoying Zhang Guhuan Liu Jinming Hu Shiyong Liu

Hydrogels have found promising applications in drug delivery due to their biocompatibility, high drug loading capability, and tunable release profiles. However, hydrogel-based carriers are primarily employed for delivering hydrophilic payloads while hydrophobic drugs cannot be efficiently delivered due to the lack of hydrophobic domains within conventional hydrogel matrices. Herein, we report t...

L. Abdollahi M. A. Rezvani, M. Ali Nia Asli M. Oveisi

Mixed-addenda vanadium substituted polyoxometalate supported on anatase TiO2 crushed nano leaf was synthesized by an unusual reaction with titanium tetraisopropoxide at 100 ºC via sol–gel method under oil-bath condition. The materials characterized by XRD, TEM,  IR and UV–vis  techniques.  In  the  present  work,  efficient  oxidative  of  thiols  with  polyoxometalate-TiO2/hydrogen  peroxide  ...

Journal: :Molecules 2017
Min Wei Xue-Lei Peng Qi-Sheng Liu Fang Li Ming-Ming Yao

In order to effectively photodegradate organic pollutants, ZnO composite and Co-B codoped TiO₂ films were successfully deposited on glass substrates via a modified sol-gel method and a controllable dip-coating technique. Combining with UV-Vis diffuse reflectance spectroscopy (DRS) and photoluminescence spectra (PL) analyses, the multi-modification could not only extend the optical response of T...

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