نتایج جستجو برای: aqueous sol gel

تعداد نتایج: 191671  

2005
Alain Walcarius Daniel Mandler James A. Cox Maryanne Collinson Ovadia Lev

The implications of organically-modified silica-based materials in electrochemical science is reviewed along with some selected recent trends in the field of functionalized and sol–gel silica electrochemistry. These recent trends include the electro-assisted generation of organosilica films on solid electrode surfaces, the preparation and applications of sol–gel derived composite (carbon, gold,...

2004
X. Zhang H. Lu

We report on the fabrication and characterization of thick UV-patternable hybrid sol-gel films by spin coating using a modified sol-gel process. Thick coating of 25 microns with crack-free surface can be produced by one spin coating step. Thick layers of more than 100 μm can be obtained with a multi-coating process. Characterization using different techniques including optical microscope and at...

Journal: :Revista Mexicana De Fisica 2023

Polvos cerámicos de Sm2O3 dopados y mezclados con europio se obtuvieron a partir la formación cloruros samario través ruta sol-gel citrato. Este trabajo reporta influencia los iones en las propiedades estructurales luminiscentes cerámicas Sm2O3:Eu3+ (coordenadas CIE) variando el Eu3+ 10 50% mol. Las características químicas, morfológicas fueron establecidas por FTIR XRD, revelando presencia ban...

Journal: :Journal of Sol-Gel Science and Technology 2022

Abstract Knowledge about the nucleation, growth, and formation mechanisms during materials synthesis using sol-gel solution-based methods is important to design a material with desired properties. We used aqueous chemical as an environmentally friendly highly flexible route tailored reproducible of oxide nanomaterials thin films. For studies hydrothermal in situ cell synchrotron X-ray diffracti...

Journal: :journal of physical & theoretical chemistry 2009
k. zare m. s. sadjadi m. enhessari s. khanahmadzadeh

high purity lead titanate nanopowders in tetragonal form have been successfully prepared bycitric acid gel method using lead nitrate and tetra-n-butyl titanate as pb and ti sourcesrespectively and citric acid as complexing reagent. the precursors were calcined at varioustemperatures ranging from 450 °c to 600 °c for 2 h. fourier transform infraredspectroscopy (ft-ir), x-ray diffraction (xrd) an...

2016
Kenneth G Furton

Simultaneous extraction of the morpholino dithiocarbamate (MDTC) chelates of Cr(III) and Cr(VI) ion from aqueous samples was accomplished by applying fabric phase sorptive extraction (FPSE) using a cellulose fabric modified with a sol-gel/polytetrahydrofuran composite. Following extraction, the chelates were separated by HPLC on a reverse phase C18 column with acetonitrile:water (65:35; v/v) as...

2013
Christophe Massard Muriel Bonnet Philippe Veisseire Yves Sibaud Eric Caudron Komla Oscar Awitor

In this work, the photokilling of Escherichia coli using a “one-pot” synthesized suspension of anatase crystallized nanoparticles is evaluated. Preliminary to the biological tests concerning the antibacterial efficiency, the fabricated suspension, using a derived sol-gel process in soft chemistry condition, is characterized. Structural properties of the nanoparticles are investigated using Elec...

Journal: :Journal of hazardous materials 2013
Qing Yuan Nan Li Yue Chi Wangchang Geng Wenfu Yan Ying Zhao Xiaotian Li Bin Dong

Pore size of mesoporous materials is crucial for their surface grafting. This article develops a novel multifunctional microsphere with a large pore size mesoporous silica shell (ca. 10.3 nm) and a magnetic core (Fe₃O₄), which is fabricated using cetyltrimethylammonium bromide (CTAB) as pore-forming agents, tetraethyl orthosilicate (TEOS) as silicon source through a sol-gel process. Compared wi...

2015
Sungjun Park SeYeong Lee Chang-Hyun Kim Ilseop Lee Won-June Lee Sohee Kim Byung-Geun Lee Jae-Hyung Jang Myung-Han Yoon

Recently, growing interest in implantable bionics and biochemical sensors spurred the research for developing non-conventional electronics with excellent device characteristics at low operation voltages and prolonged device stability under physiological conditions. Herein, we report high-performance aqueous electrolyte-gated thin-film transistors using a sol-gel amorphous metal oxide semiconduc...

Journal: :Transactions of the Materials Research Society of Japan 2009

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