High-performance coating could be used to protect steels in engineering. The GPTMS-TEOS hybrid coatings were successfully prepared using (3-glycidoxypropyl) trimethoxysilane (GPTMS) and tetraethylorthosilicate (TEOS) as reaction raw materials diethylenetriamine (DETA) both a curing agent catalyst at room temperature. contained amorphous SiO2 was characterized by means of X-ray diffraction (XRD)...

Sol-gel synthesis of silica employing the co-precursor trimethylchlorosilane (TMCS) and precursor tetraethylorthosilicate (TEOS) was accomplished. The purpose this investigation to ascertain how pH affected properties synthetic silica. synthesized hydrophobic characterized using FTIR, TGA, GSA determine effect adjustment on functional group characters, thermal properties, pore morphology. ratio...

In this work, a magnetic Fe3O4@SiO2@mesoporous-SiO2 (F@S@m-S) material was successfully prepared by three-step method: firstly, Fe3O4 particles were synthesized through hydro-thermal synthesis process; secondly, Fe3O4@SiO2 materials fabricated via template method using tetraethyl orthosilicate (TEOS) as silicon sources and cetyltrimethylammonium chloride (CTAC) templates; lastly, F@S@m-S well. ...

Polyethylene (PE) and silica are perhaps the simplest and most common organic and inorganic polymers, respectively. We describe, for the first time, a physically interpenetrating nanocomposite between these two elementary polymers. While polymer-silica composites are well known, the nanometric physical blending of PE and silica has remained a challenge. A method for the preparation of such mate...

Methylated microporous silica with high thermal stability and tuneable hydrophobicity was obtained by acid-catalysed sol–gel hydrolysis and condensation of mixtures of tetraethylorthosilicate (TEOS) and methyltriethoxysilane (MTES). The gels exhibited a trend towards smaller ultramicropores with increasing methyl content, while in addition some supermicropores were formed with sizes of around 2...

The effects of gate dielectrics material in organic thin film transistors (OTFTs) were investigated. The gate dielectrics were deposited by plasma enhanced chemical vapor deposition (PECVD) with cyclohexane and tetraethylorthosilane (TEOS) respectively used as organic and inorganic precursors. The gate dielectrics (gate insulators) were deposited as either organic plasma-polymer or organic–inor...

Oil–water separation using special wettability materials has received much attention due to its low energy consumption and high efficiency. Herein, a fluorine-free superhydrophobic cotton fabric (PDMS/STA-coated fabric) was successfully prepared by simple impregnation method hydroxyl-capped polydimethylsiloxane (PDMS-OH), tetraethoxysilane (TEOS), stearic acid (STA) as precursors. The investiga...

Arvioitu teos:
 Sirkku Lesonen: Valuing variability. Dynamic usage-based principles in the L2 development of four Finnish language learners. Groningen Dissertations Linguistics 184. Groningen: Rijksuniversiteit 2020. 310 s. isbn 9789403426747. Saatavilla verkossa osoitteessa http://urn.fi/URN:ISBN:978-94-034-2675-4.

In-situ synthesis of Ti-incorporated MCM-41 nano catalyst was carried out by the hydrothermal method to prepare a mesoporous catalyst for the oxidative desulfurization reaction (ODS). Oxidative reaction of dibenzothiophene (DBT) as a heavy sulfur compound was evaluated in a solution of n-decane as a model of liquid fuel. The synthesized catalysts were characterized by XRD, FESEM, EDX, TEM, FTIR...