نتایج جستجو برای: Organo-silane

تعداد نتایج: 4451  

Journal: :Journal of the American Chemical Society 2005
Hongyou Fan Zhu Chen C Jeffrey Brinker Jacalyn Clawson Todd Alam

We report a general method to synthesize gold nanocrystal micelles with organo-silane headgroups. The method involves encapsulation of monodisperse, hydrophobic gold nanocrystals within the core of a micelle of an amphiphilic silane precursor. Formation and stability of monodisperse gold NC micelles have been confirmed using UV-visible spectroscopy and transmission electron microscopy. Self-ass...

2016
Silvia Villa Paola Riani Federico Locardi Fabio Canepa

In this paper the results concerning the synthesis of magnetite (Fe₃O₄) nanoparticles (NPs), their functionalization using silane derivatives, such as (3-Aminopropyl)triethoxysilane (APTES) and (3-mercaptopropyl)trimethoxysilane (MPTMS), and their exhaustive morphological and physical characterization by field emission scanning electron microscopy (FE-SEM) with energy dispersion X-ray spectrome...

Journal: :Applied sciences 2021

Nanoscale organofunctional silanes have been developed, tested and successfully applied to protect stone buildings in Europe against climatic effects since the 1860s. The same nanotechnologies can also be used pavement engineering create strong chemical bonds between a stabilising agent granular material. attachment of silane material changes surface become hydrophobic, thereby considerably red...

2014
L. Peña K. L. Hohn J. Li X. S. Sun D. Wang

Functionalization of silica surfaces using organo-silanes is highly sensitive to reaction conditions. Silica-coated nanoparticles were functionalized with propyl-sulfonic acid groups (PS) under different synthesis conditions including, various solvents (Ethanol, methanol, acetonitrile, and toluene), water content in the reaction media (0% to 50%), 3-mercaptopropyl-trimethoxysilane concentration...

Nitrate-containing compounds are considered as groundwater contaminants, the concentration of whichhas been growing in these resources during recent years. As a result, it seems necessary to use effectivemethods to remove nitrate from water and wastewater. Adsorption is generally considered moreeconomical in water treatment compared to other feasible a...

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

Abstract Mg alloys are considered a promising alternative to use as biodegradable implants. However, the main limitations of these high susceptibility hydrogen evolution and corrosion. Consequently, it is necessary control corrosion rate through surface treatment techniques. In this regard, double layer system, based on first deposition MgO coating subsequent an organo-silane sol-gel (anodized/...

Journal: :Chemical reviews 2006
Herbert W Roesky Sanjay Singh K K M Yusuff John A Maguire Narayan S Hosmane

3. Introduction 3815 4. Group 3 Organo-hydroxides 3816 5. Group 4 Organo-hydroxides 3821 5.1. Titanium 3822 5.2. Zirconium 3823 5.3. Hafnium 3824 6. Group 5 Organo-hydroxides 3825 6.1. Vanadium 3825 6.2. Niobium 3825 6.3. Tantalum 3826 7. Group 6 Organo-hydroxides 3826 7.1. Chromium 3826 7.2. Molybdenum 3826 7.3. Tungsten 3829 8. Group 7 Organo-hydroxides 3830 8.1. Manganese 3830 8.2. Techneciu...

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