نتایج جستجو برای: inorganic nanoparticles

تعداد نتایج: 179608  

Journal: :Nature nanotechnology 2010
Matti M van Schooneveld Alexandre Gloter Odile Stephan Luiz F Zagonel Rolf Koole Andries Meijerink Willem J M Mulder Frank M F de Groot

The development of hybrid organic-inorganic nanoparticles is of interest for applications such as drug delivery, DNA and protein recognition, and medical diagnostics. However, the characterization of such nanoparticles remains a significant challenge due to the heterogeneous nature of these particles. Here, we report the direct visualization and quantification of the organic and inorganic compo...

Journal: :Nature nanotechnology 2011
Yunsheng Xia Trung Dac Nguyen Ming Yang Byeongdu Lee Aaron Santos Paul Podsiadlo Zhiyong Tang Sharon C Glotzer Nicholas A Kotov

Nanoparticles are known to self-assemble into larger structures through growth processes that typically occur continuously and depend on the uniformity of the individual nanoparticles. Here, we show that inorganic nanoparticles with non-uniform size distributions can spontaneously assemble into uniformly sized supraparticles with core-shell morphologies. This self-limiting growth process is gov...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

the photocatalytic coatings were prepared via incorporating the modified titania nanoparticles into epoxy-based inorganic-organic hybrid coatings. titania nanoparticles were first synthesized from tetra-n-butyl titanate using sol-gel methods by two different calcination treatments, i.e., in mild condition (80°c) and 500°c. the formed anatase nanoparticles were further modified as titania-silica...

Journal: :Journal of the American Chemical Society 2002
Jia-Yu Wang Wei Chen An-Hua Liu Guang Lu Gang Zhang Jun-Hu Zhang Bai Yang

A promising strategy for the controlled synthesis of inorganic/polymeric nanocomposites may be sustained by fabricating cross-linked PbS nanoparticles/polymer composite thin films through combining surface-initiated atom transfer radical polymerization (ATRP) and gas/solid reaction. The introduction of Pb ions through the extension of surface-initiated ATRP to the monomers containing metal ions...

2016
Catherine Louis

This review focuses on the chemical methods used to prepare supported bimetallic heterogeneous catalysts, i.e., bimetallic nanoparticles deposited on a support. The review is limited to the preparation of gold-based bimetallic catalysts and moreover to bimetallic nanoparticles supported on powder inorganic supports, i.e., on the surface or in the porosity, and not on model supports such as sing...

2004
Shozo Yanagida Yuji Wada Tetsushi Yamamoto Takao Sakata Hirotaro Mori Masaki Goto Shingo Hibino

Nan-sized inorganic particles having characteristic morphology and narrow size-distribution have attracted attention due to their potential applications as functional materials, i.e., catalysts, magnetic materials, conducting inks, and ferrofluids. Various preparation and stabilization methods of nano-sized metal particles, metal oxide particles, and metal sulfide particles have been reported. ...

Journal: :Angewandte Chemie 2009
Atul Asati Santimukul Santra Charalambos Kaittanis Sudip Nath J Manuel Perez

Inorganic enzyme? Ceria nanoparticles exhibit unique oxidase-like activity at acidic pH values. These redox catalysts can be used in immunoassays (ELISA) when modified with targeting ligands (see picture; light blue and yellow structures are nanoparticles with attached ligands). This modification allows both for binding and for detection by the catalytic oxidation of sensitive colorimetric dyes...

Journal: :Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology 2016
Yiyuan Kang Jia Liu Bin Song Xiaoli Feng Lingling Ou Limin Wei Xuan Lai Longquan Shao

Inorganic nanomaterials have been widely applied in biomedicine. However, several studies have noted that inorganic nanoparticles can enter the brain and induce cytoskeletal remodeling, as well as electrophysiological alterations, which are related to neurodevelopmental disorders and neurodegenerative diseases. The toxic effects of inorganic nanomaterials on the cytoskeleton and electrophysiolo...

Background & Aims: In recent years, iron oxide nanoparticles have been used in contrast-enhanced magnetic resonance imaging for diagnosing a wide range of diseases. In order to provide biocompatibility and prevent the toxicity of the nanoparticles, using organic or inorganic coating around these nanoparticles is important for their application. The aim of this study is to investigate the effect...

Hossein Sarpoolaky M Saeidi S. M. Mirkazemi

Recently, the Al2O3–TiO2–ZrO2 system has found valuable applications, particularly, as a support for NOx storage–reduction (NSR) catalysts. Nanocomposite powders were prepared from the co-precipitation method in inorganic precursors. The behaviors of mixed oxide nanoparticles under ultrasonic irradiation, such as dispersion, and crushing were studied. Phase transformations, crystallite size, an...

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