نتایج جستجو برای: nanocomposites chemical method

تعداد نتایج: 1971410  

Journal: :journal of nanostructures 2014
a. salabat f. mirhoseini z. masoumi m. mahdie

polymer nanocomposites containing metals have been used in a wide range of applications due to their versatility, and tunable characteristics including physical, chemical, biological and mechanical properties. in this research work polystyrene-silver nanocomposite has been produced using polymerization of a w/o microemulsion system. styrene monomer was used as the oil or continues phase of the ...

2016
M. Ates N. Uludag

Corrosion is explained as metal or alloy changes by chemical or electrochemical process or physical changes because of environmental effects. Corrosion occurs with oxidation and reduction reactions. In this study, Some general informations were given in the introduction section. And then, monomer synthesis, conducting polymers, nanocomposites, copolymers, and applications of corrosion protectio...

Journal: :Nanoscale 2014
Siqi Liu Min-Quan Yang Zi-Rong Tang Yi-Jun Xu

Branched hierarchical CdS/ZnO nanocomposites have been synthesized for application toward photocatalytic fine-chemical synthesis. Growing ZnO nanorods on the surface of CdS nanowires boosts the light harvesting efficiency and charge separation as well as fast charge transport and collection. A Z-scheme mechanism under artificial solar light is also proposed.

2009
Matthew D. Goodman Jun Xu Jun Wang Zhiqun Lin

Chemistry of Materials is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Article Semiconductor Conjugated Polymer#Quantum Dot Nanocomposites at the Air/Water Interface and Their Photovoltaic Performance Matthew D. Goodman, Jun Xu, Jun Wang, and Zhiqun Lin Chem. Mater., 2009, 21 (5), 934-938• Publication Date (Web): 26 January 2009 Downloaded from ht...

2011
K. E. Thomson D. Jiang W. Yao R. O. Ritchie

Alumina-based nanocomposites reinforced with niobium and/or carbon nanotubes (CNT) were fabricated by advanced powder processing techniques and consolidated by spark plasma sintering. Raman spectroscopy revealed that single-walled carbon nanotubes (SWCNT) begin to break down at sintering temperatures >1150 C. Nuclear magnetic resonance showed that, although thermodynamically unlikely, no Al4C3 ...

2017
Rong Guo Tifeng Jiao Ruirui Xing Yan Chen Wanchun Guo Jingxin Zhou Lexin Zhang Qiuming Peng

Gold nanoparticles (AuNPs) have attracted widespread attention for their excellent catalytic activity, as well as their unusual physical and chemical properties. The main challenges come from the agglomeration and time-consuming separation of gold nanoparticles, which have greatly baffled the development and application in liquid phase selective reduction. To solve these problems, we propose th...

Journal: :Journal of the American Chemical Society 2003
Yi Yang Yunfeng Lu Mengcheng Lu Jinman Huang Raid Haddad George Xomeritakis Nanguo Liu Anthony P Malanoski Dietmar Sturmayr Hongyou Fan Darryl Y Sasaki Roger A Assink John A Shelnutt Frank van Swol Gabriel P Lopez Alan R Burns C Jeffrey Brinker

Conjugated polymer/silica nanocomposites with hexagonal, cubic, or lamellar mesoscopic order were synthesized by self-assembly using polymerizable amphiphilic diacetylene molecules as both structure-directing agents and monomers. The self-assembly procedure is rapid and incorporates the organic monomers uniformly within a highly ordered, inorganic environment. By tailoring the size of the oligo...

2014
Salah U. Hamim Raman P. Singh

Hydrophilic nature of epoxy polymers can lead to both reversible and irreversible/permanent changes in epoxy upon moisture absorption. The permanent changes leading to the degradation of mechanical properties due to combined effect of moisture and elevated temperature on EPON 862, Nanomer I.28E, and Somasif MAE clay-epoxy nanocomposites are investigated in this study. The extent of permanent de...

2012
Minhao Wong Luyi Sun Riichi Nishimura

iron oxide, [ 10 ] zinc oxide, [ 11 ] cadmium selenide, [ 12 ] gold [ 13 ] and others in nanocomposites is a promising approach to introduce new functionalities to a polymer such as tunable refractive index, magnetism, surface hardness, UV absorption, etc. However, aggregation of nanoparticles is commonly encountered, leading to unsatisfactory performance of nanocomposites and frustrating effor...

Journal: :Molecules 2015
Tayser Sumer Gaaz Abu Bakar Sulong Majid Niaz Akhtar Abdul Amir H Kadhum Abu Bakar Mohamad Ahmed A Al-Amiery

The aim of this review was to analyze/investigate the synthesis, properties, and applications of polyvinyl alcohol-halloysite nanotubes (PVA-HNT), and their nanocomposites. Different polymers with versatile properties are attractive because of their introduction and potential uses in many fields. Synthetic polymers, such as PVA, natural polymers like alginate, starch, chitosan, or any material ...

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