نتایج جستجو برای: silica nanocomposite magnetite

تعداد نتایج: 55104  

Journal: :Nanoscale research letters 2016
Oksana V Makarchuk Tetiana A Dontsova Ihor M Astrelin

Magnetic composite sorbents based on saponite clays with different content of magnetite (2-7 wt%.) were synthesized. The samples were analyzed by X-ray diffraction methods, and it was found that the Fe3O4 in composites is in the nanorange. It has been shown that the magnetic nanocomposites have more developed microporosity and mesoporosity compared to saponite clay. The sorption properties of m...

Journal: :Journal of composites science 2021

Oil-in-water (O/W) emulsion has been a major concern for the petroleum industry. A cost-effective magnetite-reduced graphene oxide (MRGO) nanocomposite was synthesized to study demulsification process of using said under solar illumination. Characterization data show that magnetite successfully deposited on reduced through redox reaction at varying loading amounts magnetite. Demulsification O/W...

2016
Daria Jóźwiak-Niedźwiedzka Michał A. Glinicki Karolina Gibas

In the present study, the potential for the alkali–silica reaction (ASR) in radiation shielding concrete containing special aggregates is presented. The tests were performed on two kinds of aggregate: (1) high-density aggregate to absorb the gamma radiation (barite, magnetite, and hematite) and (2) mineral with high bound water content to attenuate the neutron flux (serpentinite). The optical m...

2013
Mostafa Yazdimamaghani Tannaz Pourvala Elaheh Motamedi Babak Fathi Daryoosh Vashaee Lobat Tayebi

Nanocomposites of encapsulated silica nanoparticles were prepared by in situ emulsion polymerization of acrylate monomers. The synthesized material showed good uniformity and dispersion of the inorganic components in the base polymer, which enhances the properties of the nanocomposite material. A nonionic surfactant with lower critical solution temperature (LCST) was used to encapsulate the sil...

2012
Ahmed Thabet Youssef A. Mobarak

The base polymer properties have been developed experimentally by adding small amounts of different fillers but they are expensive to the polymer material. Thus, it has been investigated that the incorporation of cost-less nanoparticles like clay and fumed silica nanoparticles into low density polyethylene LDPE and high density polyethylene HDPE which controlled the breakdown strength and volta...

Journal: :Chemical communications 2015
Xi-Jie Lin Ai-Zhi Zhong Yong-Bin Sun Xing Zhang Wei-Guo Song Rong-Wen Lu An-Min Cao Li-Jun Wan

Pd nanoparticles were successfully introduced into the channels of mesoporous silica MCM-41 with their dispersion well-tuned. We identified the dual role played by CTAB, which was critical for both the micelle template and Pd grafting, leading to the formation of a highly active Pd-MCM-41 nanocomposite for catalysing the Suzuki reaction.

ژورنال: سلامت و محیط زیست 2020

Background and Objective: Noise pollution is one of the serious environmental issue. Sound control technologies based on sound absorption and sound insulation are considered as the two widely used methods. Therefore, the aim of this study was to modify silica aerogel nanocomposites to improve its acoustic properties. Materials and Methods:  This applied experimental research involved in examin...

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