نتایج جستجو برای: core shell sio2 fe3o4gold

تعداد نتایج: 268406  

2016
Yuru Ge Yushu Li Baiyi Zu Chaoyu Zhou Xincun Dou

Complex multiphase waste system purification, as one of the major challenges in many industrial fields, urgently needs an efficient one-step purification method to remove several pollutants simultaneously and efficiently. Multi-functionalized magnetic nanoparticles, Fe3O4@SiO2-MPS-AM-DMC-AMPS, were facilely prepared via a one-pot in situ polymerization of three different functional monomers, AM...

Journal: :ACS applied materials & interfaces 2013
Weixing Sun Wuzhu Sun Michael R Kessler Nicola Bowler Kevin W Dennis R William McCallum Qi Li Xiaoli Tan

SiO2 coated Fe3O4 submicrometer spherical particles (a conducting core/insulating shell configuration) are fabricated using a hydrothermal method and are loaded at 10 and 20 vol % into a bisphenol E cyanate ester matrix for synthesis of multifunctional composites. The dielectric constant of the resulting composites is found to be enhanced over a wide frequency and temperature range while the lo...

Journal: :ACS applied materials & interfaces 2014
Tangi Aubert Stefaan J Soenen Daniel Wassmuth Marco Cirillo Rik Van Deun Kevin Braeckmans Zeger Hens

We report on the synthesis of luminescent CdSe/CdS@SiO2 nanoparticles and their application to cell labeling. The main novelty of these nanoparticles is the use of newly developed "flash" CdSe/CdS quantum dots (QDs), which are obtained through a new fast and efficient synthesis method recently reported. These core-shell QDs are encapsulated in silica nanoparticles through a water-in-oil microem...

Journal: :Dalton transactions 2014
Peng Zhao Yihua Zhu Xiaoling Yang Jianhua Shen Xin Jiang Jie Zong Chunzhong Li

We report on a novel drug carrier which is based on the combination of magnetic and upconversion (UC) emission of Fe3O4@SiO2/NaYF4:Yb, Er (MSU) hybrids modified with MnO2 nanosheets (MSU/MnO2). The MSU hybrids were fabricated by covalently linking amino-modified Fe3O4@SiO2 particles with carboxyl-functionalized NaYF4:Yb, Er particles. The Fe3O4 core and the NaYF4:Yb, Er shell functioned success...

Journal: :Soft matter 2016
Xiaosong Guo Yulu Chen Dong Li Guicun Li Meng Xin Mei Zhao Chen Yang Chuncheng Hao Qingquan Lei

Monodisperse SiO2/TiO2 yolk-shell nanospheres (YSNSs) with different SiO2 core sizes were fabricated and adopted as dispersing materials for electrorheological (ER) fluids to investigate the influence of the gradual structural change of disperse particles on ER properties. The results showed that the ER performance of the YSNS-based ER fluid prominently enhanced with the decrease of SiO2 core s...

Journal: :Catalysts 2023

A nitrogen-doped TiO2@SiO2 core/shell nano-photocatalyst (N-TiO2@SiO2) was used as an additive in photocatalytic paint and applied for the degradation of gaseous acetaldehyde under light-emitting diode (LED) visible light irradiation. N-TiO2 synthesised via solvothermal method then encapsulated by SiO2 sol-gel method. The incorporation N atom into TiO2 structure observed X-ray photoelectron spe...

Journal: :Catalysts 2021

Bearing in mind the need to develop optimal transition metal oxide-based catalysts for combustion of volatile organic compounds (VOCs), yolk-shell materials were proposed. The constructed composites contained catalytically active Co3O4 nanoparticles, protected against aggregation and highly dispersed a shell made porous SiO2, forming specific type nanoreactor. bottom-up synthesis started with o...

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