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Functionalization of BaTiO3 nanoparticles with electron insulating and conducting organophosphazene-based hybrid materials
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Pappas, George S., Wan, Chaoying, Bowen, Chris, Haddleton, David M. and Huang, Xiaobin (2017) Functionalization of BaTiO3 nanoparticles with electron insulating and conducting organophosphazene-based hybrid materials. RSC Advances , 7 (32). pp. 19674-19683. doi:10.1039/C7RA02186K ISSN 2046-2069.
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Official URL: http://dx.doi.org/10.1039/C7RA02186K
Abstract
Novel core–shell structured organophosphazene (OPZ) coated BaTiO3 nanoparticles (OPZ@BaTiO3) were produced via a facile and rapid one-step nucleophilic substitution reaction in ambient conditions. The morphology, structure and textural properties of the core–shell nanoparticles were analysed via electron microscopy, spectroscopy, thermogravimetry and porosimetry, and the dielectric properties were evaluated by impedance spectroscopy. The thickness of the cross-linked OPZ shell was readily tailored by varying the weight ratio of the OPZ monomers to BaTiO3, which in turn affected the relative permittivity and the frequency dependence of the OPZ/BaTiO3 particles. A subsequent carbonisation treatment of the OPZ@BaTiO3 at 700 °C transformed the polymeric OPZ shell to a microporous carbonaceous shell, which dramatically increased the electrical conductivity of the particles. Organophosphazene chemistry offers a facile route to functionalise BaTiO3 nanoparticles without any pre-treatment, and generate a range of core–shell BaTiO3 nanoparticles with tailored dielectric and electrically conductive properties that can be used as active fillers for polymer based nanocomposites and energy storage applications. The effectiveness and advantages of OPZ chemistry over other reported methods in forming core–shell particles are demonstrated.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||
Library of Congress Subject Headings (LCSH): | Barium compounds, Titanates, Polymers | ||||||||
Journal or Publication Title: | RSC Advances | ||||||||
Publisher: | Royal Society of Chemistry | ||||||||
ISSN: | 2046-2069 | ||||||||
Official Date: | 3 April 2017 | ||||||||
Dates: |
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Volume: | 7 | ||||||||
Number: | 32 | ||||||||
Page Range: | pp. 19674-19683 | ||||||||
DOI: | 10.1039/C7RA02186K | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 5 April 2017 | ||||||||
Date of first compliant Open Access: | 10 April 2017 | ||||||||
Funder: | Warwick Manufacturing Group, Engineering and Physical Sciences Research Council (EPSRC), Seventh Framework Programme (European Commission) (FP7), European Research Council (ERC) | ||||||||
Grant number: | FP/2007-2013 (FP7), 320963 (ERC) |
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