A general protocol to coat titania shell on carbon-based composite cores using carbon as coupling agent

Journal Article · Fri May 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.01.032· OSTI ID:21370404

Rongbo, Zheng ^[1]; Xianwei, Meng ^[1]

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1. Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)

We present herein a general protocol to coat titania shell on carbon-based composite cores via the hydrolysis of titanium tetrabutoxide in a mixed solvent with the catalysis of ammonia. As coupling agent, their carbonaceous component can adsorb counter-charged NH{sub 4}{sup +}, and then the negatively charged ident toTiO{sup -} species are adsorbed via electrostatic interaction to form TiO{sub 2} shell. Various carbon-based cores with different functional components, such as Ag/C core/shell spheres, Ag/C nanocables, as well as magnetic (C-Fe{sub 3}O{sub 4}) hollow spheres can be coated with titania shell to form corresponding core/shell composites. Their optical or magnetic property is also investigated. Finally, anatase-phase titania shell with rough surface can be generated via hydrothermal treatment of aforementioned titania coated composites, which can further introduce the properties of anatase-phase titania to the composites. - Graphical abstract: A general protocol was developed to coat titania shell on carbon-based composite cores based on the carbonaceous surface. Typically, Ag/C/TiO{sub 2} core/shell spheres were formed via this method.

• OSTI ID: 21370404
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 5; Other Information: DOI: 10.1016/j.jssc.2009.01.032; PII: S0022-4596(09)00037-1; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMMONIA
CARBON
CATALYSIS
HYDROLYSIS
INTERACTIONS
IRON OXIDES
MAGNETIC PROPERTIES
MIXED SOLVENTS
SHELLS
SPHERES
SURFACES
TITANIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
DISPERSIONS
ELEMENTS
HYDRIDES
HYDROGEN COMPOUNDS
IRON COMPOUNDS
LYSIS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SOLVENTS
SOLVOLYSIS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS