Fabrication of macro–mesoporous titania/alumina core–shell materials in oil/water interface

Liu, Erming, Vezzoli, Massimiliano, Locke, Ashley J., Frost, Ray L., & Martens, Wayde N. (2014) Fabrication of macro–mesoporous titania/alumina core–shell materials in oil/water interface. Journal of Colloid and Interface Science, 436, pp. 194-203.

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Abstract

A series of macro–mesoporous TiO2/Al2O3 nanocomposites with different morphologies were synthesized. The materials were calcined at 723 K and were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Transmission electron microscope (TEM), N2 adsorption/desorption, Infrared Emission Spectroscopy (IES), X-ray photoelectron spectroscopy (XPS) and UV–visible spectroscopy (UV–visible). A modified approach was proposed for the synthesis of 1D (fibrous) nanocomposite with higher Ti/Al molar ratio (2:1) at lower temperature (<100 °C), which makes it possible to synthesize such materials on industrial scale. The performance–morphology relationship of as-synthesized TiO2/Al2O3 nanocomposites was investigated by the photocatalytic degradation of a model organic pollutant under UV irradiation. The samples with 1D (fibrous) morphology exhibited superior catalytic performance than the samples without, such as titania microspheres.

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ID Code: 83659
Item Type: Journal Article
Refereed: Yes
Keywords: Photocatalyst, Fibrous catalyst, Core-shell nanocomposite, Hierarchical nanostructure, Oil/water interface
DOI: 10.1016/j.jcis.2014.08.063
ISSN: 0021-9797
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Copyright Owner: Copyright 2014 Elsevier Inc.
Deposited On: 17 Apr 2015 01:56
Last Modified: 24 Aug 2016 00:11

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