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Issue 15, 2017
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Non-fluorinated synthesis of anatase TiO2 with dominant {001} facets: influence of faceted structures on formaldehyde sensitivity

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Abstract

Titanium dioxide (TiO2), the most widely investigated metal oxide due to its extraordinary surface, electronic and catalytic properties, is better manifested with exposed {001} facets. This article delineates the room temperature synthesis of TiO2 with 90% exposed {001} facets without using any fluorine containing precursor or hazardous material. Cetyltrimethylammonium bromide (CTAB) is explored as a capping agent to suppress the growth of the thermodynamically stable (101) plane. The {001} faceted nanosheets are decorated with gold nanoparticles of mean diameter 10 nm. The materials are characterized using XRD, TEM, XPS, as well as UV-vis, Raman and photoluminescence spectroscopy. The surface reactivities of different facets of TiO2 are substantiated in the light of formaldehyde (HCHO) oxidation. The synergistic effect between the reactive {001} facet of TiO2 and gold nanoparticles towards the photocatalysis of HCHO is also investigated and corroborated using mass spectroscopy.

Graphical abstract: Non-fluorinated synthesis of anatase TiO2 with dominant {001} facets: influence of faceted structures on formaldehyde sensitivity

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Publication details

The article was received on 23 Feb 2017, accepted on 22 Jun 2017 and first published on 22 Jun 2017


Article type: Paper
DOI: 10.1039/C7NJ00648A
Citation: New J. Chem., 2017,41, 7591-7597
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    Non-fluorinated synthesis of anatase TiO2 with dominant {001} facets: influence of faceted structures on formaldehyde sensitivity

    D. Majumder and S. Roy, New J. Chem., 2017, 41, 7591
    DOI: 10.1039/C7NJ00648A

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