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Fabrication, characterization and photocatalytic activity of TiO2 layers prepared by inkjet printing of stabilized nanocrystalline suspensions

Paper ID Volume ID Publish Year Pages File Format Full-Text
46211 46435 2013 11 PDF Available
Title
Fabrication, characterization and photocatalytic activity of TiO2 layers prepared by inkjet printing of stabilized nanocrystalline suspensions
Abstract

Titanium dioxide (TiO2) colloidal dispersions were synthesized by hydrothermal synthesis in acidic pH under various process conditions. Phase structure of prepared TiO2 was identified as pure rutile by X-ray diffraction analysis and crystallite sizes determined by the Scherrer equation were in the range of 10–25 nm. These values correlated with particle sizes observed by transmission electron microscopy (TEM). Afterwards, the prepared TiO2 dispersions were used for the formulation of stable inkjet printable “inks”. Thin layers of nanocrystalline TiO2 were deposited by inkjet printing onto soda-lime glass substrates. After sintering at 500 °C, thin patterned films were obtained. Their basic physicochemical properties were characterized by standard methods. Optical microscopy and SEM imaging revealed highly structured topography of samples surface. Layer hardness was equivalent to the B pencil as determined by the “Pencil Hardness Test”. The topology and roughness were examined by atomic force microscopy and RMS roughness was in the range of 40–100 nm. Band gap energy of TiO2 determined by UV–vis reflection spectroscopy was consistent with known rutile values. The photocatalytic activity of printed layers was evaluated on the basis of 2,6-dichloroindophenoldiscoloration rate monitored by UV–vis spectroscopy and did not exceed the performanceof Aeroxide P-25. Despite average photocatalytic performace of this particular TiO2 type, inkjet printing proved to be an efficient method for the fabrication of patterned titania films originating from nanocrystalline precursor.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Titanium dioxide was synthesized hydrothermally under different conditions. ► Photocatalytically active pure rutile was the dominant phase. ► Low viscosity stable jettable formulations were developed. ► Thin titania layers were prepared by inkjet printing. ► Morphology and roughness of the layers depends on synthesis conditions.

Keywords
Photocatalytic activity; Hydrothermal synthesis; Inkjet printing; Colloidal dispersion
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Fabrication, characterization and photocatalytic activity of TiO2 layers prepared by inkjet printing of stabilized nanocrystalline suspensions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 138–139, 17 July 2013, Pages 84–94
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us