Influence of the structural and surface properties on photocatalytic activity of TiO2:Nd thin films

• Authors: Damian Wojcieszak , Michał Mazur , Danuta Kaczmarek , Jerzy Morgiel , Agata Poniedziałek , Jarosław Domaradzki , Aleksandra Czeczot
• Languages of publication: EN

Abstracts

EN

Titanium dioxide thin films doped with the same amount of neodymium were prepared using two different magnetron sputtering methods. Thin films of anatase structure were deposited with the aid of Low Pressure Hot Target Magnetron Sputtering, while rutile coatings were manufactured using High Energy Reactive Magnetron Sputtering process. The thin films composition was determined by energy dispersive spectroscopy and the amount of the dopant was equal to 1 at. %. Structural properties were evaluated using transmission electron microscopy and revealed that anatase films had fibrous structure, while rutile had densely packed columnar structure. Atomic force microscopy investigations showed that the surface of both films was homogenous and consisted of nanocrystalline grains. Photocatalytic activity was assessed based on the phenol decomposition. Results showed that both thin films were photocatalytically active, however coating with anatase phase decomposed higher amount of phenol. The transparency of both thin films was high and equal to ca. 80% in the visible wavelength range. The photoluminescence intensity was much higher in case of the coating with rutile structure.

Keywords

EN

TiO2; neodymium; thin films; magnetron sputtering; photocatalysis; phenol decomposition

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2015
• Volume: 17
• Issue: 2
• Pages: 103-111

Dates

published

1 - 6 - 2015

online

9 - 6 - 2015

Contributors

author

Damian Wojcieszak

• Wroclaw University of Technology, Faculty of Microsystem Electronics and Photonics, Janiszewskiego 11/17, 50-372 Wroclaw, Poland

author

Michał Mazur

• Wroclaw University of Technology, Faculty of Microsystem Electronics and Photonics, Janiszewskiego 11/17, 50-372 Wroclaw, Poland

author

Danuta Kaczmarek

• Wroclaw University of Technology, Faculty of Microsystem Electronics and Photonics, Janiszewskiego 11/17, 50-372 Wroclaw, Poland

author

Jerzy Morgiel

• Polish Academy of Sciences, Institute of Metallurgy and Materials Science, Reymonta 25, 30-059 Cracov, Poland

author

Agata Poniedziałek

• Wroclaw University of Technology, Faculty of Microsystem Electronics and Photonics, Janiszewskiego 11/17, 50-372 Wroclaw, Poland

author

Jarosław Domaradzki

• Wroclaw University of Technology, Faculty of Microsystem Electronics and Photonics, Janiszewskiego 11/17, 50-372 Wroclaw, Poland

author

Aleksandra Czeczot

• Wroclaw University of Technology, Faculty of Microsystem Electronics and Photonics, Janiszewskiego 11/17, 50-372 Wroclaw, Poland

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Identifiers

DOI

10.1515/pjct-2015-0037