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Photocatalytic properties of transparent TiO2 coatings doped with neodymium

100%

Wojcieszak D., Kaczmarek D., Domaradzki J., Mazur M., Morawski A. W., Janus M., Prociów E., Gemmellaro P.

Polish Journal of Chemical Technology

2012

vol. 14

issue 3

1-7

In this work photocatalytic properties of TiO2 thin fi lms doped with 8.51 at. % of Nd were described. The self-cleaning phenomenon of thin fi lms was discussed together with the structural, optical and surface properties of prepared thin fi lms. Transparent coatings based on titanium dioxide were manufactured by high-energy reactive magnetron sputtering process. Incorporation of Nd during sputtering process results in amorphous behavior, without a signifi cant infl uence on transparency and colour as compared to the undoped TiO2-rutile matrix. Nevertheless, doping with neodymium doubles the photocatalytic activity of the matrix due to higher quantity of photo-generated charge carriers and more effi cient mechanism of energy transfer.

Uranium and neodymium partitioning in alkali chloride melts using low-melting gallium-based alloys

86%

Melchakov S. Y., Maltsev D. S., Volkovich V. A., Yamshchikov L. F., Lisienko D. G., Osipenko A. G., Rusakov M. A.

Nukleonika

2015

vol. 60

issue 4

915-920

Partitioning of uranium and neodymium was studied in a ‘molten chloride salt - liquid Ga-X (X = In or Sn) alloy’ system. Chloride melts were based on the low-melting ternary LiCl-KCl-CsCl eutectic. Nd/U separation factors were calculated from the thermodynamic data as well as determined experimentally. Separation of uranium and neodymium was studied using reductive extraction with neodymium acting as a reducing agent. Efficient partitioning of lanthanides (Nd) and actinides (U), simulating fission products and fissile materials in irradiated nuclear fuels, was achieved in a single stage process. The experimentally observed Nd/U separation factor valued up to 106, depending on the conditions.

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

86%

Wojcieszak D., Mazur M., Kaczmarek D., Morgiel J., Poniedziałek A., Domaradzki J., Czeczot A.

Polish Journal of Chemical Technology

2015

vol. 17

issue 2

103-111

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.

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2 Polish Journal of Chemical Technology

1 Nukleonika

2 2015

1 2012

2 Domaradzki J.

2 Kaczmarek D.

2 Mazur M.

2 Wojcieszak D.

1 Czeczot A.

1 Gemmellaro P.

1 Janus M.

1 Lisienko D. G.

1 Maltsev D. S.

1 Melchakov S. Y.

1 Morawski A. W.

1 Morgiel J.

1 Osipenko A. G.

1 Poniedziałek A.

1 Prociów E.

1 Rusakov M. A.

1 Volkovich V. A.

1 Yamshchikov L. F.

Search results

Photocatalytic properties of transparent TiO2 coatings doped with neodymium

Uranium and neodymium partitioning in alkali chloride melts using low-melting gallium-based alloys

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