Photocatalytic performance of mixed lithium niobates-tantalates prepared by mechanochemical method

Mixed lithium niobates-tantalates LiNb 1−x Ta x O 3 (LN-LT) with different Nb/Ta ratio have been prepared using two-stage procedure: dry milling at 600 rpm and calcination at 700 °C. XRD data indicate formation of low crystalline intermediate products at the stage of ball-milling procedure. Milled i...

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Bibliographic Details
Published inApplied nanoscience Vol. 13; no. 11; pp. 7195 - 7202
Main Authors Sydorchuk, V., Sugak, D., Hurskyi, S., Samsonenko, M., Khalameida, S., Lakhnik, A., Vasylechko, L.
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 01.11.2023
Springer Nature B.V
Subjects
Ball milling
Catalytic activity
Chemistry and Materials Science
Energy gap
Hydrothermal treatment
Lithium niobates
Materials Science
Membrane Biology
Nanochemistry
Nanotechnology
Nanotechnology and Microengineering
Original Article
Photocatalysis
Praseodymium
Roasting
Tantalates
Tantalum
Photocatalytic activity
Safranin T
Nanopowders
Lithium niobates-tantalates
Milling
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Summary:Mixed lithium niobates-tantalates LiNb 1−x Ta x O 3 (LN-LT) with different Nb/Ta ratio have been prepared using two-stage procedure: dry milling at 600 rpm and calcination at 700 °C. XRD data indicate formation of low crystalline intermediate products at the stage of ball-milling procedure. Milled intermediates have a band gap in the range of 3.00–3.16 eV and, as a result, high photocatalytic activity in the process of safranin T degradation under visible irradiation. Hydrothermal treatment of milled intermediates slightly increases the activity due to an increase in the specific surface area. The intermediates doped with praseodymium have maximum activity since their band gap is minimum. Highly crystalline calcined niobates-tantalates have broader band gap and much lower activity.
ISSN:2190-5509
2190-5517
DOI:10.1007/s13204-023-02889-0