Персона: Дудкина, Татьяна Дмитриевна
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Microwave-Assisted Hydrothermal Synthesis of Bi 6 (NO 3 ) 2 O 7 (OH) 2 and Its Photocatalytic Properties
2019, Egorysheva, A. V., Gaitko, O. M., Golodukhina, S. V., Khoroshilov, A. V., Dudkina, T. D., Дудкина, Татьяна Дмитриевна
© 2019, Pleiades Publishing, Ltd. Anhydrous basic bismuth nitrate Bi 6 (NO 3 ) 2 O 7 (OH) 2 was shown to be produced by reacting bismuth nitrate with aqueous ammonia under microwave-assisted hydrothermal treatment as a result of hydrolysis. The composition of the basic nitrate was verified by titration, CHNS analyses, DTG, and IR spectroscopy. Photocatalytic tests showed that Bi 6 (NO 3 ) 2 O 7 (OH) 2 has a photocatalytic activity, but its properties are interior to those of α-Bi 2 O 3 .
Synthesis and Luminescent Properties of Nanocrystalline (1 – х)ZrO2–хEr2O3 (х = 0.015–0.5) Solid Solutions
2020, Veselova, V. O., Yurlov, I. A., Ryabochkina, P. A., Belova, O. V., Dudkina, T. D., Дудкина, Татьяна Дмитриевна
© 2020, Pleiades Publishing, Ltd.Abstract: Efficient method for the directed synthesis of ZrO2–Er2O3 luminescent material in nanocrystalline state has been developed. Monodisperse samples of cubic modification with particle size from 5 to 71 nm depending on synthesis conditions have been synthesized. Luminescence spectra due to 4I11/2 → 4I15/2 and 4I13/2 → 4I15/2 transitions of Er3+ ions have been registered upon their excitation by 532-nm radiation. Upconversion luminescence spectra due to 2H11/2, 4S3/2 → 4I15/2, 4F9/2 → 4I15/2 transitions have been registered on excitation to level 4I13/2 of Er3+ ions by 1550-nm radiation.