TY - JOUR

T1 - Hydrothermal Synthesis and Photocatalytic Activity of Layered Perovskite-Like Titanate K2La2Ti3O10 Ultrafine Nanoplatelets

AU - Minich, Iana A.

AU - Kurnosenko, Sergei A.

AU - Silyukov, Oleg I.

AU - Rodionov, Ivan A.

AU - Kalganov, Vladimir D.

AU - Zvereva, Irina A.

PY - 2023/3/15

Y1 - 2023/3/15

N2 - —Layered perovskite-like oxide K2La2Ti3O10 belonging to Ruddlesden-Popper phases was preparedby hydrothermal method from commercially available precursors. Various conditions, namely reaction time,temperature and precursors concentration were varied to prepare well-crystallized single phase product.Morphology, specific surface area, band gap and photocatalytic activity in reaction of hydrogen evolutionfrom methanol water solution had been investigated in comparison with oxide prepared by conventionalceramic method. Hydrothermally prepared oxide has an ultrafine plate-like morphology with 4–5 nm particles thickness and relatively big lateral sizes of about 2–5 μm. Obtained samples have ~10 times higher specific surface area and ~3 times higher photocatalytic activity comparing to the ceramic sample, however usingPt co-catalysts leads to the lower photocatalytic activity of hydrothermal sample comparing to ceramic one.Developed approach may be further used for preparation of organic-inorganic hybrids and monolayers basedon H2La2Ti3O10 for further enhancement of photocatalytic activity

AB - —Layered perovskite-like oxide K2La2Ti3O10 belonging to Ruddlesden-Popper phases was preparedby hydrothermal method from commercially available precursors. Various conditions, namely reaction time,temperature and precursors concentration were varied to prepare well-crystallized single phase product.Morphology, specific surface area, band gap and photocatalytic activity in reaction of hydrogen evolutionfrom methanol water solution had been investigated in comparison with oxide prepared by conventionalceramic method. Hydrothermally prepared oxide has an ultrafine plate-like morphology with 4–5 nm particles thickness and relatively big lateral sizes of about 2–5 μm. Obtained samples have ~10 times higher specific surface area and ~3 times higher photocatalytic activity comparing to the ceramic sample, however usingPt co-catalysts leads to the lower photocatalytic activity of hydrothermal sample comparing to ceramic one.Developed approach may be further used for preparation of organic-inorganic hybrids and monolayers basedon H2La2Ti3O10 for further enhancement of photocatalytic activity

KW - слоистый перовскит, титанат, гидротермальный синтез, нанопластинки, фотокатализ, получение водорода

KW - layered perovskite

KW - titanate

KW - hydrothermal synthesis

KW - nanoplatelets

KW - photocatalysis

KW - hydrogen production

M3 - Article

VL - 97

SP - 1232

EP - 1238

JO - Russian Journal of Physical Chemistry A

JF - Russian Journal of Physical Chemistry A

SN - 0036-0244

IS - 6

ER -