Research output: Contribution to journal › Article › peer-review
Synthesis of n-Alkoxy Derivatives of Layered Perovskite-Like Niobate HCa2Nb3O10 and Study of Their Photocatalytic Activity for Hydrogen Production from an Aqueous Solution of Methanol : нет. / Зверева, Ирина Алексеевна; Силюков, Олег Игоревич; Родионов, Иван Алексеевич; Минич, Яна Андреевна; Войтович, Владимир Владимирович; Курносенко, Сергей Алексеевич.
In: Catalysts, Vol. 11, No. 8, 897, 08.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Synthesis of n-Alkoxy Derivatives of Layered Perovskite-Like Niobate HCa2Nb3O10 and Study of Their Photocatalytic Activity for Hydrogen Production from an Aqueous Solution of Methanol
T2 - нет
AU - Зверева, Ирина Алексеевна
AU - Силюков, Олег Игоревич
AU - Родионов, Иван Алексеевич
AU - Минич, Яна Андреевна
AU - Войтович, Владимир Владимирович
AU - Курносенко, Сергей Алексеевич
N1 - Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/8
Y1 - 2021/8
N2 - A series of hybrid inorganic–organic niobates HCa2Nb3O10ROH, containing n-alkoxy groups of primary alcohols (R = Me, Et, Pr, Bu, Hx, and Dc) grafted in the interlayer space, has been studied for the first time in relation to photocatalytic hydrogen generation from a model 1 mol % aqueous solution of methanol under ultraviolet irradiation. Photocatalytic activity was measured both for bare samples and for their composites with Pt nanoparticles as a cocatalyst. The advanced measurement scheme allowed monitoring the volume concentration of a sample in a suspension during the experiment, its pH, and possible exfoliation of layered compounds into nanolayers. In the series of n-alkoxy derivatives, the maximum rate of hydrogen evolution was achieved over a Pt-loaded ethoxy derivative HCa2Nb3O10EtOH/Pt. Its apparent quantum efficiency of 20.6% in the 220–350 nm range was found not to be caused by changes in the light absorption region or specific surface area upon ethanol grafting. Moreover, the amounts of hydrogen released during the measurements significantly exceeded those of interlayer organic components, indicating that hydrogen is generated from the reaction solution rather than from the hybrid material.
AB - A series of hybrid inorganic–organic niobates HCa2Nb3O10ROH, containing n-alkoxy groups of primary alcohols (R = Me, Et, Pr, Bu, Hx, and Dc) grafted in the interlayer space, has been studied for the first time in relation to photocatalytic hydrogen generation from a model 1 mol % aqueous solution of methanol under ultraviolet irradiation. Photocatalytic activity was measured both for bare samples and for their composites with Pt nanoparticles as a cocatalyst. The advanced measurement scheme allowed monitoring the volume concentration of a sample in a suspension during the experiment, its pH, and possible exfoliation of layered compounds into nanolayers. In the series of n-alkoxy derivatives, the maximum rate of hydrogen evolution was achieved over a Pt-loaded ethoxy derivative HCa2Nb3O10EtOH/Pt. Its apparent quantum efficiency of 20.6% in the 220–350 nm range was found not to be caused by changes in the light absorption region or specific surface area upon ethanol grafting. Moreover, the amounts of hydrogen released during the measurements significantly exceeded those of interlayer organic components, indicating that hydrogen is generated from the reaction solution rather than from the hybrid material.
KW - photocatalysis
KW - inorganic-organic hybrid
KW - perovskite
KW - Niobate
KW - Alcohols
KW - Grafting
KW - Hydrogen
KW - Inorganic-organic hybrid
KW - Layered
KW - Niobate
KW - Perovskite
KW - Photocatalysis
KW - RAMAN-SPECTRA
KW - G-C3N4/BI4TI3O12
KW - grafting
KW - NANOSHEETS
KW - ION-EXCHANGE
KW - alcohols
KW - hydrogen
KW - COMPOSITE
KW - layered
KW - photocatalysis
KW - KCA2NB3O10
KW - PROTONATED FORMS
KW - WATER
KW - niobate
KW - perovskite
KW - inorganic-organic hybrid
KW - INTERCALATION
KW - OXIDES
UR - http://www.scopus.com/inward/record.url?scp=85111003498&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/d87c26ac-a159-3e48-9bc3-a4cbda00409b/
U2 - 10.3390/catal11080897
DO - 10.3390/catal11080897
M3 - Article
VL - 11
JO - Catalysts
JF - Catalysts
SN - 2073-4344
IS - 8
M1 - 897
ER -
ID: 84408776