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@article{0cf04ab0199a447dacf0141b825d4f8f,
title = "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",
abstract = "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.",
keywords = "photocatalysis, inorganic-organic hybrid, perovskite, Niobate, Alcohols, Grafting, Hydrogen, Inorganic-organic hybrid, Layered, Niobate, Perovskite, Photocatalysis, RAMAN-SPECTRA, G-C3N4/BI4TI3O12, grafting, NANOSHEETS, ION-EXCHANGE, alcohols, hydrogen, COMPOSITE, layered, photocatalysis, KCA2NB3O10, PROTONATED FORMS, WATER, niobate, perovskite, inorganic-organic hybrid, INTERCALATION, OXIDES",
author = "Зверева, {Ирина Алексеевна} and Силюков, {Олег Игоревич} and Родионов, {Иван Алексеевич} and Минич, {Яна Андреевна} and Войтович, {Владимир Владимирович} and Курносенко, {Сергей Алексеевич}",
note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",
year = "2021",
month = aug,
doi = "10.3390/catal11080897",
language = "English",
volume = "11",
journal = "Catalysts",
issn = "2073-4344",
publisher = "MDPI AG",
number = "8",

}

RIS

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