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

Переведенное название: Синтез н-алкоксипроизводных слоистого перовскитоподобного ниобата HCa2Nb3O10 и исследование их фотокаталитической активности для получения водорода из водного раствора метанола : нет

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

4 Цитирования (Scopus)

Аннотация

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.
Переведенное названиеСинтез н-алкоксипроизводных слоистого перовскитоподобного ниобата HCa2Nb3O10 и исследование их фотокаталитической активности для получения водорода из водного раствора метанола : нет
Язык оригиналаанглийский
Номер статьи897
Число страниц22
ЖурналCatalysts
Том897
Номер выпуска11(8)
DOI
СостояниеОпубликовано - 2021

Предметные области Scopus

  • Химия и технология процессов

Ключевые слова

  • photocatalysis
  • inorganic-organic hybrid
  • perovskite
  • Niobate

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