Engineered bi-functional hydrophilic/hydrophobic yolk@shell architectures: A rational strategy for non-time dependent ultra selective photocatalytic oxidation

Engineered graphene highly wrapped yolk@shell TiO2 (G-HW-Y@S-TiO2) architectures were synthesized from fundamental understanding using a multi-step approach as advanced photocatalytic nanomaterials. The resultant G-HW-Y@S-TiO2 architecture exhibited a superior selective photocatalytic performance in visible light oxidation of aromatic alcohols to corresponding aldehydes (up to 99% in 4 h reaction). Interestingly, the aldehyde was still obtained as single oxidation product after 12 h in presence of G-HW-Y@S-TiO2 structure. The observed non-time dependent photocatalytic oxidation selectivity can be attributed to the engineered photocatalyst architecture with different hydrophilic level sites between inner core and outer shell that force the hydrophobic aldehyde products to diffuse out from the hydrophilic void space preventing further over-oxidation. © 2018

Авторы
Ziarati A.1 , Badiei A.1 , Luque R. 2, 3
Издательство
Elsevier B.V.
Язык
Английский
Страницы
72-78
Статус
Опубликовано
Том
240
Год
2019
Организации
  • 1 School of Chemistry, College of Science, University of Tehran, Tehran, Iran
  • 2 Departamento de Quimica Organica, Universidad de Cordoba, Campus de Rabanales, Edificio Marie Curie, Cordoba, E-14014, Spain
  • 3 Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya str., Moscow, 117198, Russian Federation
Ключевые слова
Bi-functional; Engineered; Nanoarchitecture; Photocatalysis; Selective oxidations; Visible light activation
Дата создания
04.02.2019
Дата изменения
04.02.2019
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/36147/