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Development of Cuboidal KNbO3@?-Fe2O3 Hybrid Nanostructures for Improved Photocatalytic and Photoelectrocatalytic Applications.

ABSTRACT: Monophasic and hybrid nanostructures of KNbO3 and ?-Fe2O3 have been prepared using a hydrothermal process for photoelectrocatalytic and photocatalytic applications. Powder X-ray diffraction studies showed the formation of KNbO3, ?-Fe2O3, and KNbO3/?-Fe2O3 with average grain sizes of 18.3, 11.5, and 26.1 nm and Brunauer-Emmett-Teller (BET) specific surface areas of 4, 100, and 20 m2/gm, respectively. Under simulated solar irradiation, the as-prepared heterostructure shows enhanced photoelectrocatalytic oxygen evolution reaction (OER) activity compared to pristine KNbO3 and ?-Fe2O3. Significant photocatalytic activity of as-synthesized KNbO3/?-Fe2O3 heterostructure photocatalyst was obtained for removal of methylene blue organic dye under visible light, and the percentage activity was found to be 11, 49, and 89% for KNbO3, ?-Fe2O3, and KNbO3/?-Fe2O3 photocatalysts, respectively. The dielectric constant was found to be 250.2, 65.2, and 251.5 for KNbO3, ?-Fe2O3, and KNbO3/?-Fe2O3 heterostructure, respectively, at 50 °C and 500 kHz frequency.

SUBMITTER: Farooq U

PROVIDER: S-EPMC7439387 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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Development of Cuboidal KNbO3@α-Fe2O3 Hybrid Nanostructures for Improved Photocatalytic and Photoelectrocatalytic Applications.

Farooq Umar U Chaudhary Preeti P Ingole Pravin P PP Kalam Abul A Ahmad Tokeer T

ACS omega 20200809 32

Monophasic and hybrid nanostructures of KNbO3 and α-Fe2O3 have been prepared using a hydrothermal process for photoelectrocatalytic and photocatalytic applications. Powder X-ray diffraction studies showed the formation of KNbO3, α-Fe2O3, and KNbO3/α-Fe2O3 with average grain sizes of 18.3, 11.5, and 26.1 nm and Brunauer-Emmett-Teller (BET) specific surface areas of 4, 100, and 20 m2/gm, r ...[more]

PMID: 32832802

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Dataset Information

Development of Cuboidal KNbO3@?-Fe2O3 Hybrid Nanostructures for Improved Photocatalytic and Photoelectrocatalytic Applications.

Publications

Development of Cuboidal KNbO<sub>3</sub>@α-Fe<sub>2</sub>O<sub>3</sub> Hybrid Nanostructures for Improved Photocatalytic and Photoelectrocatalytic Applications.

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