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Facet-Dependent Photodegradation of Methylene Blue Using Pristine CeO₂ Nanostructures.

ABSTRACT: This work comprises the shape- and facet-dependent catalytic efficacies of different morphologies of CeO₂, namely, hexagonal, rectangular, and square. The formation of different shapes of CeO₂ is controlled using polyvinyl pyrrolidone as a surfactant. The surface reactivity of formation of differently exposed CeO₂ facets is thoroughly investigated using UV-visible, photoluminescence, Raman, and X-ray photoelectron spectroscopies. A correlation between the growth of a surface-reactive facet and the corresponding oxygen vacancies is also established. Considering the tremendous contamination, caused by the textile effluents, the present study articulates the facet-dependent photocatalytic activities of pristine CeO₂ for complete degradation of methylene blue within 175 min. The observed degradation time deploying pristine CeO₂ as a catalyst is the shortest to be reported in the literature to our best knowledge.

SUBMITTER: Majumder D

PROVIDER: S-EPMC6648310 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Facet-Dependent Photodegradation of Methylene Blue Using Pristine CeO2 Nanostructures.

Majumder Deblina D Chakraborty Indranil I Mandal Kalyan K Roy Somenath S

ACS omega 20190226 2

This work comprises the shape- and facet-dependent catalytic efficacies of different morphologies of CeO2, namely, hexagonal, rectangular, and square. The formation of different shapes of CeO2 is controlled using polyvinyl pyrrolidone as a surfactant. The surface reactivity of formation of differently exposed CeO2 facets is thoroughly investigated using UV-visible, photoluminescence, Raman, and X-ray photoelectron spectroscopies. A correlation between the growth ...[more]

PMID: 31459631

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