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Leveraging the photocatalytic Cr (VI) reduction by an IRMOF-3@NH-MIL-101 (Fe) heterostructure based on interfacial Lewis acid-base interaction. | LitMetric

Leveraging the photocatalytic Cr (VI) reduction by an IRMOF-3@NH-MIL-101 (Fe) heterostructure based on interfacial Lewis acid-base interaction.

Chemosphere

Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, India, 603203. Electronic address:

Published: March 2024

AI Article Synopsis

Article Abstract

A strategy to enhance the photocatalytic performance of metal-organic framework (MOF) based systems for the efficient elimination of Cr(VI) ions from polluted water under visible light irradiation has been developed by constructing MOF@MOF heterojunctions. Specifically, IRMOF-3 was grown in situ around NH-MIL-101(Fe) based on interfacial Lewis acid-base interaction using 2-aminoterephthalic acid (ATA) as a linker, resulting in the formation of a MOF@MOF heterojunction, designated as IRMOF-3@NH-MIL-101(Fe). In comparison to individual MOFs, the IRMOF-3@NH-MIL-101(Fe) heterojunction exhibited a significantly higher photocatalytic reduction efficiency for Cr(VI), achieving a reduction of 95.98% within 120 min under visible-light irradiation. This performance surpasses that of individual MOFs and most reported photocatalysts. Additionally, the mechanism underlying Cr(VI) reduction by IRMOF-3@NH-MIL-101(Fe) was comprehensively elucidated by analyzing optoelectronic properties, energy band structure, and structural results. It is worth noting that this study represents the first documented instance of photocatalytic Cr(VI) reduction utilizing IRMOF-3 and its interaction with NH-MIL-101(Fe). The MOF@MOF photocatalyst, leveraging the synergistic effects of its various components, holds great promise for efficiently removing harmful pollutants from water and finds significant potential applications in environmental remediation.

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Source
http://dx.doi.org/10.1016/j.chemosphere.2024.141473DOI Listing

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