An Amine-Functionalized Iron(III) Metal–Organic Framework as Efficient Visible-Light Photocatalyst for Cr(VI) Reduction

Li Shi; Tao Wang; Huabin Zhang; Kun Chang; Xianguang Meng; Huimin Liu; Jinhua Ye

doi:10.1002/advs.201500006

An Amine-Functionalized Iron(III) Metal–Organic Framework as Efficient Visible-Light Photocatalyst for Cr(VI) Reduction

Li Shi, Tao Wang, Huabin Zhang, Kun Chang, Xianguang Meng, Huimin Liu, Jinhua Ye

Research output: Contribution to journal › Article › peer-review

395 Scopus citations

Abstract

The photocatalytic reduction of Cr(VI) is investigated over iron(III)-based metal–organic frameworks (MOFs) structured as MIL-88B. It is found that MIL-88B (Fe) MOFs, containing Fe3-μ3-oxo clusters, can be used as photocatalyst for the reduction of Cr(VI) under visible light irradiation, which is due to the direct excitation of Fe3-μ3-oxo clusters. The amine-functionalized MIL-88B (Fe) MOFs (denoted as NH2–MIL-88B (Fe)) shows much higher efficiency for the photocatalytic Cr(VI) reduction under visible-light irradiation compared with MIL-88B (Fe). It is revealed that in addition to the direct excitation of Fe3-μ3-oxo clusters, the amine functionality in NH2–MIL-88B (Fe) can also be excited and then transferred an electron to Fe3-μ3-oxo clusters, which is responsible for the enhanced photocatalytic activity for Cr(VI) reduction. The enhanced photocatalytic activity for Cr(VI) reduction is also achieved for other two amine-functionalized iron(III)-based MOFs (NH2–MIL-53 (Fe) and NH2–MIL-101 (Fe)).

Original language	English (US)
Journal	Advanced Science
Volume	2
Issue number	3
DOIs	https://doi.org/10.1002/advs.201500006
State	Published - Mar 1 2015
Externally published	Yes

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title = "An Amine-Functionalized Iron(III) Metal–Organic Framework as Efficient Visible-Light Photocatalyst for Cr(VI) Reduction",

abstract = "The photocatalytic reduction of Cr(VI) is investigated over iron(III)-based metal–organic frameworks (MOFs) structured as MIL-88B. It is found that MIL-88B (Fe) MOFs, containing Fe3-μ3-oxo clusters, can be used as photocatalyst for the reduction of Cr(VI) under visible light irradiation, which is due to the direct excitation of Fe3-μ3-oxo clusters. The amine-functionalized MIL-88B (Fe) MOFs (denoted as NH2–MIL-88B (Fe)) shows much higher efficiency for the photocatalytic Cr(VI) reduction under visible-light irradiation compared with MIL-88B (Fe). It is revealed that in addition to the direct excitation of Fe3-μ3-oxo clusters, the amine functionality in NH2–MIL-88B (Fe) can also be excited and then transferred an electron to Fe3-μ3-oxo clusters, which is responsible for the enhanced photocatalytic activity for Cr(VI) reduction. The enhanced photocatalytic activity for Cr(VI) reduction is also achieved for other two amine-functionalized iron(III)-based MOFs (NH2–MIL-53 (Fe) and NH2–MIL-101 (Fe)).",

author = "Li Shi and Tao Wang and Huabin Zhang and Kun Chang and Xianguang Meng and Huimin Liu and Jinhua Ye",

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T1 - An Amine-Functionalized Iron(III) Metal–Organic Framework as Efficient Visible-Light Photocatalyst for Cr(VI) Reduction

AU - Shi, Li

AU - Wang, Tao

AU - Zhang, Huabin

AU - Chang, Kun

AU - Meng, Xianguang

AU - Liu, Huimin

AU - Ye, Jinhua

N1 - Generated from Scopus record by KAUST IRTS on 2022-09-15

PY - 2015/3/1

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N2 - The photocatalytic reduction of Cr(VI) is investigated over iron(III)-based metal–organic frameworks (MOFs) structured as MIL-88B. It is found that MIL-88B (Fe) MOFs, containing Fe3-μ3-oxo clusters, can be used as photocatalyst for the reduction of Cr(VI) under visible light irradiation, which is due to the direct excitation of Fe3-μ3-oxo clusters. The amine-functionalized MIL-88B (Fe) MOFs (denoted as NH2–MIL-88B (Fe)) shows much higher efficiency for the photocatalytic Cr(VI) reduction under visible-light irradiation compared with MIL-88B (Fe). It is revealed that in addition to the direct excitation of Fe3-μ3-oxo clusters, the amine functionality in NH2–MIL-88B (Fe) can also be excited and then transferred an electron to Fe3-μ3-oxo clusters, which is responsible for the enhanced photocatalytic activity for Cr(VI) reduction. The enhanced photocatalytic activity for Cr(VI) reduction is also achieved for other two amine-functionalized iron(III)-based MOFs (NH2–MIL-53 (Fe) and NH2–MIL-101 (Fe)).

AB - The photocatalytic reduction of Cr(VI) is investigated over iron(III)-based metal–organic frameworks (MOFs) structured as MIL-88B. It is found that MIL-88B (Fe) MOFs, containing Fe3-μ3-oxo clusters, can be used as photocatalyst for the reduction of Cr(VI) under visible light irradiation, which is due to the direct excitation of Fe3-μ3-oxo clusters. The amine-functionalized MIL-88B (Fe) MOFs (denoted as NH2–MIL-88B (Fe)) shows much higher efficiency for the photocatalytic Cr(VI) reduction under visible-light irradiation compared with MIL-88B (Fe). It is revealed that in addition to the direct excitation of Fe3-μ3-oxo clusters, the amine functionality in NH2–MIL-88B (Fe) can also be excited and then transferred an electron to Fe3-μ3-oxo clusters, which is responsible for the enhanced photocatalytic activity for Cr(VI) reduction. The enhanced photocatalytic activity for Cr(VI) reduction is also achieved for other two amine-functionalized iron(III)-based MOFs (NH2–MIL-53 (Fe) and NH2–MIL-101 (Fe)).

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An Amine-Functionalized Iron(III) Metal–Organic Framework as Efficient Visible-Light Photocatalyst for Cr(VI) Reduction

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