Cu-Based Metal-Organic Framework Nanoparticles for Sensing Cr(VI) Ions

Wei Shi; Mengqi He; Weitao Li; Xing Wei; Brian Bui; Mingli Chen; Wei Chen

doi:10.1021/acsanm.0c03118

Cu-Based Metal-Organic Framework Nanoparticles for Sensing Cr(VI) Ions

Wei Shi
, Mengqi He
, Weitao Li
, Xing Wei
, Brian Bui
, Mingli Chen^*
, Wei Chen^*

^*Corresponding author for this work

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

70 Citations (Scopus)

Abstract

A nanoscale MOF-199 was synthesized in a simple and fast way by mixing btc triethylammonium and copper nitrate solution at room temperature and characterized by scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction. The mimicking enzyme activity and the steady-state kinetics of the nanozyme were investigated. The prepared MOF-199 was a uniformly nanosized octahedron, and it exhibited excellent Cr(VI)-activated oxidoreductase catalytic properties. MOF-199 was employed as a catalyst; in 5 min, 3,3′,5,5′-tetramethylbenzidine (TMB) was oxidized by Cr(VI) into a bluish and oxidized TMB, which was recorded by UV-vis spectroscopy, and the mechanism was discussed. It facilitated the sensing of Cr(VI), and a linear range of 0.1-30 μM was obtained with a limit of detection of 20 nM. The selectivity of the present method for Cr(VI) was excellent, and its application to environmental water samples was accomplished.

Original language	English
Pages (from-to)	802-810
Number of pages	9
Journal	ACS Applied Nano Materials
Volume	4
Issue number	1
DOIs	https://doi.org/10.1021/acsanm.0c03118
Publication status	Published - 22 Jan 2021
Externally published	Yes

Keywords

Cr(VI)
MOF-based nanozyme
nanozyme probe
oxidoreductase-like
sensing

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10.1021/acsanm.0c03118

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@article{dfe3e9ae63394d9ea7cac374dca13ac9,

title = "Cu-Based Metal-Organic Framework Nanoparticles for Sensing Cr(VI) Ions",

abstract = "A nanoscale MOF-199 was synthesized in a simple and fast way by mixing btc triethylammonium and copper nitrate solution at room temperature and characterized by scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction. The mimicking enzyme activity and the steady-state kinetics of the nanozyme were investigated. The prepared MOF-199 was a uniformly nanosized octahedron, and it exhibited excellent Cr(VI)-activated oxidoreductase catalytic properties. MOF-199 was employed as a catalyst; in 5 min, 3,3′,5,5′-tetramethylbenzidine (TMB) was oxidized by Cr(VI) into a bluish and oxidized TMB, which was recorded by UV-vis spectroscopy, and the mechanism was discussed. It facilitated the sensing of Cr(VI), and a linear range of 0.1-30 μM was obtained with a limit of detection of 20 nM. The selectivity of the present method for Cr(VI) was excellent, and its application to environmental water samples was accomplished.",

keywords = "Cr(VI), MOF-based nanozyme, nanozyme probe, oxidoreductase-like, sensing",

author = "Wei Shi and Mengqi He and Weitao Li and Xing Wei and Brian Bui and Mingli Chen and Wei Chen",

note = "Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

year = "2021",

month = jan,

day = "22",

doi = "10.1021/acsanm.0c03118",

language = "English",

volume = "4",

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T1 - Cu-Based Metal-Organic Framework Nanoparticles for Sensing Cr(VI) Ions

AU - Shi, Wei

AU - He, Mengqi

AU - Li, Weitao

AU - Wei, Xing

AU - Bui, Brian

AU - Chen, Mingli

AU - Chen, Wei

PY - 2021/1/22

Y1 - 2021/1/22

N2 - A nanoscale MOF-199 was synthesized in a simple and fast way by mixing btc triethylammonium and copper nitrate solution at room temperature and characterized by scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction. The mimicking enzyme activity and the steady-state kinetics of the nanozyme were investigated. The prepared MOF-199 was a uniformly nanosized octahedron, and it exhibited excellent Cr(VI)-activated oxidoreductase catalytic properties. MOF-199 was employed as a catalyst; in 5 min, 3,3′,5,5′-tetramethylbenzidine (TMB) was oxidized by Cr(VI) into a bluish and oxidized TMB, which was recorded by UV-vis spectroscopy, and the mechanism was discussed. It facilitated the sensing of Cr(VI), and a linear range of 0.1-30 μM was obtained with a limit of detection of 20 nM. The selectivity of the present method for Cr(VI) was excellent, and its application to environmental water samples was accomplished.

AB - A nanoscale MOF-199 was synthesized in a simple and fast way by mixing btc triethylammonium and copper nitrate solution at room temperature and characterized by scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction. The mimicking enzyme activity and the steady-state kinetics of the nanozyme were investigated. The prepared MOF-199 was a uniformly nanosized octahedron, and it exhibited excellent Cr(VI)-activated oxidoreductase catalytic properties. MOF-199 was employed as a catalyst; in 5 min, 3,3′,5,5′-tetramethylbenzidine (TMB) was oxidized by Cr(VI) into a bluish and oxidized TMB, which was recorded by UV-vis spectroscopy, and the mechanism was discussed. It facilitated the sensing of Cr(VI), and a linear range of 0.1-30 μM was obtained with a limit of detection of 20 nM. The selectivity of the present method for Cr(VI) was excellent, and its application to environmental water samples was accomplished.

KW - Cr(VI)

KW - MOF-based nanozyme

KW - nanozyme probe

KW - oxidoreductase-like

KW - sensing

UR - https://www.scopus.com/pages/publications/85099825139

U2 - 10.1021/acsanm.0c03118

DO - 10.1021/acsanm.0c03118

M3 - Article

AN - SCOPUS:85099825139

SN - 2574-0970

VL - 4

SP - 802

EP - 810

JO - ACS Applied Nano Materials

JF - ACS Applied Nano Materials

IS - 1

ER -

Cu-Based Metal-Organic Framework Nanoparticles for Sensing Cr(VI) Ions

Abstract

Keywords

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