A Polyaniline-Supported, Chromium-Based Metal-Organic Framework for Electrochemical Sensing of Cadmium(II)

Ekta Roy; Souvik Pal; Chung Wei Kung; Sheng Sheng Yu; Achala Nagar; Chia Her Lin

doi:10.1002/slct.202203574

A Polyaniline-Supported, Chromium-Based Metal-Organic Framework for Electrochemical Sensing of Cadmium(II)

Ekta Roy^*, Souvik Pal^*, Chung Wei Kung, Sheng Sheng Yu, Achala Nagar, Chia Her Lin^*

^*Corresponding author for this work

Department of Chemistry

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

1 Citation (Scopus)

Abstract

In this work a conducting electrochemical sensing probe, Cr-BDC-NH₂@PANI composite material (BDC=1,4-benzenedicarboxylate), was successfully synthesized by polymerization of conducting polyaniline (PANI) around the Cr-BDC-NH₂ material. The synthesized composite material was characterized by various analytical techniques. The Cr-BDC-NH₂@PANI composite was successfully dropped cast on the surface of an inexpensive pencil graphite electrode (PGE) to detect the cadmium ions at trace level. The selectivity of proposed sensor observed towards cadmium ion is due to chelation mechanism operating between cadmium ions and amine groups. Under optimized condition, the proposed sensor is capable of measuring cadmium ions in aqueous as well as in human blood serum, plasma, and various water samples within the range of 0.50-32.5 μg L⁻¹ with the limit of detection (LOD) of 0.20 μg L⁻¹. The Cr-BDC-NH₂@PANI composite material modified sensor shows high affinity and no interference with real samples.

Original language	English
Article number	e202203574
Journal	ChemistrySelect
Volume	7
Issue number	42
DOIs	https://doi.org/10.1002/slct.202203574
Publication status	Published - 2022 Nov 11

Keywords

cadmium sensing
electrochemical sensing
metal-organic frameworks (MOFs)
pencil graphite electrode (PGE)
polyaniline (PANI)

ASJC Scopus subject areas

General Chemistry

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10.1002/slct.202203574

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title = "A Polyaniline-Supported, Chromium-Based Metal-Organic Framework for Electrochemical Sensing of Cadmium(II)",

abstract = "In this work a conducting electrochemical sensing probe, Cr-BDC-NH2@PANI composite material (BDC=1,4-benzenedicarboxylate), was successfully synthesized by polymerization of conducting polyaniline (PANI) around the Cr-BDC-NH2 material. The synthesized composite material was characterized by various analytical techniques. The Cr-BDC-NH2@PANI composite was successfully dropped cast on the surface of an inexpensive pencil graphite electrode (PGE) to detect the cadmium ions at trace level. The selectivity of proposed sensor observed towards cadmium ion is due to chelation mechanism operating between cadmium ions and amine groups. Under optimized condition, the proposed sensor is capable of measuring cadmium ions in aqueous as well as in human blood serum, plasma, and various water samples within the range of 0.50-32.5 μg L−1 with the limit of detection (LOD) of 0.20 μg L−1. The Cr-BDC-NH2@PANI composite material modified sensor shows high affinity and no interference with real samples.",

keywords = "cadmium sensing, electrochemical sensing, metal-organic frameworks (MOFs), pencil graphite electrode (PGE), polyaniline (PANI)",

author = "Ekta Roy and Souvik Pal and Kung, {Chung Wei} and Yu, {Sheng Sheng} and Achala Nagar and Lin, {Chia Her}",

note = "Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH.",

year = "2022",

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doi = "10.1002/slct.202203574",

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AU - Roy, Ekta

AU - Pal, Souvik

AU - Kung, Chung Wei

AU - Yu, Sheng Sheng

AU - Nagar, Achala

AU - Lin, Chia Her

PY - 2022/11/11

Y1 - 2022/11/11

N2 - In this work a conducting electrochemical sensing probe, Cr-BDC-NH2@PANI composite material (BDC=1,4-benzenedicarboxylate), was successfully synthesized by polymerization of conducting polyaniline (PANI) around the Cr-BDC-NH2 material. The synthesized composite material was characterized by various analytical techniques. The Cr-BDC-NH2@PANI composite was successfully dropped cast on the surface of an inexpensive pencil graphite electrode (PGE) to detect the cadmium ions at trace level. The selectivity of proposed sensor observed towards cadmium ion is due to chelation mechanism operating between cadmium ions and amine groups. Under optimized condition, the proposed sensor is capable of measuring cadmium ions in aqueous as well as in human blood serum, plasma, and various water samples within the range of 0.50-32.5 μg L−1 with the limit of detection (LOD) of 0.20 μg L−1. The Cr-BDC-NH2@PANI composite material modified sensor shows high affinity and no interference with real samples.

AB - In this work a conducting electrochemical sensing probe, Cr-BDC-NH2@PANI composite material (BDC=1,4-benzenedicarboxylate), was successfully synthesized by polymerization of conducting polyaniline (PANI) around the Cr-BDC-NH2 material. The synthesized composite material was characterized by various analytical techniques. The Cr-BDC-NH2@PANI composite was successfully dropped cast on the surface of an inexpensive pencil graphite electrode (PGE) to detect the cadmium ions at trace level. The selectivity of proposed sensor observed towards cadmium ion is due to chelation mechanism operating between cadmium ions and amine groups. Under optimized condition, the proposed sensor is capable of measuring cadmium ions in aqueous as well as in human blood serum, plasma, and various water samples within the range of 0.50-32.5 μg L−1 with the limit of detection (LOD) of 0.20 μg L−1. The Cr-BDC-NH2@PANI composite material modified sensor shows high affinity and no interference with real samples.

KW - cadmium sensing

KW - electrochemical sensing

KW - metal-organic frameworks (MOFs)

KW - pencil graphite electrode (PGE)

KW - polyaniline (PANI)

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A Polyaniline-Supported, Chromium-Based Metal-Organic Framework for Electrochemical Sensing of Cadmium(II)

Abstract

Keywords

ASJC Scopus subject areas

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