Lei, Peng, Zhou, Ying, Dong, Chuan, Liu, Yang, and Shuang, Shaomin (2023) CoNi–MOF–Graphene Magnetic Nanocomposites for the Electrocatalytic Detection of Glucose and the Efficient Removal of Organic Dyes. ACS Applied Nano Materials, 6. pp. 9369-9375.

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Abstract

The design of a nanocomposite with electrocatalytic activity and recyclable development for the detection of small biomolecules and the removal of environmental pollutants has received enormous attention. A magnetic nanocomposite was synthesized by the hydrothermal approach comprising two building units: metal–organic frameworks (MOFs) and graphene (GR). GR accumulated organic ligands through the large specific surface area and cobalt (Co) and nickel (Ni) served as coordination ions to seamlessly connect with the former for forming CoNi–MOFs–GR (CNMs–GR) to improve the conductivity of MOFs and the electrocatalytic activity of GR. The nanocomposite was utilized to construct an electrochemical sensing platform for the detection of glucose in human blood serum and the removal of organic dyes (methylene blue (MB), congo red (CR), and neutral red (NR)) in water. The CNMs–GR-modified electrode exhibited good electrochemical performance toward glucose in a wide linear range of 10–2900 μM with a detection limit of 1.27 μM. The maximum uptake capacity of CNMs–GR for MB, CR, and NR was 184.29, 912.47, and 894.36 mg/g, respectively. Most obviously, this work provided a strategy for the design of an effective bifunctional nanocomposite, which not only demonstrated the enormous potential for detection of glucose but also realized the removal of organic dyes.

Item ID:	78753
Item Type:	Article (Research - C1)
ISSN:	2574-0970
Keywords:	magnetic nanocomposite, electrocatalyst, adsorbent, glucose oxidation, organic dyes adsorption
Copyright Information:	© 2023 American Chemical Society.
Date Deposited:	26 May 2023 05:54
FoR Codes:	34 CHEMICAL SCIENCES > 3401 Analytical chemistry > 340103 Electroanalytical chemistry @ 50% 41 ENVIRONMENTAL SCIENCES > 4105 Pollution and contamination > 410599 Pollution and contamination not elsewhere classified @ 50%
SEO Codes:	28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280105 Expanding knowledge in the chemical sciences @ 60% 18 ENVIRONMENTAL MANAGEMENT > 1803 Fresh, ground and surface water systems and management > 180306 Measurement and assessment of freshwater quality (incl. physical and chemical conditions of water) @ 40%
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