One-step solvent thermal synthesis of 3D networked MOF composites for preparation of an ultrasensitive chemosensor for hydroquinone and catechol

Xuemei Wang; Yuan Ma; Jing Ru; Lin Fan; Rao Peng; Xinzhen Du; Xiaoquan Lu

doi:10.1007/s00604-024-06349-6

One-step solvent thermal synthesis of 3D networked MOF composites for preparation of an ultrasensitive chemosensor for hydroquinone and catechol

Mikrochim Acta. 2024 Apr 18;191(5):274. doi: 10.1007/s00604-024-06349-6.

Authors

Xuemei Wang^{1

2}, Yuan Ma³, Jing Ru⁴, Lin Fan³, Rao Peng³, Xinzhen Du^{3

5}, Xiaoquan Lu^{3

5}

Affiliations

¹ Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection, Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China. wangxuemei@nwnu.edu.cn.
² Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, Lanzhou, 730070, China. wangxuemei@nwnu.edu.cn.
³ Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection, Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
⁴ College of New Energy Materials and Chemistry, Leshan Normal University, Leshan, 614000, People's Republic of China.
⁵ Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, Lanzhou, 730070, China.

PMID: 38635036
DOI: 10.1007/s00604-024-06349-6

Abstract

Pharmaceuticals and personal care products (PPCPs) have a significant impact on the environment and human health, due to their sometimes toxic and carcinogenic characteristics. Therefore, an innovative chemosensor was constructed for ultrasensitive determination of two typical PCCPs (hydroquinone (HQ) and catechol (CC)) in several minutes. The homemade chemosensor (UiO-67@GO/MWCNTs) consisted of MOF(UiO-67), graphene oxide (GO), and multi-walled carbon nanotubes (MWCNTs) composites; it was a networked, structurally sparse, porosity-rich, homogeneous octahedral composite, and had ultra-high electrical conductivity, which provided lots of active adsorption sites, promote charge transfer, and enrich lots of molecules to be measured in a few minutes. The prepared electrochemical sensor showed good long-term stability, applicability, reproducibility, and immunity to interference for the determination of HQ and CC, with a wide linear range of response of 5.0 ~ 940 µM for both HQ and CC, and a low limit of detection with satisfactory recoveries. In addition, a new strategy of using MOF composites as the basis for electrochemical determination of organic small molecules was established, and a new platform was constructed for the quantitative determination of organic small molecules in various environmental samples.

Keywords: Catechol (CC); Differential pulse voltammetry; Electrochemical sensor (ECS); Hydroquinone (HQ); Modified electrode.

Abstract

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