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Mirabootalebi SO, Liu Y. Recent advances in nanomaterial-based solid-contact ion-selective electrodes. Analyst 2024. [PMID: 38885067 DOI: 10.1039/d4an00334a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Solid-contact ion-selective electrodes (SC-ISEs) are advanced potentiometric sensors with great capability to detect a wide range of ions for the monitoring of industrial processes and environmental pollutants, as well as the determination of electrolytes for clinical analysis. Over the past decades, the innovative design of ion-selective electrodes (ISEs), specifically SC-ISEs, to improve potential stability and miniaturization for in situ/real-time analysis, has attracted considerable interest. Recently, the utilisation of nanomaterials was particularly prominent in SC-ISEs due to their excellent physical and chemical properties. In this article, we review the recent applications of various types of nanostructured materials that are composed of carbon, metals and polymers for the development of SC-ISEs. The challenges and opportunities in this field, along with the prospects for future applications of nanomaterials in SC-ISEs are also discussed.
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Affiliation(s)
| | - Yang Liu
- College of Science and Engineering, James Cook University, Townsville, Queensland 4811, Australia.
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Xu Y, Ben Y, Sun L, Su J, Guo H, Zhou R, Wei Y, Wei Y, Lu Y, Sun Y, Zhang X. Sensing platform for the highly sensitive detection of catechol based on composite coupling with conductive Ni 3(HITP) 2 and nanosilvers. Phys Chem Chem Phys 2024; 26:2951-2962. [PMID: 38214187 DOI: 10.1039/d3cp05391a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Catechol, which has a high toxicity and low degradability, poses significant risks to both human health and the environment. Tracking of catechol residues is essential to protect human health and to assess the safety of the environment. We constructed sensing platforms to detect catechol based on the conductive metal-organic frameworks [Ni3(HITP)2] and their nanosilver composites. The reduction process of catechol at the Ni3(HITP)2/AgNP electrode is chemically irreversible as a result of the difference in compatibility of the oxidation stability and conductivity between the Ni3(HITP)2/AgNS and Ni3(HITP)2/AgNP electrodes. The electrochemical results show that the Ni3(HITP)2/AgNS electrode presents a lower detection limit of 0.053 μM and better sensitivity, reproducibility and repeatability than the Ni3(HITP)2/AgNP electrode. The kinetic mechanism of the catechol electrooxidation at the surface of the electrode is controlled by diffusion through a 2H+/2e- process. The transfer coefficient is the key factor used to illustrate this process. During the electrochemical conversion of phenol to ketone, more than half of ΔG is used to change the activation energy. We also studied the stability, anti-interference and reproducibility of these electrode systems.
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Affiliation(s)
- Yuandong Xu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Yingying Ben
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Lili Sun
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Jishan Su
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Hui Guo
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Rongjia Zhou
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Yaqing Wei
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Yajun Wei
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Yongjuan Lu
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Yizhan Sun
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Xia Zhang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
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