Recent advances in metal-organic framework (MOF)-based agricultural sensors for metal ions: a review

Lu, Xinyu; Jayakumar, Kumarasamy; Wen, Yangping; Hojjati-Najafabadi, Akbar; Duan, Xuemin; Xu, Jingkun

doi:10.1007/s00604-023-06121-2

Microchim Acta

2023

DOI: 10.1007/s00604-023-06121-2

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Recent advances in metal-organic framework (MOF)-based agricultural sensors for metal ions: a review

Xinyu Lu,

Kumarasamy Jayakumar,

Yangping Wen

et al.

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2024

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Cited by 22 publications

References 144 publications

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Metal‐Organic Framework (MOF)‐Based Sensors for Mercury (Hg) Detection: Design Strategies and Recent Progress

Ma,

Zhang,

Xiang

et al. 2024

Chemistry A European J

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Monitoring mercury (Hg) is critical for environmental and public health. Metal‐organic framework (MOF)‐based sensors demonstrate the advantage of high sensitivity and rapid response. We summarize the advances of MOF sensors for Hg2+ detection from the perspective of MOF type and role in the sensors. First, we introduce three MOFs used in Hg sensors—UIO, ZIF, and MIL—that have demonstrated superior performance. Then, we discuss the specifics of MOF‐based sensors for Hg2+ detection in terms of the recognition and signal elements. Currently, the recognition elements include T‐rich aptamers, noble metal nanoparticles, central metal ions, and organic functional groups inherent to MOFs. Sensors with fluorescence and colorimetric signals are the two main types of optical MOF sensors used for Hg detection. Electrochemical sensors have also been fabricated, but these are less frequently reported, potentially due to the limited conductivity and cycling stability of MOFs. Notably, dual‐signal sensors mitigate background signals interference and enhance the accuracy of Hg2+ detection. Furthermore, to facilitate portability and user‐friendliness, portable devices such as microfluidics, paper‐based devices, and smartphones have been developed for Hg2+ detection, showcasing potential applications. We also address the challenges related to MOF‐based sensors for Hg2+ and future outlook.

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Metal‐Organic Framework (MOF)‐Based Sensors for Mercury (Hg) Detection: Design Strategies and Recent Progress

Ma,

Zhang,

Xiang

et al. 2024

Chemistry A European J

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Development of MOF-derived Co3O4 microspheres composed of fiber stacks for simultaneous electrochemical detection of Pb2+ and Cu2+

Guo,

Li,

Xing

et al. 2024

Microchim Acta

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As an ideal transition metal oxide, Co3O4 is a P-type semiconductor with excellent electrical conductivity, non-toxicity and low cost. This work reports the successful construction of Co3O4 materials derived from metal-organic frameworks (MOFs) using a surfactant micelle template-solvothermal method. The modified electrodes are investigated for their ability to electrochemically detect Pb2+ and Cu2+ in aqueous environments. By adjusting the mass ratios of alkaline modifiers, the morphological microstructures of Co3O4-X exhibit a transition from distinctive microspheres composed of fiber stacks to rods. The results indicate that Co3O4-1(NH4F/CO(NH2)2 = 1:0) has a distinctive microsphere structure composed of stacked fibers, unlike the other two materials. Co3O4-1/GCE is used as the active material of the modified electrode, it shows the largest peak response currents to Pb2+ and Cu2+, and efficiently detects Pb2+ and Cu2+ in the aqueous environment individually and simultaneously. The linear response range of Co3O4-1/GCE for the simultaneous detection of Pb2+ and Cu2+ is 0.5–1.5 μM, with the limits of detection (LOD, S/N = 3) are 9.77 nM and 14.97 nM, respectively. The material exhibits a favorable electrochemical response, via a distinctive Co3O4-1 microsphere structure composed of stacked fibers. This structure enhances the number of active adsorption sites on the material, thereby facilitating the adsorption of heavy metal ions (HMIs). The presence of oxygen vacancies (OV) can also facilitate the adsorption of ions. The Co3O4-1/GCE electrode also exhibits excellent anti-interference ability, stability, and repeatability. This is of great practical significance for detecting Pb2+ and Cu2+ in real water samples and provides a new approach for developing high-performance metal oxide electrochemical sensors derived from MOFs. Graphical abstract

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Recent progress of black phosphorene from preparation to diversified bio-/chemo-nanosensors and their challenges and opportunities for comprehensive health

Xue,

Lu,

Wen

et al. 2024

Microchim Acta

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Recent advances in metal-organic framework (MOF)-based agricultural sensors for metal ions: a review

Cited by 22 publications

References 144 publications

Metal‐Organic Framework (MOF)‐Based Sensors for Mercury (Hg) Detection: Design Strategies and Recent Progress

Metal‐Organic Framework (MOF)‐Based Sensors for Mercury (Hg) Detection: Design Strategies and Recent Progress

Development of MOF-derived Co3O4 microspheres composed of fiber stacks for simultaneous electrochemical detection of Pb2+ and Cu2+

Recent progress of black phosphorene from preparation to diversified bio-/chemo-nanosensors and their challenges and opportunities for comprehensive health

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