Conductive metal organic framework for ion-selective membrane-free solid-contact potentiometric Cu2+ sensing

Xu, Longbin; Gan, Shiyu; Zhong, Lijie; Sun, Zhonghui; Tang, Yitian; Han, Tingting; Lin, Kanglong; Liao, Chunxian; He, Dequan; Ma, Yingming; Wang, Wei; Niu, Li

doi:10.1016/j.jelechem.2021.115923

Cited by 13 publications

(4 citation statements)

References 46 publications

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“…The application of MOF-based nanocomposites as a solid contact has been on the rise in recent years, owing to their high electrical conductivity, charge mobility, and surface area. 32,183,184 For the same reasons, MOFs are also widely used as a component of carbon paste in ISEs to improve their sensing performance. For example, 2D Cu-MOF : tricresyl phosphate (TCP) : graphite mixture in a ratio of 2.67 : 30.54 : 66.79 (wt/wt%) was prepared in the form of carbon paste for the detection of Cu 2 , where graphite, 2D Cu-MOF, and TCP acted as the matrix, the electroactive material, and the plasticizer, respectively.…”

Section: Nanocompositesmentioning

confidence: 99%

Recent advances in nanomaterial-based solid-contact ion-selective electrodes

Mirabootalebi,

Liu

2024

Analyst

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Section: Nanocompositesmentioning

confidence: 99%

Recent advances in nanomaterial-based solid-contact ion-selective electrodes

Mirabootalebi,

Liu

2024

Analyst

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“…Subsequently, in 2022, conductive nanoscale polyhedral Cu 3 (HHTP) 2 was fabricated by heating a degassed aqueous solution of Cu(COOCH 3 ) 2 •H 2 O and HHTP at 70 °C for 24 h, with the caps loosely covered. [100] Hydro/Solvothermal Strategy:…”

Section: Direct Reaction In Solutionmentioning

confidence: 99%

Recent Progress of Advanced Conductive Metal–Organic Frameworks: Precise Synthesis, Electrochemical Energy Storage Applications, and Future Challenges

Zhu

Gao

2022

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inherent disadvantage of unstable output, which means electrochemical energy storage and conversion devices are essential for storing and utilizing these energies at any time. [6] Supercapacitors (SCs), lithium-ion batteries (LIBs), lithium-sulfur (Li-S) batteries, and electrochemical water splitting can efficiently convert electricity into chemical energy for storage and thus have received extensive attention. [7] The performance of the energy storage devices mainly depends on the electrode materials and the performance of energy conversion devices mainly depends on catalysts. Therefore, the development of high-performance electrode materials and electrocatalysts is crucial.Metal-organic frameworks (MOFs), also known as porous coordination polymers, are a new type of porous crystalline material. [8] Obtained by bridging metal ions or clusters and organic ligands via well-defined coordination bonds, MOFs possess unique structures with ultrahigh specific surface area, tunable composition, adjustable pore structure, and abundant exposed active sites, exhibiting significant potential for applications in gas storage and separation, catalysis, sensing, and energy storage. [9,10] The regular open pore structures of MOFs enable them to effectively contact electrolytes and alleviate volume expansion during charging and discharging when serving as electrodes. Besides, the abundant exposed active sites and the ultrahigh specific surface area of MOFs can meet the performance requirements of electrocatalysts for water splitting and electrode materials for SCs and LIBs, the plentiful polar sites and the complex pore structure of MOFs can effectively adsorb polysulfides as sulfur host. [11,12] Therefore, in recent years, great efforts have been devoted to the use MOFs as electrode materials for supercapacitors, anode materials for LIBs, sulfur hosts for Li-S batteries, and electrocatalysts for water splitting.The pristine MOFs possess numerous electrochemically active sites, which are almost fully accessible due to the regular pore structures. However, MOFs are usually composed of metal ions and redox-inactive organic ligands, lack free charge carriers, and charge transport paths, and thus are mostly electrically insulating, meaning that only the part in contact with current collectors or conductive additives can gain electrons to participate in the reaction, resulting in low utilization of Metal-organic frameworks (MOFs) with diverse composition, tunable structure, and unique physicochemical properties have emerged as promising materials in various fields. The tunable pore structure, abundant active sites, and ultrahigh specific surface area can facilitate mass transport and provide outstanding capacity, making MOFs an ideal active material for electrochemical energy storage and conversion. However, the poor electrical conductivity of pristine MOFs severely limits their applications in electrochemistry. Developing conductive MOFs has proved to be an effective solution to this problem. This review focuses on the design and syn...

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“…In another work, Gan, Niu and coworkers further illustrated this ISM-free potentiometric sensing strategy by utilizing the 2D conductive MOF of Cu 3 (HHTP) 2 formed from Cu and 2, 3, 6, 7, 10, 11-hexahydroxytriphenylene (HHTP) as the solid contact bifunctional material to detect Cu(II), without a traditional ISM used. 48 A satisfactory Nernstian and selective response toward Cu(II) detection was disclosed, affording a slope of 29.5 AE 0.3 mV dec À1 . Notably the potentiometric response time was substantially reduced from about 50 s to 10 s. Moreover, the Cu 3 (HHTP) 2based bifunctional solid contact ISE also exhibited a short conditioning time at the minutes level and showed good tolerance toward organic solvents in comparison to the ISE with the ISM.…”

mentioning

confidence: 91%

“…2), with the polymeric ISM removed. [47][48][49] For instance, Gan and coworkers directly utilized Li-ion battery materials of LiFePO 4 and LiMn 2 O 4 for the Li ion recognition via the crystal ion intercalation and applied the fabricated non-membrane solid contact ISE to determine lithium in the human blood serum, giving a good Nernstian response. 47 The interfering ions, particularly Na + , did not have much influence.…”

mentioning

confidence: 99%

Emerging functional materials in solid-contact potentiometric sensing, a field full of vitality

2023

Mater. Chem. Front.

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Conductive metal organic framework for ion-selective membrane-free solid-contact potentiometric Cu2+ sensing

Cited by 13 publications

References 46 publications

Recent advances in nanomaterial-based solid-contact ion-selective electrodes

Recent advances in nanomaterial-based solid-contact ion-selective electrodes

Recent Progress of Advanced Conductive Metal–Organic Frameworks: Precise Synthesis, Electrochemical Energy Storage Applications, and Future Challenges

Emerging functional materials in solid-contact potentiometric sensing, a field full of vitality

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