Post-transition metal/polymer composites for the separation and sensing of alkali metal ions

Merhebi, Salma; Mohammad, Munirah; Mayyas, Mohannad; Zhang, Chengchen; Cai, Shengxiang; Centurion, Franco; Xie, Wanjie; Cao, Zhengjun; Tang, Junma; Rahim, Md. Arifur; Zhang, Jin; Razmjou, Amir; Leslie, Greg; Kalantar‐zadeh, Kourosh; Tang, Jianbo; Allioux, François-Marie

doi:10.1039/d1ta02664j

Cited by 14 publications

(14 citation statements)

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“…45 The Raman spectrum of liquid Ga showed a characteristic band at ∼705 cm −1 corresponding to Ga 2 O 3 present in the native surface oxide layer. 50,51 The Ga 2 O 3 band is, however, not detected in the PDA–Ga 3+ films, which indicated the dissolution of the Ga oxide layer during the PDA functionalisation in the DA-HCl Tris buffer solution. 45…”

Section: Resultsmentioning

confidence: 95%

A liquid metal–polydopamine composite for cell culture and electro-stimulation

et al. 2023

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Section: Resultsmentioning

confidence: 95%

A liquid metal–polydopamine composite for cell culture and electro-stimulation

et al. 2023

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“…(B) Ga and In nanoadditives incorporated within PVA/maleic acid matrix for (i) separation and (ii) selective sensing of Li + . Adapted with permission from ref . Copyright 2021 Royal Society of Chemistry.…”

Section: Lm-based Chemical Sensorsmentioning

confidence: 99%

“…Thus, Li + ions could be electrochemically quantified. The selective hindrance to Li + diffusion was attributed to the presence of Ga oxide and hydroxide species generated from the nanoadditive, which provides specific binding sites to Li + ions (Figure B) …”

Section: Lm-based Chemical Sensorsmentioning

confidence: 99%

“…The selective hindrance to Li + diffusion was attributed to the presence of Ga oxide and hydroxide species generated from the nanoadditive, which provides specific binding sites to Li + ions (Figure 7B). 131 Electrochemical Biosensors. Ga-based LMs are versatile materials for electrochemical biosensing owing to their conductivity and easy-to-functionalize interfaces.…”

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Emerging Role of Liquid Metals in Sensing

Baharfar

Kalantar‐zadeh

2022

ACS Sens.

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Low melting point metals and alloys are the group of materials that combine metallic and liquid properties, simultaneously. The fascinating characteristics of liquid metals (LMs) including softness and high electrical and thermal conductivity, as well as their unique interfacial chemistry, have started to dominate various research disciplines. Utilization of LMs as responsive interfaces, enabling sensing in a flexible and versatile manner, is one of the most promising traits demonstrated for LMs. In the context of LMs-enabled sensors, gallium (Ga) and its alloys have emerged as multipurpose functional materials with many compelling physical and chemical properties. Responsiveness to different stimuli and easy-to-functionalize interfaces of Ga-based LMs make them ideal candidates for a variety of sensing applications. However, despite the vast capabilities of Ga-based LMs in sensing, applications of these materials for developing different sensors have not been fully explored. In the present review, we provide a comprehensive overview regarding the applications of Ga-based LMs in a wide range of sensing approaches that cover different physical and chemical sensors. The unique features of Ga-based LMs, which make them promising materials for sensing, are discussed in subsections followed by relevant case studies. Finally, challenges as well as the prospected future and developing motifs are highlighted for each type of LM-based sensors.

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“…Much research efforts have been devoted to improving ion selectivity of various membranes such as Graphene Oxide (GO), [ 8,9 ] Vermiculite‐based membranes, [ 10 ] MXenes, [ 11 ] and post‐transition metal/polymer composites. [ 12 ] Among 2D membranes, GO membranes in particular have been investigated thoroughly, for instance, a variety of guest molecules have been introduced in between the GO nanosheets to change either nanochannels’ size or their surface charge. [ 9,13 ] Nevertheless, none of these membranes shows a selectivity ratio of lithium to other monovalent ions higher than 10.…”

Section: Introductionmentioning

confidence: 99%

Designing Angstrom‐Scale Asymmetric MOF‐on‐MOF Cavities for High Monovalent Ion Selectivity

et al. 2022

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Biological ion channels feature angstrom‐scale asymmetrical cavity structures, which are the key to achieving highly efficient separation and sensing of alkali metal ions from aqueous resources. The clean energy future and lithium‐based energy storage systems heavily rely on highly efficient ionic separations. However, artificial recreation of such a sophisticated biostructure has been technically challenging. Here, a highly tunable design concept is introduced to fabricate monovalent ion‐selective membranes with asymmetric sub‐nanometer pores in which energy barriers are implanted. The energy barriers act against ionic movements, which hold the target ion while facilitating the transport of competing ions. The membrane consists of bilayer metal‐organic frameworks (MOF‐on‐MOF), possessing a 6 to 3.4‐angstrom passable cavity structure. The ionic current measurements exhibit an unprecedented ionic current rectification ratio of above 100 with exceptionally high selectivity ratios of 84 and 80 for K+/Li+ and Na+/ Li+, respectively (1.14 Li+ mol m−2 h−1). Furthermore, using quantum mechanics/molecular mechanics, it is shown that the combined effect of spatial hindrance and nucleophilic entrapment to induce energy surge baffles is responsible for the membrane's ultrahigh selectivity and ion rectification. This work demonstrates a striking advance in developing monovalent ion‐selective channels and has implications in sensing, energy storage, and separation technologies.

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Post-transition metal/polymer composites for the separation and sensing of alkali metal ions

Abstract: The separation and sensing of alkali metal ions from aqueous lithium resources is of great importance for building future renewable and lithium-based energy storage technologies. As such, interest arises for...

Cited by 14 publications

References 57 publications

A liquid metal–polydopamine composite for cell culture and electro-stimulation

A liquid metal–polydopamine composite for cell culture and electro-stimulation

Emerging Role of Liquid Metals in Sensing

Designing Angstrom‐Scale Asymmetric MOF‐on‐MOF Cavities for High Monovalent Ion Selectivity

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