Doped nafion-layered double hydroxide nanoparticles as a modified ionic polymer metal composite sheet for a high-responsive humidity sensor

Beigi, Fahimeh; Mousavi, Maryam; Manteghi, Faranak; Kolahdouz, Mohammadreza

doi:10.1016/j.clay.2018.09.006

Cited by 23 publications

(20 citation statements)

References 31 publications

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“…Although IPMC has the advantages of a low driving voltage, large displacement deformation, rapid response, and being light weight, it has a very broad application prospect as a new type of electric driving material. However, according to the current research results at home and abroad, the existing IPMC still needs to overcome many technical difficulties, such as small output force, short non-water working time, and instability during long-term use [ 62 , 63 , 64 ]. Therefore, many researchers have studied the modification of IPMC to solve the limitations in its application.…”

Section: Preparation Technology Of Ipmcmentioning

confidence: 99%

Preparation and Modification Technology Analysis of Ionic Polymer-Metal Composites (IPMCs)

et al. 2022

IJMS

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As a new type of flexible smart material, ionic polymer-metal composite (IPMC) has the advantages of being lightweight and having fast responses, good flexibility, and large deformation ranges. However, IPMC has the disadvantages of a small driving force and short lifespan. Based on this, this paper firstly analyzes the driving mechanism of IPMC. Then, it focuses on the current preparation technology of IPMC from the aspects of electroless plating and mechanical plating. The advantages and disadvantages of various preparation methods are analyzed. Due to the special driving mechanism of IPMC, there is a problem of short non-aqueous working time. Therefore, the modification research of IPMC is reviewed from the aspects of the basement membrane, working medium, and electrode materials. Finally, the current challenges and future development prospects of IPMC are discussed.

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Section: Preparation Technology Of Ipmcmentioning

confidence: 99%

Preparation and Modification Technology Analysis of Ionic Polymer-Metal Composites (IPMCs)

et al. 2022

IJMS

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“…The use of LDH was also demonstrated to drastically improve the performance of composite materials for sensors. For example, Beigi et al [137] reported on a modified ionic polymer metal composite (IPCM) humidity-sensor based on a nafion polymeric matrix doped with CoAl-LDH nanoparticles, with a significant improvement of sensitivity and responsivity due to the intrinsic hydrophilic characteristic of LDH. Another fundamental element in the fabrication of sensor systems is represented by the energy storage units.…”

Section: Nanogenerators and Physical Sensorsmentioning

confidence: 99%

Layered Double Hydroxides in Bioinspired Nanotechnology

et al. 2020

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Layered Double Hydroxides (LDHs) are a relevant class of inorganic lamellar nanomaterials that have attracted significant interest in life science-related applications, due to their highly controllable synthesis and high biocompatibility. Under a general point of view, this class of materials might have played an important role for the origin of life on planet Earth, given their ability to adsorb and concentrate life-relevant molecules in sea environments. It has been speculated that the organic–mineral interactions could have permitted to organize the adsorbed molecules, leading to an increase in their local concentration and finally to the emergence of life. Inspired by nature, material scientists, engineers and chemists have started to leverage the ability of LDHs to absorb and concentrate molecules and biomolecules within life-like compartments, allowing to realize highly-efficient bioinspired platforms, usable for bioanalysis, therapeutics, sensors and bioremediation. This review aims at summarizing the latest evolution of LDHs in this research field under an unprecedented perspective, finally providing possible challenges and directions for future research.

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“…24,25 LDHs have shown good ionic conductivities because their hydroxide host layers can conduct hydroxyl ions (OH − ) via the Grotthuss mechanism. 26 Therefore, functionalized or anion-exchanged LDHs, such as CoAl-LDH 27 and ZnAl-LDH, 28 have recently been applied in humidity sensing. However, the performances of LDH-based humidity sensors in terms of sensitivity and response linearity require further improvement.…”

Section: Introductionmentioning

confidence: 99%

Partial Exchange between Inorganic and Organic Anions in MgAl Layered Double Hydroxide Nanosheets for Humidity Sensing

Chen

Wang

et al. 2022

ACS Appl. Nano Mater.

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Layered double hydroxides (LDHs) are a class of layered materials that show intercalant-dependent properties. Precise control over the type and concentration of intercalants in LDHs is important to tailor their properties and functions. Herein, through an anion exchange process, we partially replaced the NO3 2– ions in MgAl-LDH nanosheets with terephthalic acid (BDC) ions and systematically studied their ionic conduction and humidity sensing properties at different NO3 2–/BDC ratios. Our results show that moderate BDC intercalation boosted the humid sensing response to 3 orders of magnitude compared to the original MgAl-LDH intercalated with NO3 2– ions. This is because the BDC molecules could help improve the hydrophilicity of the LDH and thus the ability to absorb water molecules. However, too high a BDC concentration resulted in a considerable reduction in the ionic conduction of the LDH because this might block ionic conductive paths. As a demonstration, the MgAl-LDH-NO3 2–-BDC hybrid was fabricated into a flexible humidity sensor, which showed potential as a wearable breath sensor.

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Doped nafion-layered double hydroxide nanoparticles as a modified ionic polymer metal composite sheet for a high-responsive humidity sensor

Cited by 23 publications

References 31 publications

Preparation and Modification Technology Analysis of Ionic Polymer-Metal Composites (IPMCs)

Preparation and Modification Technology Analysis of Ionic Polymer-Metal Composites (IPMCs)

Layered Double Hydroxides in Bioinspired Nanotechnology

Partial Exchange between Inorganic and Organic Anions in MgAl Layered Double Hydroxide Nanosheets for Humidity Sensing

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