Highly vertical 3D bio-inspired hierarchical and multiscale superstructures on microcantilever for gas sensing of organophosphorous agents

Thomas, Guillaume; Keller, Valérie; Spitzer, Denis

doi:10.1016/j.apmt.2022.101667

Cited by 2 publications

(6 citation statements)

References 62 publications

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“…A recent study by Thomas et al drew inspiration from the structure of the male silkmoth, Bombyx mori, antenna to develop sensitive gas sensors capable of detecting dimethyl methyl phosphonate (DMMP), a standard simulant for the nerve agent sarin. [231,232] The male silkmoth has evolved a pair of highly effective antennas for detecting pheromones using hierarchical superstructures. [233,234] These antennas can detect as few as 200 molecules of bombykol, a type of pheromone, in one cubic meter of air over a distance of 10 kilometers.…”

Section: Bio-inspired Materials For Sensing Pollutantsmentioning

confidence: 99%

“…On the branches are olfactory sensilla, which house the olfactory receptor neurons. [233] To replicate this structure in a gas sensor, Thomas et al [231] created a microcantilever decorated with vertically aligned high aspect-ratio silicon micropillars as the antenna stalk. The micropillars were densely covered with titanium oxide (TiO 2 ) nanorods as the antenna branches.…”

Section: Bio-inspired Materials For Sensing Pollutantsmentioning

confidence: 99%

“…Further, they have developed a novel microcantilever‐based sensor for detecting DMMP. [ 231 ] This sensor has a highly vertical 3D bio‐inspired hierarchical structure that provides a surface area that is 490 times greater than a microcantilever with no nanostructures, making it extremely sensitive to the presence of DMMP ( Figure a,b).…”

Section: Bio‐inspired Functional Materials For Air Purificationmentioning

confidence: 99%

Section: Bio‐inspired Functional Materials For Air Purificationmentioning

confidence: 99%

“…b) Schematic demonstration of the multiscale 3D bio-inspired hierarchical Si-MPs@TiO 2 -NRs@FeO(OH)-NBs core-shell superstructures on a microcantilever where i) a Si pillar corresponds to an antenna stem, ii) TiO 2 NRs on Si-MPs correspond to antennal branches and iii) FeO(OH) NBs on Si-MPs@TiO 2 -NRs are associated to sensilla. Reproduced with permission [231]. Copyright 2022, Elsevier Ltd. c) Schematic of biological olfaction (left) and the electronic nose constructed by Persaud and Dodd.…”

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confidence: 99%

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Bio‐Inspired Functional Materials for Environmental Applications

Ede,

Yu,

Sung

et al. 2023

Small Methods

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With the global population expected to reach 9.7 billion by 2050, there is an urgent need for advanced materials that can address existing and developing environmental issues. Many current synthesis processes are environmentally unfriendly and often lack control over size, shape, and phase of resulting materials. Based on knowledge from biological synthesis and assembly processes, as well as their resulting functions (e.g., photosynthesis, self‐healing, anti‐fouling, etc.), researchers are now beginning to leverage these biological blueprints to advance bio‐inspired pathways for functional materials for water treatment, air purification and sensing. The result has been the development of novel materials that demonstrate enhanced performance and address sustainability. Here, an overview of the progress and potential of bio‐inspired methods toward functional materials for environmental applications is provided. The challenges and opportunities for this rapidly expanding field and aim to provide a valuable resource for researchers and engineers interested in developing sustainable and efficient processes and technologies is discussed.

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Section: Bio-inspired Materials For Sensing Pollutantsmentioning

confidence: 99%

Section: Bio-inspired Materials For Sensing Pollutantsmentioning

confidence: 99%

Section: Bio‐inspired Functional Materials For Air Purificationmentioning

confidence: 99%

Section: Bio‐inspired Functional Materials For Air Purificationmentioning

confidence: 99%

mentioning

confidence: 99%

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Bio‐Inspired Functional Materials for Environmental Applications

Ede,

Yu,

Sung

et al. 2023

Small Methods

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Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr)

Zhang

Tian

et al. 2023

Nanomaterials

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As a volatile air pollutant, formaldehyde can enter people’s living environment through interior decoration, furniture and paint, causing serious harm to human health. Therefore, it is necessary to develop a sensor for the real-time detection of formaldehyde in low concentrations. According to the chemical interaction between amino groups and formaldehyde, a MIL-101(Cr) aminated-material-based formaldehyde cantilever sensor was prepared, of which ethylenediamine- functionalized MIL-101(Cr) named ED-MIL-101(Cr)) showed the best gas sensing performance. Using quasi-in situ infrared spectroscopy, ED-MIL-101(Cr) was found bound to formaldehyde through a Schiff base. The adsorption enthalpy of formaldehyde-bound ED-MIL-101(Cr) was −52.6 kJ/mol, which corresponds to weak chemical adsorption, so the material showed good selectivity. In addition, ED-MIL-101(Cr) has the most active sites, so its response value to formaldehyde is larger and it takes longer to reach saturation adsorption than bare MIL-101(Cr). Through the research on the gas sensing performance of functionalized MIL-101(Cr) material, we found that it has a strong application potential in the field of formaldehyde monitoring, and the material performance can be quantitatively and accurately evaluated through combining calculation and experimentation for understanding the gas sensing mechanism.

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Highly vertical 3D bio-inspired hierarchical and multiscale superstructures on microcantilever for gas sensing of organophosphorous agents

Cited by 2 publications

References 62 publications

Bio‐Inspired Functional Materials for Environmental Applications

Bio‐Inspired Functional Materials for Environmental Applications

Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr)

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