Methane Detection with a Tungsten‐Calix[4]arene‐Based Conducting Polymer Embedded Sensor Array

Lu, Ru‐Qiang; Luo, Shao-Xiong Lennon; He, Qilin; Concellón, Alberto; Swager, Timothy M.

doi:10.1002/adfm.202007281

Cited by 11 publications

(13 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electrochemical polymerization of monomer units led to a conductive polymer that show a remarkable sensitivity to methane. [ 149 ] However, besides to this approach, cavitands have mostly been used with non‐conductive sensors.…”

Section: The Emergence Of Novel Materials For Ultrahigh Sensitivity A...mentioning

confidence: 99%

Advances in Materials and Technologies for Gas Sensing from Environmental and Food Monitoring to Breath Analysis

Milone

Monteduro

Rizzato

et al. 2022

Advanced Sustainable Systems

View full text Add to dashboard Cite

Figure 2. a) Pie chart illustrating the use of n-type and p-type metal oxides materials in gas sensing research (reproduced with permission. [23] Copyright 2014, Elsevier B.V.); b) schematics of a typical chemiresistors (e.g., based on WO 3 -films) (reproduced with permission. [55] Copyright 2007, IEEE); c) response of a solid-state impedance NO x gas sensor upon NO exposure (reproduced with permission. [56] Copyright 2003, Elsevier B.V.). d) Illustration of gas sensing through a mesoporous material with different analyte percolation ability (reproduced with permission. [24] Copyright 2013, Royal Society of Chemistry); e) grain size effect in n-type semiconducting metal oxide gas sensors (reproduced with permission under the term of CC-BY license. [57] Copyright 2012, the Authors, published by MDPI); f-h) crystalline ordered mesoporous WO 3 /Pt composites schematic and FESEM images (reproduced with permission. [47] Copyright 2018, Elsevier B.V.); i) typical response curves of In(III)-SnO 2 loaded cubic mesoporous graphitic carbon nitride sensor when exposed to toluene vapors at a working temperature of 200 °C; l,m) response to 50 ppm and 1 ppm toluene gas at 200 °C (reproduced with permission. [53] Copyright 2018, Elsevier B.V.).

show abstract

Section: The Emergence Of Novel Materials For Ultrahigh Sensitivity A...mentioning

confidence: 99%

Advances in Materials and Technologies for Gas Sensing from Environmental and Food Monitoring to Breath Analysis

Milone

Monteduro

Rizzato

et al. 2022

Advanced Sustainable Systems

View full text Add to dashboard Cite

show abstract

“…Other than MOX, Swager's group is advancing CP based chemical sensor, [ 45 ] and the leading start‐ups such as AerNos Inc. and Stratuscent Inc. are also respectively, working on their patented MEMS based CNT, [ 46 ] and Nanoparticles crafted carbon black (CB) based CP sensing technologies. [ 47 ] Nonetheless, chemiresistors based on MOX still suffers from high operating temperature and low power‐efficiency; whereas CP have limited life‐span and are sensitive to humidity and temperature; and CNTs are hindered by their long recovery time and more complex fabrication process.…”

Section: Types Of Solid‐state Vocs Sensormentioning

confidence: 99%

Volatile Organic Compound Sensors Based on 2D Materials

Tan

Ang

2021

Adv Elect Materials

View full text Add to dashboard Cite

Due to their unique chemical and physical properties, 2D inorganic materials (2DMs) have attracted a lot of attention in recent years as an attractive platform for diverse applications in opto‐electronics, energy generation and storage, and sensing. This article presents the progress being made in sensors designed for measuring volatile organic compounds (VOCs) in ambient air. It considers commercially available sensors, such as the amperometric and conductometric types, and the recent advancements in VOCs sensors employing 2DMs and their nanocomposites. Their performance is summarized in a graphical form and the challenges and possible mitigation methods for these types of VOC sensor are highlighted.

show abstract

“…Specifically, two-dimensional (2D) semiconductor gas sensors have attracted strong interest and are widely employed in hazardous leakage alert, environmental monitoring, − and personal diagnostics/healthcare. ,, Typical 2D materials such as graphene, transition metal dichalcogenides (TMDCs), black phosphorene (BP), and conductive metal organic frameworks (MOFs) ,− have proven to be attractive in high-performance chemiresistors due to their remarkable physical (electronic) properties and 2D dimensionality, − including high surface-to-volume ratio, high charge carrier mobility, low Joule noise, and ultrahigh sensitivity. , The main drawback of 2D material-based chemical sensors is their poor selectivity and strong surface binding (presumably on the defect sites) that leads to incomplete/slow recovery . These issues call for general and effective functional motifs that can serve as a highly efficient recognition center to accompany the unique 2D transduction.…”

mentioning

confidence: 99%

Single-Atom Tailoring of Two-Dimensional Atomic Crystals Enables Highly Efficient Detection and Pattern Recognition of Chemical Vapors

et al. 2022

View full text Add to dashboard Cite

Low-dimensional semiconductor materials, such as single-walled carbon nanotubes, two-dimensional (2D) atomic crystals, and organic frameworks, have been widely adapted as ideal platforms to construct various chemo/biosensors with satisfying sensitivity. However, the general drawbacks in chemiresistive devices, including high operation temperatures, low response to low-polarity molecules, and poor selectivity, have limited their realworld applications. In this study, 2D materials (graphene, MoS 2 , and WSe 2 ) were systematically functionalized with series of monodispersed single atomic sites (Pt, Co, and Ru) through a facile approach to construct single-atom sensors (SASs) for the detection of VOCs at room temperature. The structural and catalytic characteristics of SAs successfully translated into enhanced gas-sensing performance, with a 1−2 orders of magnitude increase in relative response to ethanol (@5 ppm) and acetone (@20 ppm) vapors (in all M-2D SASs as compared to pristine substrates), high selectivity to VOCs against relative humidity (M-WSe 2 SASs), and fast response/recovery time (11/58 s for Pt-Graphene and 22/48 s for Pt-MoS 2 to 50 ppm ethanol, 9/57 s for Pt-Graphene and 15/75 s for Pt-MoS 2 to 200 ppm acetone) that are several times faster than the pristine 2D materials. Density functional theory (DFT) calculations revealed the signaling mechanism in SASs, and the data were further trained to build machine learning (ML) models for predicting the adsorption energies and sensing performance using the features of adsorption heights, metal charge, and charge transfer between the adsorbed VOCs and SASs sites. Finally, the rich combination of the metal single atoms and 2D atomic crystal supports were converted to cross-sensitive SA sensor array that allows for detection and identification of different VOCs.

show abstract

Methane Detection with a Tungsten‐Calix[4]arene‐Based Conducting Polymer Embedded Sensor Array

Cited by 11 publications

References 55 publications

Advances in Materials and Technologies for Gas Sensing from Environmental and Food Monitoring to Breath Analysis

Advances in Materials and Technologies for Gas Sensing from Environmental and Food Monitoring to Breath Analysis

Volatile Organic Compound Sensors Based on 2D Materials

Single-Atom Tailoring of Two-Dimensional Atomic Crystals Enables Highly Efficient Detection and Pattern Recognition of Chemical Vapors

Contact Info

Product

Resources

About