2019
DOI: 10.1016/j.matt.2019.07.004
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Janus Mesoporous Sensor Devices for Simultaneous Multivariable Gases Detection

Abstract: We have demonstrated a Janus mesoporous sensor device that enables detection of multiple gases simultaneously. The asymmetric Janus mesoporous devices have exhibited distinct ultrafast response time, great selectivity, as well as ultralow limit of detection for NH 3 and H 2 S sensing at room temperature. Each gas also can be quantified individually by using the different response time. Such Janus architecture could pave a new way for designing integrated systems in multiple chemical sensing.

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Cited by 49 publications
(44 citation statements)
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References 40 publications
(39 reference statements)
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“…For O 1 s (Figure S6f), three peaks are assigned to 532.4 eV, 533.2 eV and 533.8 eV for the binding energy of O−C=O, −OH and C−O−C=O bond, respectively [23] . From the analysis of XPS, it is evident that the ‐COOH were formed on the surface of mesoporous carbon because of the oxidation of resol‐based phenolic resins during pyrolysis, [24] which leads to higher surface charge and pH‐sensitive performance. The result of Fourier Transform Infrared (FT‐IR, Figure S8) is consistent with the XPS analysis, indicating the MCS nanocomposite membranes have “reinforced concrete”‐structured frameworks.…”
Section: Resultsmentioning
confidence: 98%
“…For O 1 s (Figure S6f), three peaks are assigned to 532.4 eV, 533.2 eV and 533.8 eV for the binding energy of O−C=O, −OH and C−O−C=O bond, respectively [23] . From the analysis of XPS, it is evident that the ‐COOH were formed on the surface of mesoporous carbon because of the oxidation of resol‐based phenolic resins during pyrolysis, [24] which leads to higher surface charge and pH‐sensitive performance. The result of Fourier Transform Infrared (FT‐IR, Figure S8) is consistent with the XPS analysis, indicating the MCS nanocomposite membranes have “reinforced concrete”‐structured frameworks.…”
Section: Resultsmentioning
confidence: 98%
“…[22] ForO1s (Figure S6f), three peaks are assigned to 532.4 eV,533.2 eV and 533.8 eV for the binding energy of OÀ C=O, ÀOH and CÀOÀC=Ob ond, respectively. [23] From the analysis of XPS,itisevident that the -COOH were formed on the surface of mesoporous carbon because of the oxidation of resol-based phenolic resins during pyrolysis, [24] which leads to higher surface charge and pH-sensitive performance.T he result of Fourier Transform Infrared (FT-IR, Figure S8) is consistent with the XPS analysis,i ndicating the MCS nanocomposite membranes have "reinforced concrete"-structured frameworks.T his special structure and super-assembly interaction can improve thermal stability,c hemical conductivity, and mechanical properties of membrane. [25] Thee xisting of hydrophobic region originating from polymer endows MCS/ AAOw ith special temperature-dependent ion transport.…”
Section: Methodsmentioning
confidence: 99%
“…Because of large pore sizes, high surface areas, and tunable architectures, [ 17–19 ] mesoporous materials have been demonstrated promising performances in a wide range of applications, [ 20–28 ] such as, catalysis, energy storage, biomedicines, superconductors, and sensing. Specifically, mesoporous materials are ideal supports for functional nanoparticles.…”
Section: Introductionmentioning
confidence: 99%