MOF-derived hierarchical hollow ZnO nanocages with enhanced low-concentration VOCs gas-sensing performance

Li, Wenhui; Wu, Xiaofeng; Han, Ning; Chen, Jiayuan; Qian, Xihui; Deng, Yangbo; Tang, Wenxiang; Chen, Yunfa

doi:10.1016/j.snb.2015.11.034

Cited by 198 publications

(91 citation statements)

References 53 publications

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“…The gas sensor performances were tested in a dynamic flow system, similar to our previous reports . Typically, the prepared samples were dispersed with ethanol using ultrasound, then were coated on ceramic chip (1 ×2 cm 2 , and previously attached with a pair of Ag electrodes) to form a film.…”

Section: Methodsmentioning

confidence: 99%

Enhanced NO₂ Sensing Property of ZnO by Ga Doping and H₂ Activation

Zhou

Xie

Bian

et al. 2018

Physica Status Solidi (a)

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Ga‐doped ZnO nanoparticles are successfully prepared by a facile coprecipitation method and then are activated by H2 annealing. The as‐prepared ZnO powders are characterized by X‐ray diffractometer (XRD), Brunauer–Emmett–Teller (BET), high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), X‐ray photoelectron spectroscopy, Raman and photoluminescence spectroscopies. Gas sensing property using NO2 as probe shows that the 1 at.% Ga‐ZnO powders activated in H2 at 540 °C showed high NO2 response of ≈50/ppm, high selectivity toward typical interferences such as ethanol, acetone, toluene, NO, SO2, C2H6, and C2H4 and high stability as measured at 200 °C. On the contrary, the pure ZnO and the Ga‐ZnO without H2 activation show far lower response, which illustrates the effect of Ga dopant activation by H2 annealing aimed for the high performance gas sensing materials.

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Section: Methodsmentioning

confidence: 99%

Enhanced NO₂ Sensing Property of ZnO by Ga Doping and H₂ Activation

Zhou

Xie

Bian

et al. 2018

Physica Status Solidi (a)

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“…[61] Meist sind dies Zeolith-Imidazolat-Gerüste (ZIF). [10,27,61,63] Auch Metalloxid-Nanocontainer werden normalerweise nicht fürd en Einschluss von Signalmolekülen verwendet;s tattdessen werden ¾nderungen in den Nanocontainerwiderständen fürd ie Signalerzeugung genutzt. Die endgültigen Strukturen werden durch Te mpern bei 450 8 8Cg eformt.…”

Section: Metalloxid-nanocontainerunclassified

“…Ein paar wenige Beispiele kçnnen aber auch fürN anocontainer aus mesoporçsem Siliciumoxid, Polymeren und Lipiden gefunden werden. Oxidierende und reduzierende Gase wie Aceton und Benzol kçnnen einfach mithilfe von Metalloxid-Nanocontainern detektiert werden, [10] die häufig Halbleitereigenschaften auf-weisen. Das Prinzip der Gassensoren beruht auf der Adsorption und Oxidation von Sauerstoff an der Nanocontainer-Oberfläche (Abbildung 6 [11] Kosaki et al beschrieben die Synthese von Kohlenstoffnanokäfigen mit mesoporçsem Siliciumoxid als Te mplat.…”

Section: Chemosensorenunclassified

Nanocontainer in der Analytik

2019

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Nanocontainer, wie mesoporöse Siliciumoxidpartikel und Polymersomen, sind vielseitige Strukturen, die Löcher oder Poren enthalten, die für den Einschluss von niedermolekularen Verbindungen und für die Einführung spezifischer Funktionalitäten verwendet werden. Sie finden weitreichende Anwendungen in Wirkstofftransportsystemen, in der Biomedizin, in Bioreaktoren und in der Analytik. Im letzten Fall fungieren die Nanocontainer normalerweise als Signalverstärker. Dafür werden sie so synthetisiert, dass sie Signalmoleküle einschließen und funktionelle Gruppen an ihrer Oberfläche tragen. Diese ermöglichen wiederum die spezifische Erkennung von Analyten und kontrollieren die Durchlässigkeit der Nanocontainerporen. Dieser Aufsatz gibt einen Überblick über die wichtigsten Nanocontainermaterialien und diskutiert deren Herstellung, die Oberflächenchemie und ‐modifizierungen sowie Strategien für den Einschluss von Molekülen. Außerdem werden die Vorteile, Herausforderungen und Grenzen in Bezug auf andere gängige Signalverstärkungsstrategien für verschiedene Assayformate und Detektionsmethoden in (bio)analytischen Anwendungen kritisch betrachtet.

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“…For instance, Co 3 O 4 nanocubes converted from Co‐based ZIF‐67 showed fast response and recovery toward ethanol sensing attributed to their morphological anisotropy, large surface area, and plethora of catalytic active sites . Various NMOF‐derived materials employed for gas sensing applications have been reported …”

Section: Applications Of Nmof‐derived Inorganic Hybrid Nanomaterialsmentioning

confidence: 99%

Nano Metal‐Organic Framework‐Derived Inorganic Hybrid Nanomaterials: Synthetic Strategies and Applications

Duy

Rafiq

Yoo

2017

Chemistry A European J

111

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Nano- (or micro-scale) metal-organic frameworks (NMOFs), also known as coordination polymer particles (CPPs), have received much attention because of their structural diversities and tunable properties. Besides the direct use, NMOFs can be alternatively used as sacrificial templates/precursors for the preparation of a wide range of hybrid inorganic nanomaterials in straightforward and controllable manners. Distinct advantages of using NMOF templates are correlated to their structural and functional tailorability at molecular levels that is rarely acquired in any other conventional template/precursor. In addition, NMOF-derived inorganic nanomaterials with distinct chemical and physical properties are inferred to dramatically expand the scope of their utilization in many fields. In this review, we aim to provide readers with a comprehensive summary of recent progress in terms of synthetic approaches for the production of diverse inorganic hybrid nanostructures from as-synthesized NMOFs and their promising applications.

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MOF-derived hierarchical hollow ZnO nanocages with enhanced low-concentration VOCs gas-sensing performance

Cited by 198 publications

References 53 publications

Enhanced NO₂ Sensing Property of ZnO by Ga Doping and H₂ Activation

Enhanced NO₂ Sensing Property of ZnO by Ga Doping and H₂ Activation

Nanocontainer in der Analytik

Nano Metal‐Organic Framework‐Derived Inorganic Hybrid Nanomaterials: Synthetic Strategies and Applications

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MOF-derived hierarchical hollow ZnO nanocages with enhanced low-concentration VOCs gas-sensing performance

Cited by 198 publications

References 53 publications

Enhanced NO2 Sensing Property of ZnO by Ga Doping and H2 Activation

Enhanced NO2 Sensing Property of ZnO by Ga Doping and H2 Activation

Nanocontainer in der Analytik

Nano Metal‐Organic Framework‐Derived Inorganic Hybrid Nanomaterials: Synthetic Strategies and Applications

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Enhanced NO₂ Sensing Property of ZnO by Ga Doping and H₂ Activation

Enhanced NO₂ Sensing Property of ZnO by Ga Doping and H₂ Activation