MOFs-derived porous nanomaterials for gas sensing

Wang, Xiaofeng; Song, Xue‐Zhi; Sun, Kai‐Ming; Li, Cheng; Ma, Wei

doi:10.1016/j.poly.2018.06.037

Cited by 75 publications

(34 citation statements)

References 82 publications

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“…71 and gas sensors. 77 Since MOF-derived metal oxides manifest mass productivity, high porosity, large surface areas, controllable compositions, and tunable pore sizes, they can be considered as one of the most promising gas-sensing materials. Lu et al 78 first reported MOF-templated metal oxides for chemiresistive sensors.…”

Section: Mof Derivatives For Chemiresistive Sensors Carbon Compositesmentioning

confidence: 99%

Metal-Organic Frameworks for Chemiresistive Sensors

Koo

Jang

Kim

2019

Chem

515

335

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Highly sensitive and selective chemical sensors are needed for use in a wide range of applications such as environmental toxic gas monitoring, disease diagnosis, and food quality control. Although some chemiresistive sensors have been commercialized, grand challenges still remain: ppb-level sensitivity, accurate cross-selectivity, and long-term stability. Metal-organic frameworks (MOFs) with record-breaking surface areas and ultrahigh porosity are ideal sensing materials because chemical sensors rely highly on surface reactions. In addition, MOFs can be used as a membrane to utilize their unique gas adsorption and separation characteristics. Furthermore, the use of MOFs as precursors to enable facile production of various nanostructures is further combined with other functional materials. Based on these fascinating features of MOFs, there have been great efforts to elucidate reaction mechanisms and address limitations in MOF-based chemiresistors. In this review, we present a comprehensive overview and recent progress in chemiresistive sensors developed by using pure MOFs, MOF membranes, and MOF derivatives.

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Section: Mof Derivatives For Chemiresistive Sensors Carbon Compositesmentioning

confidence: 99%

Metal-Organic Frameworks for Chemiresistive Sensors

Koo

Jang

Kim

2019

Chem

515

335

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“…ln q e ¼ (1/n)ln C e + ln K F (9) where n and K F are the Freundlich isotherm exponents. K F describes the adsorption or distribution coefficient giving an indication of the denite quantity of the adsorbed molecule on an adsorbent surface at equilibrium while n indicates the favorability of the adsorption isotherm and measure the surface heterogeneity or adsorption intensity.…”

Section: Adsorption Of Pb(ii) Cd(ii) and Cu(ii) Ions By Mg Fe And Fmentioning

confidence: 99%

Facile fabrication of bimetallic Fe–Mg MOF for the synthesis of xanthenes and removal of heavy metal ions

et al. 2020

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“…Metal organic frameworks (MOFs) are porous functional materials composed of metal ions with strong bonds and organic ligands [ 142 ]. Pyrolysis or calcination is used to convert these precursor structures into diverse metal oxide sensor nanostructures and nanocomposites [ 143 ].…”

Section: Semiconductor Sensing Materialsmentioning

confidence: 99%

Semiconductor Gas Sensors: Materials, Technology, Design, and Application

Nikolić

Milovanović

Vasiljević

et al. 2020

Sensors

352

134

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This paper presents an overview of semiconductor materials used in gas sensors, their technology, design, and application. Semiconductor materials include metal oxides, conducting polymers, carbon nanotubes, and 2D materials. Metal oxides are most often the first choice due to their ease of fabrication, low cost, high sensitivity, and stability. Some of their disadvantages are low selectivity and high operating temperature. Conducting polymers have the advantage of a low operating temperature and can detect many organic vapors. They are flexible but affected by humidity. Carbon nanotubes are chemically and mechanically stable and are sensitive towards NO and NH3, but need dopants or modifications to sense other gases. Graphene, transition metal chalcogenides, boron nitride, transition metal carbides/nitrides, metal organic frameworks, and metal oxide nanosheets as 2D materials represent gas-sensing materials of the future, especially in medical devices, such as breath sensing. This overview covers the most used semiconducting materials in gas sensing, their synthesis methods and morphology, especially oxide nanostructures, heterostructures, and 2D materials, as well as sensor technology and design, application in advance electronic circuits and systems, and research challenges from the perspective of emerging technologies.

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MOFs-derived porous nanomaterials for gas sensing

Cited by 75 publications

References 82 publications

Metal-Organic Frameworks for Chemiresistive Sensors

Metal-Organic Frameworks for Chemiresistive Sensors

Facile fabrication of bimetallic Fe–Mg MOF for the synthesis of xanthenes and removal of heavy metal ions

Semiconductor Gas Sensors: Materials, Technology, Design, and Application

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