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gas sensors based on metal-organic frameworks:Challenges and opportunities

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Two-dimensional transition metal MXene-based gas sensors:A review

结构化学 2024年第3期43卷 67-73页

作者： Xiaoyan Peng Xuanhao Wu Fan Yang Yefei Tian Mingming Zhang Hongye Yuan State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft MatterSchool of Materials Science and EngineeringXi'an Jiaotong UniversityXi'an710049PR China School of Materials Science and Engineering Changan UniversityNo.75 ChanganMiddle RoadXi'an710064PR China

The need for high-performance and cost-effective gas sensors in industrial and domestic settings has led to ad-vancements in gas sensors based on metal-organic frameworks(MOFs).However,challenges remain in the design and synthesis of MOFs with customized structure and affinity toward targeted gases and their integration onto miniaturized electronic *** deliberate design of MOFs with desired characteristics is hindered by limited understanding of the interactions between MOFs and ***,there is a lack of customization of relevant MOF-based sensors with salient sensing performance and their integration into sensor arrays to align with different application *** combination of machine learning or artificial intelligence(AI)with gas sensors also represents a promising avenue for future ***,we provide a mini-review of recent ac-complishments in MOF-based gas sensors,covering materials design and device *** challenges of miniaturization and building smart sensing systems with anomaly detection,self-calibration,and lifetime pre-diction are also discussed.

关键词： MOFs gas sensors Integration approach Sensing performance

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Chinese Chemical Letters 2024年第1期35卷 208-221页

作者： Junfeng Li Xiaojie Chen Xiaojie Zhu Yingchang Jiang Xueting Chang Shibin Sun College of Logistics and Engineering Shanghai Maritime UniversityShanghai 201306China Institute of Marine Materials Science and Engineering Shanghai Maritime UniversityShanghai 201306China

As an emerging star in the family of two-dimensional(2D)materials,2D transition metal carbides,carbonitrides and nitrides,collectively referred to as MXenes,have large specific surface area,rich active sites,metallic conductivity and adjustable surface chemical *** features make MXenes promising candidates for gas-sensing *** the past few years,MXene-based sensors have drawn increasing attention due to their enhanced sensor *** on this,this review systematically represents the structure,synthesis methods and properties of MXenes,and summarizes their applications in gas ***,the types,structure,main synthesis methods and properties of MXenes are introduced in a comprehensive ***,the corresponding design principle and working mechanism of MXene-based gas sensor are ***,the sensing performances of pristine MXenes and the MXene-based nanocomposite are ***,some future opportunities and challenges of MXene-based sensors are pointed out.

关键词： MXene gas sensors Synthesis Stability gas-sensing mechanism gas-sensing performance

Strategies and challenges for enhancing performance of MXene-based gas sensors:a review

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Rare Metals 2022年第12期41卷 3976-3999页

作者： Hai-Feng Zhang Jing-Yue Xuan Qi Zhang Mei-Ling Sun Fu-Chao Jia Xiao-Mei Wang Guang-Chao Yin Si-Yu Lu School of Physics and Optoelectronic Engineering Shandong University of TechnologyZibo 255000China Green Catalysis Center College of ChemistryZhengzhou UniversityZhengzhou 450001China

With the advantages of metal conductivity,large specific surface area,and rich surface functional groups,two-dimensional(2D)MXenes have shown great potential in the field of gas ***,gas sensors fabricated with pristine MXenes generally suffer from several problems such as low sensitivity,poor selectivity,significant baseresistance drift,and poor environment ***,many efforts have been devoted to overcoming these *** this review,we review the progress on MXenebased gas sensors and summarize several efficient strategies(including structural design,surface modification,inorganic Schottky j unction/heterojunction sensitization,polymer addition,and metal-ion intercalation)to promote the gassensing *** addition,the major challenges and future development directions of MXene-based gas sensors are also outlined in the present review.

关键词： MXenes gas sensors Strategies gas-sensing performance

Interconnected graphene scaffolds for functional gas sensors with tunable sensitivity

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Journal of Materials Science & Technology 2020年第23期58卷 16-23页

作者： Xiao You Jinshan Yang Mengmeng Wang Hongda Wang Le Gao Shaoming Dong State Key Laboratory of High Performance Ceramics&Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China Structural Ceramics and Composites Engineering Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China University of Chinese Academy of Sciences Beijing100039China

In this work,the interconnected graphene scaffolds are prepared by three-dimensional(3 D)printing for multifunctional gas detection with tunable *** scaffolds with regularly aligned graphene conductive networks exhibit significant mechanical strength and high electrical stability to multi-direction deformation,which can be attributed to the typical core-shell structure of graphene and *** resistance of the free-standing scaffolds can realize the real-time response to H_(2) O and NO_(2),and the relative resistance change to 100 ppm H_(2) O and 100 ppm NO_(2) can reach 2%and 2.5%,*** charge doping of the oxidizing gases is considered to be the main reason for various response sensitivities of the scaffolds with different orthogonal layers,in which the interconnected conductive network can generate a large specific surface area and significantly improving the adsorption of the target gases and the transfer of *** controllable fabrication of regular structure has appropriately great potential for further optimizations and applications in gas detection.

关键词： Graphene scaffolds Interconnected network 3D printing gas sensors Multifunctional gas detection

ZnO Nanoparticles as Ethanol gas sensors and the Effective Parameters on Their Performance

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Journal of Materials Science & Technology 2013年第5期29卷 393-400页

作者： Asieh Sadat Kazemi Reza Afzalzadeh Mohamadreza Abadyan Bojnourd Branch Islamic Azad UniversityBojnourdIran School of Physics Khajeh Nasir Toosi University of TechnologyTehranIran Shahrekord Branch Islamic Azad UniversityShahrekordIran

ZnO nanoparticles are synthesized and applied as ethanol gas sensors. In some cases, the sensitivity and response time of these particles are shown to be higher than that has been reported in the literature. It has been investigated that the most possible reason for this higher gas sensing performance can be attributed to the quantity of the activity coefficient of its initial components. However, other effects such as pH and thermal decomposition are of importance as well. Specific ion interaction （SIT） model is applied to derive the mean activity coefficient values of the additives used in synthesis of ZnO nanoparticles.

关键词： ZnO nanoparticles gas sensors Activity coefficient pH Thermal decomposition

Metal Oxide Nanocrystals Multi-Parametric gas sensors

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稀有金属材料与工程 2006年第A3期35卷 17-20页

作者： E.Comini C.Baratto M.Ferroni G.Faglia G.Sberveglieri Sensor CNR-INFMBrescia UniversityVia Valotti 925133 BresciaItaly

Interest in nanowires of semiconducting oxides is exponentially grown in the last years,due to their attracting potential applications in electronic,optical and sensor *** have focused our attention on the sensing properties of indium and zinc oxide *** have studied the influence of the deposition conditions on the nanostructures morphology and sensing *** report on the growth of ZnO and In_2O_3 nanostructures on silicon and alumina substrates,using vapour phase *** have synthesized,depending on the growth conditions,different structures such as nano-wires, tetrapod,nano-comb,nano-necklace,nano-pencil ZnO/In_2O_3 without using any metal catalyst.

关键词： indium oxide zin oxide gas sensors photoluminescence nanowires

β-Ga_(2)O_(3) nanowires and thin films for metal oxide semiconductor gas sensors:Sensing mechanisms and performance enhancement strategies

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Journal of Materiomics 2019年第4期5卷 542-557页

作者： Adeel Afzal Dipartimento di Chimica Universita degli Studi di Bari“Aldo Moro”Via Orabona 470126BariItaly Department of Chemistry College of ScienceUniversity of Hafr Al BatinPO Box 1803Hafr Al Batin39524Saudi Arabia

The reliable,selective,and fast detection of the inorganic and organic gases in indoor and outdoor air and industrial processes is a huge challenge for environmental sustainability,healthier life,and disease control and *** oxides have been frequently explored as highly sensitive receptor elements in the electronic gas sensors since the *** oxide(Ga_(2)O_(3)),often recognized as one of the widest-bandgap semiconductors,has shown tremendous potential as the inorganic gas receptor because of its extraordinary chemical and thermal stability,and excellent electronic *** article presents a comprehensive reference on the electrical properties,historical developments,detection mechanisms,and gas sensing performance of Ga_(2)O_(3) nanowires and composite *** particular,the relationships between composition,nanostructure,and gas sensing properties of galliumcontaining oxidic nanomaterials such as β-Ga_(2)O_(3) nanowires,surface-modified Ga_(2)O_(3),metal-doped Ga_(2)O_(3) or Ga-doped metal oxides,and Ga_(2)O_(3)/metal oxide composite heterostructures are *** applications of Ga_(2)O_(3) gas sensors are discussed with an emphasis on their practical limitations such as high-temperature operation,power consumption,and miniaturization ***,future research directions and potential developments are suggested.

关键词： β-Ga_(2)O_(3)nanowires gas sensors Nanomaterials Semiconductors Sensing mechanisms Thin films

Hydrogen gas sensors Based on Electrostatically Spray Deposited Nickel Oxide Thin Film Structures

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Photonic sensors 2015年第3期5卷 235-240页

作者： Raied K. JAMAL Kadhim A. AADIM Qahtan G. AL-ZAIDI Iman N. TAABAN Department of Physics College of Science University of Baghdad Baghdad lraq

A simple, low-cost, and home-built electrostatic spray deposition （ESD） system with the stable cone-jet mode was used to deposit nickel oxide （NiO） thin films on glass substrates kept at temperature of 400 ℃ as the primary precursor solution of 0.1 M concentration hydrated nickel chloride was dissolved in isopropyl alcohol. Electrical measurements showed that these films were of n-type conductivity while their resistance response to hydrogen flow in air ambient was varied by 2.81% with the rise and recovery time of 48 s and 40 s, respectively.

关键词： gas sensors electrostatic spray deposition nickel oxide thin films

Atomic layer deposition to heterostructures for application in gas sensors

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International Journal of Extreme Manufacturing 2023年第2期5卷 171-188页

作者： Hongyin Pan Lihao Zhou Wei Zheng Xianghong Liu Jun Zhang Nicola Pinna College of Physics Qingdao UniversityQingdao 266071People’s Republic of China Institut für Chemie and IRIS Adlershof Humboldt-Universität zu BerlinBrook-Taylor-Str.212489 BerlinGermany

Atomic layer deposition(ALD) is a versatile technique to deposit metals and metal oxide sensing materials at the atomic scale to achieve improved sensor functions. This article reviews metals and metal oxide semiconductor(MOS) heterostructures for gas sensing applications in which at least one of the preparation steps is carried out by ALD. In particular, three types of MOS-based heterostructures synthesized by ALD are discussed, including ALD of metal catalysts on MOS, ALD of metal oxides on MOS and MOS core–shell(C–S) *** gas sensing performances of these heterostructures are carefully analyzed and ***, the further developments required and the challenges faced by ALD for the synthesis of MOS gas sensing materials are discussed.

关键词： atomic layer deposition metal oxides heterostructures gas sensors