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Metal oxide-based gas sensor research: How to?
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TLDR
In this article, the state of the art in the field of experimental techniques possible to be applied to the study of conductometric gas sensors based on semiconducting metal oxides is reviewed.Abstract:
The paper critically reviews the state of the art in the field of experimental techniques possible to be applied to the study of conductometric gas sensors based on semiconducting metal oxides. The used assessment criteria are subordinated to the proposed R&D approach, which focuses on the study, and subsequent modelling, of sensors’ performance in realistic operation conditions by means of a combination of phenomenological and spectroscopic techniques. With this viewpoint, the paper presents both the to-date achievements and shortcomings of different experimental techniques, describes – by using selected examples – how the proposed approach can be used and proposes a set of objectives for the near future.read more
Citations
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An Au clusters related spill-over sensitization mechanism in SnO2-based gas sensors identified by operando HERFD-XAS, work function changes, DC resistance and catalytic conversion studies.
TL;DR: The role of Au additives in SnO(2)-based thick film gas sensors was investigated by a combination of operando investigation techniques, namely spectroscopic high energy resolved fluorescence detected X-ray absorption spectroscopy (HERFD-XAS) and simultaneous DC resistance and work function change measurements.
Journal ArticleDOI
Improved H2 sensing properties of Co-doped SnO2 nanofibers
TL;DR: In this paper, Co-doped SnO2 nanofibers are synthesized via an electrospinning method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscope (TEM).
Journal ArticleDOI
ZnS Nanostructures: Synthesis, Properties, and Applications
TL;DR: Zinc sulfide (ZnS) nanostructures have attracted increasing attention due to their potential application in both conditional optical devices and new generation of nano-electronics and nano-optoelectronics because of their special structure-related chemical and physical properties.
Journal ArticleDOI
Humidity-Independent Gas Sensors Using Pr-Doped In2O3 Macroporous Spheres: Role of Cyclic Pr3+/Pr4+ Redox Reactions in Suppression of Water-Poisoning Effect
Jun Sik Kim,Chan Woong Na,Chang Hoon Kwak,Hua Yao Li,Ji Won Yoon,Jae Hyeok Kim,Seong Yong Jeong,Jong Heun Lee +7 more
TL;DR: The mechanism for the humidity-immune gas-sensing characteristics was investigated by X-ray photoelectron and diffuse reflectance infrared Fourier transform spectroscopies together with the phenomenological gas-Sensing results and discussed in relation with Pr3+/Pr4+ redox pairs, regenerative oxygen adsorption, and scavenging of hydroxyl groups.
Journal ArticleDOI
Surfactant assisted low temperature synthesis of nanocrystalline ZnO and its gas sensing properties
Rajendra C. Pawar,J.S. Shaikh,Annasaheb V. Moholkar,Sambhaji M. Pawar,Jin Hyeok Kim,J.Y. Patil,S.S. Suryavanshi,Pramod S. Patil +7 more
TL;DR: In this article, diaminopropane (DAP) was used as a structure directing agent to construct faceted microrod, nanoneedles and nanotower.
References
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Book
The surface science of metal oxides
TL;DR: In this paper, the electronic structure of transition metal-oxide surfaces is described. But the electronic structures of non-transition metaloxide surfaces have not been discussed, and they are not considered in this paper.
Journal ArticleDOI
Conduction Model of Metal Oxide Gas Sensors
Nicolae Barsan,Udo Weimar +1 more
TL;DR: In this article, the authors provide a frame model that deals with all contributions involved in conduction within a real world sensor, and then summarize the contributions together with their interactions in a general applicable model for real world gas sensors.
Journal ArticleDOI
The surface and materials science of tin oxide
Matthias Batzill,Ulrike Diebold +1 more
TL;DR: A review of surface science studies of single crystal surfaces, but selected studies on powder and polycrystalline films are also incorporated in order to provide connecting points between surface sciences studies with the broader field of materials science of tin oxide as discussed by the authors.