Gas sensing performances and mechanism at atomic level of Au-MoS2 microspheres

Wang, Jingxuan; Zhou, Qu; Lu, Zhaorui; Wei, Zhijie; Zeng, Wen

doi:10.1016/j.apsusc.2019.06.075

Cited by 113 publications

(39 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gas sensing is one of important applications of hollow nanofibers. Among gas sensing materials, semiconducting metal oxides such as SnO 2 , ZnO, TiO 2 , and CuO are applied the most widely in gas sensors due to the excellent gas sensing properties in terms of response, response and recovery times, and stability (Xu et al, 2017a;Zhou et al, 2018c;Wang et al, 2019a). The higher specific surface area of sensing materials can provide the higher sensitivity.…”

Section: Application Of Hollow Nanofibers In Gas Sensingmentioning

confidence: 99%

Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

Zhou

Wei

et al. 2019

Front. Mater.

Self Cite

View full text Add to dashboard Cite

Hollow structured nanofibers have attracted much attention in diverse domains owing to their unique physicochemical properties and characteristics. Gas sensing is one of the most promising applications. In electrical engineering, the detection of SF 6 decomposing gas products is significant to monitor the insulation status online of gas insulated switchgear (GIS). This mini-review presents the developments of hollow structured nanofibers in synthesis strategies and gas sensing application, especially in the detection of SF 6 decomposing gas products, including hydrogen disulfide (H 2 S), sulfur dioxide (SO 2), thionyl fluoride (SOF 2), and sulfuryl fluoride (SO 2 F 2). In addition, the gas sensing mechanism of metal oxide hollow nanofibers based gas sensor are discussed.

show abstract

Section: Application Of Hollow Nanofibers In Gas Sensingmentioning

confidence: 99%

Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

Zhou

Wei

et al. 2019

Front. Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Currently, there are two common techniques-photo ionization detector (PID) and flame ionization detector (FID)-to detect VOCs, however, the application of these methods in industry are limited due to the relatively high cost and complicated maintenance. Considering the characteristics of small size, low cost, and convenient fabrication, semiconductor gas sensor technology plays an important role in many fields (Lu et al, 2018;Xiao et al, 2018;Zhang D. Z. et al, 2018;Zhang Q. Y. et al, 2018;Zhou et al, 2018cZhou et al, , 2019Wang et al, 2019a;Wei et al, 2020), so it is reasonable to propose the employment of a gas sensor to realize the online monitoring of VOCs.…”

Section: Introductionmentioning

confidence: 99%

Volatile Organic Compounds Gas Sensors Based on Molybdenum Oxides: A Mini Review

Wang¹,

Zhou²,

Peng³

et al. 2020

Front. Chem.

Self Cite

View full text Add to dashboard Cite

As a typical n-type semiconductor, MoO 3 has been widely applied in the gas-detection field due to its competitive physicochemical properties and ecofriendly characteristics. Volatile organic compounds (VOCs) are harmful to the atmospheric environment and human life, so it is necessary to quickly identify the presence of VOCs in the air. This review briefly introduced the application progress of an MoO 3-based sensor in VOCs detection. We mainly emphasized the optimization strategies of a high performance MoO 3 , which consists of morphology-controlled synthesis and electronic properties functional modification. Besides the general synthesis methods, its gas-sensing properties and mechanism were briefly discussed. In conclusion, the application status of MoO 3 in gas-sensing and the challenges still to be solved were summarized.

show abstract

“…To date, the number of oil-immersed transformers accounts for more than 90% of the total number of power transformers, and the operating state of these power transformers will directly affect the condition of power systems (Zhou et al, 2016;. For a long-running transformer, partial overheating and partial discharge will lead to the decomposition of transformer oil into a variety of fault gases, namely hydrogen (H 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), methane (CH 4 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), and ethane (C 2 H 6 ) (Jin et al, 2017;Gao et al, 2019;Park et al, 2019;Wang J. X. et al, 2019). Hence, the detection of these fault characteristic gases has been extensively applied to diagnose early latent faults and evaluate the operation quality of oil-immersed transformers (Zhang et al, 2018a;Cui et al, 2019;Gui et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Application of WO3 Hierarchical Structures for the Detection of Dissolved Gases in Transformer Oil: A Mini Review

Wei

Peng

et al. 2020

Front. Chem.

Self Cite

View full text Add to dashboard Cite

Oil-immersed power transformers are considered to be one of the most crucial and expensive devices used in power systems. Hence, high-performance gas sensors have been extensively explored and are widely used for detecting fault characteristic gases dissolved in transformer oil which can be used to evaluate the working state of transformers and thus ensure the reliable operation of power grids. Hitherto, as a typical n-type metal-oxide semiconductor, tungsten trioxide (WO 3) has received considerable attention due to its unique structure. Also, the requirements for high quality gas detectors were given. Based on this, considerable efforts have been made to design and fabricate more prominent WO 3 based sensors with higher responses and more outstanding properties. Lots of research has focused on the synthesis of WO 3 nanomaterials with different effective and controllable strategies. Meanwhile, the various morphologies of currently synthesized nanostructures from 0-D to 3-D are discussed, along with their respective beneficial characteristics. Additionally, this paper focused on the gas sensing properties and mechanisms of the WO 3 based sensors, especially for the detection of fault characteristic gases. In all, the detailed analysis has contributed some beneficial guidance to the exploration on the surface morphology and special hierarchical structure of WO 3 for highly sensitive detection of fault characteristic gases in oil-immersed transformers.

show abstract

Gas sensing performances and mechanism at atomic level of Au-MoS2 microspheres

Cited by 113 publications

References 71 publications

Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

Volatile Organic Compounds Gas Sensors Based on Molybdenum Oxides: A Mini Review

Application of WO3 Hierarchical Structures for the Detection of Dissolved Gases in Transformer Oil: A Mini Review

Contact Info

Product

Resources

About