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dc.contributor.author Kortidis, Ioannis
dc.contributor.author Swart, HC
dc.contributor.author Ray, Suprakas S
dc.contributor.author Motaung, David E
dc.date.accessioned 2019-07-23T11:42:13Z
dc.date.available 2019-07-23T11:42:13Z
dc.date.issued 2019-04
dc.identifier.citation Kortidis, I., Swart, H.C., Ray, S.S, and Motaung, D.E. 2019. Characteristics of point defects on the room temperature ferromagnetic and highly NO2 selectivity gas sensing of p-type Mn3O4 nanorods. Sensors and Actuators B: Chemical en_US
dc.identifier.issn 0925-4005
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S0925400519300267
dc.identifier.uri https://doi.org/10.1016/j.snb.2019.01.007
dc.identifier.uri http://hdl.handle.net/10204/11037
dc.description Copyright: 2019 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, kindly consult the publisher's website en_US
dc.description.abstract This study investigates the room temperature (RT) gas-sensing and ferromagnetic behavior of p-type materials based on a comparison of NiO, Mn3O4, and CuO nanostructures prepared using a hydrothermal method. The Mn3O4 nanorods based sensor exhibited high sensitivity and responses to 40 ppm NO2 and a selectivity to NO2 over the interference of CO, NH3, CH4, C6H6, C7H8 and C3H6O gases at 23 °C. The observed response and selectivity to 40 ppm NO2 are ascribed to the vastly gas accessibility induced by ample porosity, high surface area and point defects of Mn3O4. This is justified by a clear correlation of point defects with the ferromagnetic and gas-sensing properties. The linear behavior observed for the response versus gas concentration (adj R2=0.98519), signified that the Mn3O4-based sensor is suitable for NO2 detection at 23 °C. A model of the gas-sensing mechanism and the influence of point defects were presented to further illustrate the sensing performance. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Worklist;22477
dc.subject Mn3O4 en_US
dc.subject p-type materials en_US
dc.subject Ferromagnetism en_US
dc.subject Gas sensing en_US
dc.title Characteristics of point defects on the room temperature ferromagnetic and highly NO2 selectivity gas sensing of p-type Mn3O4 nanorods en_US
dc.type Article en_US


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