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Kumarage GWC, Panamaldeniya SA, Maddumage DC, Moumen A, Maraloiu VA, Mihalcea CG, Negrea RF, Dassanayake BS, Gunawardhana N, Zappa D, Galstyan V, Comini E. Synthesis of TiO 2-(B) Nanobelts for Acetone Sensing. Sensors (Basel) 2023; 23:8322. [PMID: 37837151 PMCID: PMC10575087 DOI: 10.3390/s23198322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/04/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023]
Abstract
Titanium dioxide nanobelts were prepared via the alkali-hydrothermal method for application in chemical gas sensing. The formation process of TiO2-(B) nanobelts and their sensing properties were investigated in detail. FE-SEM was used to study the surface of the obtained structures. The TEM and XRD analyses show that the prepared TiO2 nanobelts are in the monoclinic phase. Furthermore, TEM shows the formation of porous-like morphology due to crystal defects in the TiO2-(B) nanobelts. The gas-sensing performance of the structure toward various concentrations of hydrogen, ethanol, acetone, nitrogen dioxide, and methane gases was studied at a temperature range between 100 and 500 °C. The fabricated sensor shows a high response toward acetone at a relatively low working temperature (150 °C), which is important for the development of low-power-consumption functional devices. Moreover, the obtained results indicate that monoclinic TiO2-B is a promising material for applications in chemo-resistive gas detectors.
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Affiliation(s)
- Gayan W. C. Kumarage
- SENSOR Lab, Department of Information Engineering, University of Brescia, 25133 Brescia, Italy or (G.W.C.K.)
- Department of Physics and Electronics, Faculty of Science, University of Kelaniya, Kelaniya 11600, Sri Lanka
| | - Shasika A. Panamaldeniya
- Postgraduate Institute of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka
- Department of Physics, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Dileepa C. Maddumage
- Postgraduate Institute of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka
- Department of Physics, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Abderrahim Moumen
- SENSOR Lab, Department of Information Engineering, University of Brescia, 25133 Brescia, Italy or (G.W.C.K.)
| | - Valentin A. Maraloiu
- Laboratory of Atomic Structures and Defects in Advanced Materials, National Institute of Materials Physics, Atomistilor str. 405 A, 077125 Magurele, Romania; (V.A.M.)
| | - Catalina G. Mihalcea
- Laboratory of Atomic Structures and Defects in Advanced Materials, National Institute of Materials Physics, Atomistilor str. 405 A, 077125 Magurele, Romania; (V.A.M.)
| | - Raluca F. Negrea
- Laboratory of Atomic Structures and Defects in Advanced Materials, National Institute of Materials Physics, Atomistilor str. 405 A, 077125 Magurele, Romania; (V.A.M.)
| | - Buddhika S. Dassanayake
- Department of Physics, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Nanda Gunawardhana
- Research and International Affairs, Sri Lanka Technological Campus, Padukka 10500, Sri Lanka
| | - Dario Zappa
- SENSOR Lab, Department of Information Engineering, University of Brescia, 25133 Brescia, Italy or (G.W.C.K.)
| | - Vardan Galstyan
- SENSOR Lab, Department of Information Engineering, University of Brescia, 25133 Brescia, Italy or (G.W.C.K.)
| | - Elisabetta Comini
- SENSOR Lab, Department of Information Engineering, University of Brescia, 25133 Brescia, Italy or (G.W.C.K.)
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