期刊
ACS APPLIED NANO MATERIALS
卷 2, 期 8, 页码 4756-4764出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.9b00578
关键词
O-3 sensor; V2O5/TiO2; heterostructures; hydrothermal method; chemiresistors
资金
- FAPESP [FAPEP 2013/17639-4, 2013/07296-2, 17/18649-4, 2017/12437-5]
- CNPq [311463/2017-7]
- CAPES [001]
- Laboratory of Micro fabrication at the LNNano/CNPEM [LMF-18580]
- Spanish Ministry of Economy and Competitiveness [MAT2016-79776-P]
- Government of Aragon [DGA E13_17R]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [17/18649-4] Funding Source: FAPESP
Over the last decades, there has been considerable interest in the synthesis of one-dimensional (1D) metal oxide nanostructures that can be used in gas sensor devices. Heterostructures, obtained by a combination of different semiconductor nanomaterials with different band energies, have been extensively studied in order to enhance their gas-sensing performance. In this context, our present study focuses on the investigation of chemiresistive-sensing capabilities of a combination of TiO2 nanoparticles and V2O5 nanowires obtained via hydrothermal treatment of the peroxometal complex. The formation of V2O5/TiO2 heterostructures was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) measurements. This study also proposes an efficient approach to produce 1D V2O5/TiO2 heterostructures with a good range of detection (0.09-1.25 ppm) and remarkable ozone-sensing properties related to repeatability and selectivity.
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