| Full text | |
| Author(s): |
Avansi, Waldir, Jr.
;
Catto, Ariadne C.
;
da Silva, Luis F.
;
Fiorido, Tomas
;
Bernardini, Sandrine
;
Mastelaro, Valmor R.
;
Aguir, Khalifa
;
Arenal, Raul
Total Authors: 8
|
| Document type: | Journal article |
| Source: | ACS APPLIED NANO MATERIALS; v. 2, n. 8, p. 17-pg., 2019-08-01. |
| Abstract | |
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. (AU) | |
| FAPESP's process: | 13/07296-2 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Elson Longo da Silva |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 17/12437-5 - Preparation and characterization of semiconductor nanoheterojunctions applied in photoactived gas sensors |
| Grantee: | Luís Fernando da Silva |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 13/17639-4 - Obtainment of nanostructured semiconductors: correlation of the photocatalytic properties to their structural characteristic |
| Grantee: | Waldir Avansi Junior |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/18649-4 - 2017 MRS Fall Meeting and Exhibit |
| Grantee: | Waldir Avansi Junior |
| Support Opportunities: | Research Grants - Meeting - Abroad |