Enhanced sensitive and selective sensors made with p-NiO nanowire/n-ZnO nanowire h...
| Full text | |
| Author(s): |
Perfecto, T. M.
;
Zito, C. A.
;
Volanti, D. P.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | CrystEngComm; v. 19, n. 20, p. 2733-2738, MAY 28 2017. |
| Web of Science Citations: | 11 |
| Abstract | |
Hierarchical WO3.0.33H(2)O nanocolumns were prepared by a simple combination of ultrasonic spray nozzle (USN) and microwave-assisted hydrothermal (MAH) methods. The USN step promoted a high nucleation rate of H2WO4 clusters, while glycine played an important role in the crystal growth in a preferred direction. The MAH step was responsible for the crystallization of the single orthorhombic WO3.0.33H(2)O phase and the self-assembly of the hierarchical structure. The as-prepared sample was tested as a volatile organic compound (VOC) sensor at room temperature (22 degrees C) and wet conditions. Enhanced isopropanol sensitivity and selectivity were achieved due to the high specific surface area provided by the combination of USN and MAH methods. Thus, this synthesis strategy is a promising approach for fabricating different gas sensing devices. (AU) | |
| FAPESP's process: | 16/04371-1 - Sensors based on reduced graphene oxide-WO3 and Ag-WO3 obtained by microwave-assisted ultrasonic spray and deposited on paper for detection of volatile organic compounds |
| Grantee: | Tarcísio Micheli Perfecto |
| Support type: | Scholarships in Brazil - Master |
| FAPESP's process: | 15/05916-9 - Synergy between Pd-SnO2 or reduced graphene oxide-SnO2 for volatile organic compounds detection in humidity |
| Grantee: | Cecilia de Almeida Zito |
| Support type: | Scholarships in Brazil - Master |
| FAPESP's process: | 13/23886-4 - Study on selectivity of hydrogenolysis / reductive hydrogenation processes of sugarcane bagasse under supercritical state catalyzed by structured metal oxides |
| Grantee: | Mauricio Boscolo |
| Support type: | Program for Research on Bioenergy (BIOEN) - Regular Program Grants |
| FAPESP's process: | 14/17343-0 - Effect of metal catalysts or reduced graphene oxide on metal oxides semiconductors for detection of volatile organic compounds |
| Grantee: | Diogo Paschoalini Volanti |
| Support type: | Regular Research Grants |