Speaker
Ms
Katekani Shingange
(CSIR/UFS)
Description
Lanthanum (La) based perovskite oxides such as LaFeO3, LaCoO3 and LaAlO3 have stimulated great interest in the gas sensing technology world as promising candidates for gas sensing towards different gases. This is due to their unique electrical and electrocatalytic properties, providing good response with high selectivity and stability. Out of all the La based perovskite oxides, LaAlO3 is a quite new perovskite that has mostly been used as an additive to other materials such as ZnO and SrTiO3 due to its good electron gas conductivity. However, there are only a few reports on the application of LaAlO3 for gas sensing. In this work, LaAlO3 nanostructures have been synthesized using metal nitrate salts through the hydrothermal microwave-assisted method. Characterizations of the synthesized materials by means of X-ray diffraction, scanning electron microscopy and nitrogen adsorption confirmed the formation of high purity hexagonal 2D sheet-like structures LaAlO3 with high surface area. The sheet-like structures were assessed for gas sensing towards several test gases namely CO, CH3, C2 H5 OH, NH3 and NO2 at different working temperatures ranging from room temperature to 400 °C.
Supervisor details<br><b>If not a student, type N/A.</b><br>Student abstract submision<br>requires supervisor permission:<br>please give their name,<br> institution and email address.
Prof G.H Mhlongo, Council for Scientific and Industrial Research (CSIR), gmhlongo@csir.co.za
| Consideration for<br>student awards<br><b>Choose one option<br>from those below.</b><br>N/A<br>Hons<br>MSc<br>PhD | PhD |
|---|---|
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Primary authors
Ms
Gugu Mhlongo
(CSIR, MSM, Nano Centre)
Prof.
Hendrik Swart
(University of the Free State)
Ms
Katekani Shingange
(CSIR/UFS)
