Speaker
Description
Liquefied petroleum gas (LPG) is widely used in our daily lives as an alternative fuel for cooking and various industries. The LPG contains a mixture of propane and butane. On the other hand, they possess flammable and explosive properties. The December 2022 incident in Boksburg, South Africa, involving an LPG tanker poses a significant threat to infrastructure, public safety, and the environment. Gas leaks can be caused by various factors, including human error, storage, and transportation. Gas sensors are employed to detect such gas leakages. Much focus has been dedicated to investigating the use of semiconductor metal oxides in gas sensing. Chromium (III) oxide (Cr2O3) is a widely known p-type metal oxide semiconductor with high catalytic activity and thermal stability. Herein, Cr2O3 was synthesized via a hydrothermal method and evaluated for LPG sensing. Various characterization techniques were used to probe properties such as morphology, structure, optical properties, chemical state, and gas sensing. The gas-sensing characteristics of Cr2O3 showed a high response to 1000 ppm LPG at 125 °C. Such improvement could be associated with three-dimensional (3D) mesoporous materials, which are favourable owing to the high surface area and rich mesopores for gas molecule adsorption.
| Apply for student award at which level: | PhD |
|---|