Design of Mesoporous Oxides as Semiconductor Gas Sensor Materials

Mesoporous catalytic filters for semiconductor gas sensors

An effective way to improve sensor selectivity and stability is the use of catalytic filters to block interfering and poisoning gas molecules from reaching the sensor surface. Mesoporous silica with high resistivity and hugh surface areas are ideally suited as a base material for this application. When impregnated with proper catalysts, mesoporous silica has a great potential to eliminate respo...

Potential of Metal Reactive Oxides for Development of 4H-Silicon Carbide-based Metal-Oxide- Semiconductor Gas Sensor

The escalating demand in automotive industry nowadays has evoked civic awareness towards environmental issues brought by the exhaust emissions through fossil fuel combustion engine or hydrogen leak in fuel cell vehicles. Metal-oxide-semiconductor (MOS)-based gas sensors that were able to monitor the changes of oxygen and hydrogen leak were required. By replenishing the conventional silicon-MOS-...

Semiconductor functional oxides

Current advancements in applications of chitosan based nano-metal oxides as food preservative materials

Objective(s): A remarkable growing effort has been conducted by several researchers to fabricate food packaging materials which are able to protect foodstuffs and enhance their shelf-life from food-borne pathogens and fungal attack which causes great damage to the food industries. Recent studies has focused on the potential applications of nano-metal oxides in food packaging area. Method...

ZnO nanoparticles as sensing materials with high gas response for detection of n-butanol gas

The high crystallinity ZnO nanoparticles with an average particle diameter 30 nm have been successfully synthesized with a surfactant-mediated method. The cationic surfactant (cetyltrimethylammonium bromide, CTAB) and the hydrous metal chlorides (ZnCl2⋅2H2O) appear to be the good candidates for obtaining a high yield of nanoparticles. The structural and morphological characterizations were carr...