Abdullah Aladim
Improving selectivity in graphene gas sensors.
- Email: a.k.a.aladim2@ncl.ac.uk
Supervisors
Project description
Gas sensors play a significant role in many application fields, such as:
- environmental monitoring
- industrial production and safety
- medical diagnosis
- military
- aerospace
A gas sensor’s specific surface-to-volume ratio is most important in determining its sensitivity. A larger detecting surface of the nanostructured materials leads to greater adsorption of gas species. This, in turn, leads to increased sensing capability.
Graphene is a one-atom thick carbon nanomaterial. Due to the infinitesimal thickness of graphene sheets, they are essentially ‘all surface’. This makes graphene an ideal material for gas sensing. But the chemical stability of graphene means that it has little selectivity. Traditional chemresistive sensors are made from metal oxides to catalytically interact with analytes. This facilitates their selectivity.
We are exploring the use of catalytic transition metal oxide nanoparticles to develop selectivity in graphene gas sensors.
Interests
Materials science.
Qualifications
- BSc in Physics from Al Jouf University, Saudi Arabia
- MSc in Physics from Emporia State University, United States