Title: Organic-Inorganic Hybrid Nano-composites for Environmental Application

Saleh Thaker Mahmoud

United Arab Emirates University, UAE


Prof. Saleh obtained his Ph.D. in Physics from Indian Institute of Technology-Delhi (India 2001). He is a full professor at UAE University and has 17 years’ experience in materials characterization and nano-devices fabrication. His publication record includes about 62 publications in international peer-reviewed journals and more than 38 presentations in international conferences. He is the principle investigator and Co-PI of 19 research projects and supervised several postgraduate students. He is an expert in measuring the optical and electrical properties of nanomaterials using different techniques. He has vast experience in nanoparticles synthesis and sensors’ fabrication for detecting hazardous gasses.


For environmental protection and safety, various industrial sectors have focused on monitoring and controlling the concentration of hazardous gases. Hydrogen sulfide (H2S) is a toxic and irritating gas which can be rapidly absorbed by human lungs and easily causes diseases in nervous system, and even death. It is produced in large quantities from places such as petroleum/natural gas drilling and refining, wastewater treatment, and kraft paper mills. Therefore, detecting H2S gas at low concentrations for health and environmental protection is necessary. Organic-inorganic hybrid materials are attracting considerable attention to be used for gas sensing application owing to their high sensitivity, selectivity and low power consumption. This presentation is focusing on fabricating a novel hydrogen sulfide gas sensor using semiconducting nanocomposites (mixture of polymers and metal oxide nanoparticles) to detect H2S gas at very low concentrations (few PPM). The sensors consist of different semiconducting nanostructures such as thin film and nanofibers made of organic films doped with ionic liquids (IL), and metal-oxide nanoparticles. Nanofibers are able to form a highly porous mesh and their large surface-to-volume ratio will improve the performance of the fabricated gas sensor. The fabrication process is scalable and cheap, thus, those sensors have the potential to be used for air quality monitoring in petroleum industry.