Study of Laser Absorption in Mesoporous Silica and Alumina

Project: Research

Project Details


Two experimental setups based on GAs in Scattering Media Absorption Spectroscopy (GASMAS) method will utilized to study ordered and unordered mesoporous silica and alumina. The first setup is based on tunable diode lasers at 760 nm for measuring oxygen absorption line. The second setup will be based on tunable diode lasers at 935 nm for measuring water vapor absorption line and it will be developed in this project. A third setup will be developed to measure directly the effective absorption path lengths using a picosecond pulse laser and a time-correlated single-photon counting (TCSPC) system. These setups will be utilized to measure the effective absorption path lengths and the broadening of oxygen and water vapor lines. We will attempt to find a theoretical model or a correlation between these measurements and porosity, pore sizes and other properties of mesoporous silica and alumina measured by standard techniques: gas adsorption, TEM, and XRD. Some of the samples used in this study will be synthesized locally.
Effective start/end date15/04/1915/04/22


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