Honors College Thesis
 

Investigation of Magnesium Dioxybenzenedicarboxylate (Mg-DOBDC) Thin-film Deposition onto Modified Glass Substrates

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https://ir.library.oregonstate.edu/concern/honors_college_theses/1544bv48d

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  • Metal-Organic Frameworks (MOFs) are crystalline compounds formed from reacting a metal ion with an organic ligand. They represent a promising new avenue in materials science for gas separations and storage. Certain MOFs, in particular Mg-MOF-74, have shown a strong affinity for the capture of CO2. This project investigated a known procedure for the synthesis of Mg-MOF-74 thin-film onto a chemically-treated glass substrate with the goal of improving process consistency and creating a standard operating procedure. Using drop casting, consistent films with 1-8 layer thicknesses were created. Through FTIR, CO2 transmittance was shown to decrease as film thickness increased, demonstrating improved CO2 uptake. The procedure was modified so that the aluminum hotplate covering was removed, which allowed for more even substrate heating. Additionally, ultra-sonication cleaning time was increased from 10 seconds to 30 seconds to ensure complete removal of particulate waste. Issues of surface cracking are a point for future investigation.
  • Key Words: Nanomaterials, metal organic frameworks, materials science, CO2 uptake, carbon sequestration, thin films, drop casting
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