TWO NEW CATALYSTS FOR OXIDATION OF WATER TO OXYGEN

Author

Takia Sultana, Louisiana State University and Agricultural and Mechanical CollegeFollow

Semester of Graduation

Spring 2024

Degree

Master of Science (MS)

Department

Chemistry

Document Type

Thesis

Abstract

If fuels, such as hydrogen or methanol, are to be produced from renewable energy (solar or wind) in the future, efficient catalysts will be needed, not only for fuel production reactions but for the essential simultaneous oxidation of water to O₂. Ruthenium complexes are among the more promising water oxidation catalysts (WOCs). Two new isomeric ruthenium WOCs have been prepared based on the benzylpyridyltriazole ligand (Figure 3); trans-py-[Ru(tpy)(bpt)(H₂O)]²⁺ (trans-py-1) and trans-trz-[Ru(tpy)(bpt)(H₂O)]²⁺ (trans-trz-1) (tpy = 2,2’:6’,2’’-terpyridine, bpt = benzylpyridyltriazole). Ceric ammonium nitrate [(CAN)/Ce(IV)] oxidants were used, among other known oxidants, because of their spontaneous reaction under standard conditions. The oxygen evolution tests were performed individually for each complex and showed that both complexes catalyze water oxidation by Ce(IV) in a dilute nitric acid solution, and a dinuclear Ru-oxo [Ru(III)] complex has been isolated from that Ru(II)-Ce(IV) solution and characterized via UV-vis spectroscopy, mass spectroscopy, and cyclic voltammetry.

Date

4-4-2024

Recommended Citation

Sultana, Takia, "TWO NEW CATALYSTS FOR OXIDATION OF WATER TO OXYGEN" (2024). LSU Master's Theses. 5951.
https://repository.lsu.edu/gradschool_theses/5951

Committee Chair

Maverick Andrew