Date of Publication
2025
Document Type
Master's Thesis
Degree Name
Master of Science in Chemistry
Subject Categories
Chemistry
College
College of Science
Department/Unit
Chemistry
Thesis Advisor
Glenn V. Alea
Defense Panel Chair
Drexel H. Camacho
Defense Panel Member
Jose Paolo O. Bantang
Nestor S. Valera
Abstract (English)
Water splitting, which involves the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), is a promising approach for the sustainable production of carbon-free energy. While both reactions are critical, the OER is particularly challenging due to its sluggish, four-electron process, making it the bottleneck of the overall reaction. Currently, the most efficient electrocatalysts are based on iridium and ruthenium oxides. However, platinum group metals are expensive and scarce, which hinders their large-scale application, resulting in an urgent need to find a scalable, low-cost alternative with good stability and high catalytic activity. This work focused on the fundamental studies for underpotential deposition of iron on a cobalt manganese (oxy)hydroxide (Fe/CoMnOOH) for improved oxygen evolution reaction activity. Preliminary studies on the influence of solution pH and nature of precursor iron (Fe) solutions for Fe deposition onto a cobalt manganese (oxy)hydroxide (Fe/CoMnOOH) supported on nickel foam were evaluated. The impact of electrodeposition parameters such as deposition potential and deposition time on the electrocatalytic performance of the electrocatalysts was also studied. The results in this work highlighted that maximising the active sites alone does not translate to high catalytic performance towards OER. The most appropriate electrocatalyst depends on which performance metric is most critical.
Abstract Format
html
Abstract (Filipino)
Water splitting, which involves the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), is a promising approach for the sustainable production of carbon-free energy. While both reactions are critical, the OER is particularly challenging due to its sluggish, four-electron process, making it the bottleneck of the overall reaction. Currently, the most efficient electrocatalysts are based on iridium and ruthenium oxides. However, platinum group metals are expensive and scarce, which hinders their large-scale application, resulting in an urgent need to find a scalable, low-cost alternative with good stability and high catalytic activity. This work focused on the fundamental studies for underpotential deposition of iron on a cobalt manganese (oxy)hydroxide (Fe/CoMnOOH) for improved oxygen evolution reaction activity. Preliminary studies on the influence of solution pH and nature of precursor iron (Fe) solutions for Fe deposition onto a cobalt manganese (oxy)hydroxide (Fe/CoMnOOH) supported on nickel foam were evaluated. The impact of electrodeposition parameters such as deposition potential and deposition time on the electrocatalytic performance of the electrocatalysts was also studied. The results in this work highlighted that maximising the active sites alone does not translate to high catalytic performance towards OER. The most appropriate electrocatalyst depends on which performance metric is most critical.
Abstract Format
html
Language
English
Format
Electronic
Keywords
Electroforming; Photosynthetic oxygen evolution
Recommended Citation
Soliman, I. I. (2025). Studies on the electrochemical deposition of iron on cobalt manganese (Oxy)hydroxide and their catalytic activity towards oxygen evolution reaction. Retrieved from https://animorepository.dlsu.edu.ph/etdm_chem/34
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Embargo Period
12-12-2026
