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MONTES SEGARRA AINHOA_TFM.pdf (1.23 MB)
MONTES SEGARRA AINHOA_Resums.pdf (151.76 KB)

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Document embargat fins el 2028-07-01

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Treball de fi de màster

Data de publicació

2026-06

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cc by-nc-nd (c) Montes Segarra, Ainhoa, 2026
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/231176

Iridium and Cobalt Electrocatalysts Supported on Anatase TiO2 for the Oxygen Evolution Reaction

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Ir-based catalysts are widely used for the oxygen evolution reaction (OER) in acidic media; however, their high cost and limited availability motivate the development of more efficient electrocatalysts. In this work, Ir and Ir-Co nanoparticles supported on anatase TiO2 are synthesized as electrocatalysts for the OER in acidic media. Co3O4-TiO2 supports with different Co contents are prepared and structurally characterized, confirming the formation of Co3O4 without affecting the anatase TiO2 phase. Ir deposition is carried out via polyol and alkaline hydrolysis microwave-assisted methods to evaluate the influence of the synthesis medium on metal incorporation and phase evolution. Electrochemical measurements show that Co incorporation significantly influences OER performance, with moderate Co contents enhancing activity and stability, while higher loadings lead to partial performance decay under prolonged operation. The alkaline hydrolysis synthesis promotes effective Co retention and the formation of hydroxylated Ir species, which are associated with improved catalytic behaviour. The optimized Ir/TiO2-Co catalysts exhibit a favourable balance between activity and durability, outperforming Ir/TiO2 systems and highlighting their potential for proton exchange membrane water electrolysis applications, contributing to the development of more efficient and sustainable technologies for the Green Hydrogen production

Descripció

Màster en Química de Materials Aplicada, Facultat de Química. Curs: 2025-2026. Tutors: Pere Lluís Cabot Julia, Teresa Andreu Arbella

Recurs relacionat

Matèries

Electrocatàlisi, Catalitzadors, Diòxid de titani, Treballs de fi de màster

Matèries (anglès)

Electrocatalysis, Catalysts, Titanium dioxide, Master's thesis

Citació

Col·leccions

Màster Oficial - Química de Materials Aplicada

Citació

MONTES SEGARRA, Ainhoa. Iridium and Cobalt Electrocatalysts Supported on Anatase TiO2 for the Oxygen Evolution Reaction. [consulted: 6 of November of 2026]. Available at: https://hdl.handle.net/2445/231176

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