Cubic Cobalt Ferrites Within the Microspheres as Bi-Functional Catalyst Toward Electrochemical Water Splitting and Dopamine Sensing
ChemistrySelect, cilt.10, sa.36, 2025 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 10 Sayı: 36
- Basım Tarihi: 2025
- Doi Numarası: 10.1002/slct.202503919
- Dergi Adı: ChemistrySelect
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier
- Anahtar Kelimeler: Cobalt ferrite, Cubic microsphere, Electrocatalysis, OER, Sensor
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
Metal oxide-based electrochemical platforms emerge as the most suitable strategy, offering enhanced charge transfer kinetics and catalytic efficiency in energy and sensing applications. This study focuses on the morphology-controlled synthesis of cubic cobalt ferrites (CoFe2O4) in the form of microspheres via hydrothermal synthesis and their utilization as electrocatalysts in energy and sensing applications. The electrochemical evaluation for both water splitting and dopamine sensing was carried out through voltammetric studies. For the investigation of the oxygen evolution reaction (OER), as-fabricated cobalt ferrites exhibited a low overpotential of 330 mV to reach a current density of 10 mAcm−2 with the derived Tafel slope of 139 mVdec−1 in 1 M KOH solution. The fabricated electrode also demonstrated high current density and stability with negligible degradation after 24 h of continuous water electrolysis. The fabricated electrode also examined for the non-enzymatic electrochemical detection of dopamine with excellent performance having a high sensitivity of 28.38 µAmM−1, a low limit of detection (LOD) of 0.01 mM, and a broad linear range of 0.1–1 mM. In addition, this study addresses critical limitations of benchmark catalysts like RuO2 and Pt, including high cost and limited stability, presenting a cost-effective alternative for energy and biosensing applications.