DataVXACS Applied Nano MaterialsPaper
journal article·2023-05-12Open access

Se-Doped Magnetic Co–Ni Spinel Ferrite Nanoparticles as Electrochemical Catalysts for Hydrogen Evolution

Mohamed Jaffer Sadiq Mohamed, Serkan Caliskan, Mohammed Ashraf Gondal, Munirah Abdullah Almessiere, Abdulhadi Baykal, Yassine Slimani, Khaled Abdelsabour Elsayed, Muhammad Hassan, Ismail Abdullah Auwal, Abdul Zeeshan Khan, Asif Ali Tahir, Anurag Roy

ACS Applied Nano Materials· Volume 6· Issue 9
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Abstract

High Resolution Image Download MS PowerPoint Slide The magnetic Co 0.5 Ni 0.5 Fe 2 O 4 spinel ferrites (NSFs) with various ( x %) Se ( x = 0.00–0.20) were synthesized via the sol–gel combustion route in conjunction with an advanced green laser ablation method. The structure and morphology of NSFs were explored through various physicochemical techniques. Interestingly, Se doping has a crucial impact on NSFs’ magnetic properties. While, at room temperature, the pristine sample exhibits a superparamagnetic-like behavior, the pristine sample and all doped CoNi NSFs + x % Se ( x = 0.05–0.20) samples exhibited a high value of coercivity and remanence at 10 K, indicating their hard magnetic properties. Our findings indicate that Se can be harnessed to tune the magnetic properties of CoNiFe 2 O 4 structures. In addition, improving effective electrocatalysts for hydrogen evolution reaction (HER) efficiency through water splitting is also vital to overcoming the impending energy crisis due to the rapid depletion of fossil fuels and their injurious impact on the environment. Hence, the optimized ideal catalysts CoNi NSFs + x % Se ( x = 0.15) were developed, which outperformed as electrocatalysts for HER with a Tafel slope of 91 mV/dec and a very low overpotential of 173.5 mV at a current density of 10 mA/cm 2, which could be attributed to a large number of electrochemically active surface area (5.2 cm 2 ), accelerated electron mobility at the electrocatalysts/electrolyte interface, and long-term stability.
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Research context

Energy storageNanomaterialsCatalysis & surfaces

OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Copper-based nanomaterials and applications · Advancements in Battery Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laser Research Group, Department of Physics & Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia

Department of Physical and Applied Sciences, University of Houston-Clear Lake, Houston, Texas 77058, United States

K. A. CARE Energy Research and Innovation Center, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia

Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia

Department of Nanomedicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia

Department of Basic Engineering Sciences, College of Engineering, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia

School of Physics, Minhaj University Lahore, Punjab 54000, Pakistan

Department of Chemistry, Faculty of Natural and Applied Sciences, Sule Lamido University, PMB 048 Kafin Hausa, Jigawa State, Nigeria

Department of Chemistry, Forman Christian College, Lahore 54600, Pakistan

Solar Energy Research Group, Environment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall TR10 9FE, U.K.

Funding

British Council · King Fahd University of Petroleum and Minerals

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