Fabrication of Graphene Oxide-Decorated Mesoporous NiFe<sub>2</sub>O<sub>4</sub> as an Electrocatalyst in the Hydrogen Gas Evolution Reaction
Afiten R. Sanjaya,
Salsabila Amanda,
Tribidasari A. Ivandini,
Faisal Abnisa,
Grandprix T. M. Kadja,
Uji Pratomo,
Yatimah Alias,
Munawar Khalil
Affiliations
Afiten R. Sanjaya
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia
Salsabila Amanda
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia
Tribidasari A. Ivandini
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia
Faisal Abnisa
Department of Chemical and Materials Engineering, Faculty of Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Grandprix T. M. Kadja
Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung 40132, Indonesia
Uji Pratomo
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km.21, Sumedang 45363, Indonesia
Yatimah Alias
Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
Munawar Khalil
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia
An electrocatalyst for the hydrogen evolution reaction has been successfully synthesized from graphene oxide (GO) decorated with the mesoporous NiFe2O4. A high catalytic activity performance was reached by using the GCE surface as a conductor, and the synthesized composite contained GO/NiFe2O4. Based on the results, the as-prepared electrocatalyst exhibited a high overpotential for the HER reaction of 36 mV vs. RHE at a 10 mA current density, with an electrochemical active surface area (ECSA) of 3.18 × 10−4 cm2. Additionally, the electrocatalyst demonstrated a considerably good performance after the 9000 s stability test. It is believed that such an enhancement in electrocatalytic activity was due to the synergistic effect between the unique porosity feature of the mesoporous NiFe2O4, which may provide a more active surface, and the high conductivity of the GO.
