Nickel-based nitrodopamine MOF and its derived composites functionalized with multi-walled carbon nanotubes for efficient OER applications

• Published in: Fuel (Guildford) 2023-01, Vol.331, p.125881, Article 125881
• Main Authors: Kiran, Sonia, Yasmeen, Ghazala, Shafiq, Zahid, Abbas, Amir, Manzoor, Sumaira, Hussain, Dilshad, Adel Pashameah, Rami, Alzahrani, Eman, Alanazi, Abdullah K., Naeem Ashiq, Muhammad
• Format: Article
• Language: English
• Subjects: Electrocatalysis; Ni-based MOF derived composites; Oxygen evolution reaction; Water splitting
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/j.fuel.2022.125881

[Display omitted] •Ni based MOF composites were solvothermally synthesized with multi-walled carbon nanotubes with enhanced surface area.•Ni-nitrodopamine (NDA/MWCNTs-a) electrocatalyst exhibits outstanding catalytic activity for OER.•Electrocatalyst has overpotential of 285 mV to attain current density of 10 mA cm−2 for OER.•Chronoamperometric analysis were made for estimation of long-term stability of electrocatalyst for 24 h. In recent era, development of an un-expensive, highly effective, green and robust electrocatalyst for the production of hydrogen via water splitting is a major consequence to deal with energy crisis. In the present work, a novel Ni based MOF and its nanocomposite functionalized with multi-walled carbon nanotubes (MWCNTs) is synthesized via solvothermal method. To increase the catalytic activity of the synthesized material, heat treatment of the fabricated MOF is carried out at 673 K for 3 h. For structural, textural and morphological studies different analytical techniques are applied with subsequent utilization of synthesized materials for catalyzing slow oxygen evolution reaction (OER). Amongst all Ni-nitrodopamine (NDA/MWCNTs-a) electrocatalyst displays outstanding catalytic activity at low overpotential of 285 mV, small Tafel slope of 73 mV dec-1, and long-term stability of 24 h surpassing the catalytic proficiency for noble metal oxides such as IrO2 and RuO2.