Novel Fe doped NiO-based electrode material for photoactivated catalyst and supercapacitor application

• Published in: Journal of energy storage 2024-12, Vol.103, p.114284, Article 114284
• Main Authors: Iqbal, Tahir, Munir, Rana Mustansar, Farooq, Huma, Afsheen, Sumera, Younas, Ayesha, Pham, Phuong V., Syed, Asad, AL-Shwaiman, Hind A., Wong, Ling Shing
• Format: Article
• Language: English
• Subjects: Capacitive properties; MB dye; Nanoparticles; NiO; Supercapacitor
• ISSN: 2352-152X
• DOI: 10.1016/j.est.2024.114284

Pure NiO and Fe-doped NiO NPs were prepared using coprecipitation synthesis for potential usage in supercapacitors and photocatalytic degradation of MB dye. The synthesized materials such as NiO, Fe1%NiO, Fe3%NiO, Fe5%NiO, and Fe7%NiO are efficient photocatalysts. Different characterization techniques like XRD, SEM, EDX, PL, and UVVis spectroscopy were used to examine synthesized nanomaterial. In order to improve the photocatalytic activity, the optical properties of prepared nanoparticles were enhanced by adding Fe into NiO. The optimal sample Fe5%NiO with bandgap 3.21 eV led to the degradation of 95 % of MB dye during the time interval of 120 min. The optimal catalyst's high ratio of surface-to-volume provides many active sites to degrade the pollutant. Cyclic test and reusability were also performed to check the stability of the optimum catalyst. To study the capacitive properties CV, GCD, and EIS techniques were utilized. The greatest specific capacitance of the 5 % Fe-doped NiO is equivalent to 1200 F/g, suggesting a significant increase above other reported materials based on NiO. These nanostructures showed good charging-discharging retention. The high capacitance of these nanostructures has shown that they have potential use in supercapacitors. This study will be helpful for manufacturing innovation. [Display omitted] •A coprecipitation method ere used for the synthesis of Fe doped NiO.•The average crystallite size of NiO and Fe5%NiO was 73.3 nm and 38.7 nm respectively.•The most optimal sample was Fe5%NiO having the 95 % degradation.•Fe5%NiO have shown excellent capacitance 1200F/g.•The synthesized materials showed morphology like nano-rods