Synthesis, characterization and influence of reduced Graphene Oxide (rGO) on the performance of mixed metal oxide nano-composite as optoelectronic material and corrosion inhibitor

• Published in: Chemical Data Collections Vol. 29; p. 100527
• Main Authors: Kumar, Harish, Rajrani, Rahul, Yadav, Ankita, Rajni
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2020
• Subjects: DFT; Metal oxide nanoparticles; Nanocomposite; Reduced Graphene Oxide; Sol-gel method; Metal oxide nanoparticles; Nanocomposite; DFT; Sol-gel method; Reduced Graphene Oxide
• ISSN: 2405-8300; 2405-8300
• DOI: 10.1016/j.cdc.2020.100527

•Cu, Zn and NiO mixed metal oxide nanocomposites were synthesized by sol-gel method.•XRD, FE-SEM, TEM, TGA/DTA, FTIR, UV-visible techniques were used.•Mixed MO NPs/rGO NCs was tested as optoelectronics & anticorrosive material for mild steel.•80% corrosion inhibition efficiency was shown for mild steel in 0.1 M HCl.•Direct optical energy band gap was found to be 0.043 eV for NCs. Advancement in functional properties of mixed metal oxide nanocomposite in presence of reduced Graphene Oxide (rGO) was investigated thoroughly. We synthesized Cu, Zn and Ni oxide nanoparticles using sol-gel method. The modified Hummers method was used to synthesize rGO. In situ method was used to synthesize nano-composite of rGO and mixed metal oxide nanocomposite (rGO/MONC). UV-visible, FTIR, XRD, FE-SEM, TEM, DFT and TGA/DTA techniques were used for characterizing metal oxide nanoparticles, rGO and rGO/MONC. It is observed that the performance of rGO coupled with mixed metal oxide nanoparticle varies with concentration. Weight loss and electrochemical polarization method were carried out to find corrosion rate and percentage corrosion inhibition efficiency. Density functional theory was used to find optical band gap, electronegativity (χ), chemical hardness (η), electron affinity (Ea) work function (Wf) and global softness parameter (σ). The synthesized rGO/MONC was investigated as optoelectronics and anticorrosive material for mild steel in 0.1 M HCl medium. [Display omitted]