Journal
CERAMICS INTERNATIONAL
Volume 47, Issue 3, Pages 3603-3613Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.09.209
Keywords
Nanostructure; NiO; Reduced graphene oxide; Composites; Photocatalysis
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Funding
- King Saud University Riyadh (Saudi Arabia) [RSP 2020/163]
- AUC-Cairo for STRC [SSE-CHEM-S.Z.-FY19-FY20-FY21-RG (1-19)2018-Oct-01-17-53-22]
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NiO nanostructure was synthesized using a simple co-precipitation method and embedded on a reduced graphene oxide surface through ultrasonication. The study found that doping reduced grain size, increased BET surface area, and improved rate constant.
NiO nanostructure was synthesized using a simple co-precipitation method and was embedded on reduced graphene oxide surface via ultrasonication. Structural investigations were made through X-ray diffraction (XRD) and functional groups were confirmed by Fourier transform infrared spectroscopy (FTIR). XRD analysis revealed the grain size reduction with doping. Fourier transform infrared spectroscopy confirmed the presence of metal-oxygen bond in pristine and doped NiO nanostructure as well as the presence of carbon containing groups. Scanning electron microscopy (SEM) indicated that the particle size decreased when NiO nanostructure was doped with copper. BET surface area was found to increase almost up to 43 m(2)/g for Cu doped NiO nanostructure/rGO composite. Current-voltage measurements were performed using two probe method. UV-Visible spectroscopic profiles showed the blue and red shift for Cu doped NiO nanostructure and Cu doped NiO Nanostructure/rGO composite respectively. Rate constant for Cu doped NiO nanostructure/rGO composite found to increase 4.4 times than pristine NiO nanostructure.
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