| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 236876 | Powder Technology | 2013 | 7 Pages |
Nickel hydroxide (β-Ni(OH)2) and nickel oxyhydroxide (β-NiOOH) nanoparticles assigned as P and PO, respectively, were successfully synthesized through a microwave-assisted oxidation technique using sodium hydroxide as the precipitating agent and sodium hypochlorite as the oxidizing agent. NiO nanoparticles were then obtained by thermal decomposition of nickel oxyhydroxide (PO) compound. The effect of the parameters such as concentration of the precipitating agent and calcination temperature on the structural characteristics of the products was investigated. The as-prepared materials were well characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetry (TGA), and scanning electron microscopy (SEM) analytical techniques. XRD and SEM results indicated that the crystallinity and particle size of the products depend on NaOH concentration and calcination temperature.
Graphical abstractβ-Ni(OH)2 and β-NiOOH nanoparticles were synthesized by a microwave-assisted oxidation method using sodium hydroxide as the precipitating agent and sodium hypochlorite as the oxidizing agent. NiO nanoparticles were then obtained by a thermal decomposition process of the β-NiOOH. XRD and SEM results indicated that the crystallinity and particle size of the products depend on NaOH concentration and calcination temperature.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Synthesis of β-Ni(OH)2 and β-NiOOH NPs by a MW-assisted oxidation method ► Preparation of NiO NPs by thermal decomposition process of the β-NiOOH ► Increasing the crystallinity and particle sizes of products with [NaOH] and T
