Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8160820 | Physica B: Condensed Matter | 2018 | 7 Pages |
Abstract
Sponge-like nickel composed of micro-chains with a diameter of 1-5â¯Î¼m was selectively synthesized by the hydrothermal method, using sodium hydroxide (NaOH) as the alkaline reagent, aqueous hydrazine as reducing agent and citric acid as a coordination agent. The time-dependent samples prepared at different NaOH concentrations were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectrometer (FTIR). The results showed that the agglomerates of nickel citrate hydrazine complex nanoplates were first precipitated and then reduced to prickly nickel micro-chains at a lower NaOH concentration, which played a role in the further formation of sponge-like nickel. Also, the probable growth mechanism of the sponge-like nickel was proposed. The magnetic properties of sponge-like nickel were studied using a vibrating sample magnetometer. The sponge-like nickel exhibited a ferromagnetic behavior with a saturation magnetization value of 43.8 emu gâ1 and a coercivity value of 120.7â¯Oe.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Bin Shao, Xueguo Yin, Weidong Hua, Yilong Ma, Jianchun Sun, Chunhong Li, Dengming Chen, Donglin Guo, Kejian Li,