Open AccessHydrothermal synthesis of novel Ni microflowers with enhanced ferromagnetic properties
Author(s) -
Han Xinghua,
Xu Chunju,
Chen Huiyu
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5666
Subject(s) - materials science , nickel , reagent , hydrothermal circulation , coercivity , ferromagnetism , chemical engineering , bromide , hydroxide , nanotechnology , microstructure , inorganic chemistry , chemistry , metallurgy , organic chemistry , physics , quantum mechanics , engineering , condensed matter physics
Novel nickel microflowers assembled with many thin nanoplates were synthesised through a simple hydrothermal method using sodium hypophosphite as a green reducing reagent. Sodium tartrate served as a complexing reagent and cetyltrimethylammonium bromide (CTAB) was used as a surfactant. It was found that the amount of sodium hydroxide played a key role in determining both the shape and to further the self‐assembly process of nickel flowers. Such a flower‐like nickel microstructure shows a great enhancement of the ferromagnetic properties with a coercivity of 308.7 Oe, which may be ascribed to the distinctive two‐dimensional (2D) anisotropic structure of the nanoplates and the final hierarchically flower‐like shape. This work presents a preferred approach to fabricate high‐quality magnetic nickel microflowers which have potential applications in electrochemical devices, magnetic sensors, and catalytic agents.