Effect Of Various Technological Parameters On Particle Morphology And Uniformity Of Alpha-Ni(Oh)(2) Synthesized Via Surfactant-Free Hydrothermal Route
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY(2021)
摘要
Hierarchical microspheres of alpha-Ni(OH)(2), uniform in size and shape, have been synthesized through a facile surfactant-free hydrothermal route. Experimental parameters such as reaction time, temperature and reactant concentration were systematically optimized to produce monodispersed particles. SEM analysis confirmed that the particles synthesized from a recipe containing 2.65 x 10(-2 )mol. L-1 nickel chloride and 5.6 x 10(-1 )mol. L-1 urea aged at 85 degrees C for 2 hours were uniform in size and morphology. HR-TEM results showed that the hierarchical microspheres are made up of thin sheet-like units. The crystal structure of the alpha-Ni(OH)(2) microspheres was investigated by XRD which showed (003) as the preferred orientation plane having 7.369 A interplanar spacing and crystallite size of 21 nm. The intercalation of CO3-2 and OCN- species was revealed by FT-IR spectroscopy. The average activation energy (41.23 KJ mol(-1)) for thermal-induced transformation reaction was determined based on the TG/DTA data recorded at three heating rates. The present green and facile route could be extended to synthesize monodispersed systems of other metal compounds.
更多查看译文
关键词
Monodispersed, nickel hydroxide, green synthesis, nanoparticles
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要