NiO nano-crystal powders with cubic structure were synthesized by molten salt method. The synthesized materials were characterized by XRD, TEM, N2 adsorption-desorption and TG, etc. Not only are the eminent characters...NiO nano-crystal powders with cubic structure were synthesized by molten salt method. The synthesized materials were characterized by XRD, TEM, N2 adsorption-desorption and TG, etc. Not only are the eminent characters of weak agglomeration, narrow distribution and fine crystalline configuration, but the average crystal sizes of synthesized NiO powders could be efficiently controlled from 10 nm to 100 nm by changing the calcination conditions, such as calcination temperature, calcination time, and proportion of molten salt KNO3. Molten salt method is technologically easy and cheap, for the production of NiO nano-crystal powders in industrial scale.展开更多
Nano-NiO particles were synthesized at room temperature via single-phase precipitation,using NiCl 2·6H 2O and NH 3·H 2O as the raw materials and H 2O as solvent.XRD,XRF and TEM analysis showed that the nano-...Nano-NiO particles were synthesized at room temperature via single-phase precipitation,using NiCl 2·6H 2O and NH 3·H 2O as the raw materials and H 2O as solvent.XRD,XRF and TEM analysis showed that the nano-NiO particles had cubic crystal structure,the purity was over 99 73% and the granularity about 9nm.The method has potential for further scale up application in industry.The key factor is how to control the chemical reaction in solution and competitive balance.展开更多
文摘NiO nano-crystal powders with cubic structure were synthesized by molten salt method. The synthesized materials were characterized by XRD, TEM, N2 adsorption-desorption and TG, etc. Not only are the eminent characters of weak agglomeration, narrow distribution and fine crystalline configuration, but the average crystal sizes of synthesized NiO powders could be efficiently controlled from 10 nm to 100 nm by changing the calcination conditions, such as calcination temperature, calcination time, and proportion of molten salt KNO3. Molten salt method is technologically easy and cheap, for the production of NiO nano-crystal powders in industrial scale.
文摘Nano-NiO particles were synthesized at room temperature via single-phase precipitation,using NiCl 2·6H 2O and NH 3·H 2O as the raw materials and H 2O as solvent.XRD,XRF and TEM analysis showed that the nano-NiO particles had cubic crystal structure,the purity was over 99 73% and the granularity about 9nm.The method has potential for further scale up application in industry.The key factor is how to control the chemical reaction in solution and competitive balance.
