材料科学
黑钨矿
钨酸盐
微晶
熔盐
单斜晶系
透射电子显微镜
化学工程
纳米颗粒
钨酸钠
结晶
煅烧
紫外线
可见光谱
分析化学(期刊)
盐(化学)
纳米技术
钨
结晶学
晶体结构
冶金
化学
催化作用
有机化学
光电子学
工程类
作者
Zuwei Song,Junfeng Ma,Hui Sun,Wei Wang,Yong Sun,Lijuan Sun,Zhengsen Liu,Chang Gao
标识
DOI:10.1016/j.ceramint.2009.03.010
摘要
Nickel tungstate (NiWO4) nano-particles were successfully synthesized at low temperatures by a molten salt method, and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and ultraviolet visible spectra techniques (UV–vis), respectively. The effects of calcining temperature and salt quantity on the crystallization and development of NiWO4 crystallites were studied. Experimental results showed that the well-crystallized NiWO4 nano-particles with about 30 nm in diameter could be prepared at 270 °C with 6:1 mass ratio of the salt to NiWO4 precursor. XRD analysis confirmed that the product was a pure monoclinic phase of NiWO4 with wolframite structure. UV–vis spectrum revealed that NiWO4 nano-particles had good light absorption properties in both ultraviolet and visible light region.
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