摘要
采用气相扩渗稀土法,以取代型杂多酸盐K1[7Pb(CuW11O39)2]·30H2O为前躯体,制备了K0.5WO3钨青铜,利用IR、XRD、TG-DTA、XPS等手段对扩渗前后的物质进行了结构表征,结果表明前躯体的笼型Keggin结构已被破坏,扩渗后的主要产物是K0.5WO3。同时用四探针法和交流阻抗谱测试了扩渗前后物质的电导率,扩渗后样品的电导率σ=1.07×10-3s·cm-1,有望可作为固体电介质材料。
Tungsten bronze K0.5WO3 was synthesized by rare earth co-permeation method using K17 [Pb （CuW11O39）2] .30H2O as the precursor. The product is characterized by infrared spectrum （IR）, X-ray diffraction （XRD）, TG-DTA, and X-ray photoelectron spectroscopy （XPS）, the results showed that the Keggin cage struc- ture is destroyed. K0.5WO3 is the main component of the product permeated. Conductivity of compounds before and after permeation was investigated by four-electrode method and impedance spectra. The conductivity of the permeated sample is 1.07×10-3 s.cm-1, The tungsten bronze K0.5WO3 can become one of the potential candidates for use in solid electrolyte conducting materials.
出处
《化学工程师》
CAS
2010年第6期60-63,共4页
Chemical Engineer
关键词
钨青铜
稀土气相扩渗
杂多酸盐
导电性
Tungsten bronze
rare earth diffused permeation
heterpolyoxometalate
conductivity
