【摘要】 采用室温固相反应法合成了 4种通式为H3 MPMo10 V2 O40 ·xH2 O(M =Co2 + 、Ni2 + 、Cu2 + 、Zn2 + )的过渡金属磷钼钒酸盐纳米微粒。通过IR、UV、XRD、TEM、TG DTA、TPR等测试手段对其结构、颗粒大小、热稳定性以及表面性能进行了表征。结果表明 ,4种多金属氧酸盐皆为Keggin结构 ,晶粒尺寸约为 32～ 4 2nm。形成纳米微粒后 ,盐的热稳定性下降 ,表面活性明显增大。更多还原

【Abstract】 Four polyoxometalate particles H 3MPMo 10V 2O 40·xH 2O(M=Co 2+,Ni 2+,Cu 2+,Zn 2+) were synthesized by solid-state reaction at room temperature. Their structures, particle sizes, thermal properties and surface properties were investigated by IR, UV, XRD, TEM, TG-DTA and TPR techniques. The results show that these four polyoxometate particles have Keggin structure with size being 32～42 nm. The thermal stability of the polyoxometalates appeared decreased, but surface activity increased significantly, when they are in nanoparticles form.更多还原