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学科主题物理化学
Sb-121 Mössbauer Spectra of M-doped Antimonic Acid (M = Ta, Nb, Bi and Y) Fine Nanoparticles Prepared by Soft Chemical Solution Process
Wang JH(王军虎); Gao QZ(高桥正); 竹田满洲雄
会议名称International Conference on the Applications of the Mössbauer Effect (ICAME-2007)
会议日期2007-10-14
2007-10-14
会议地点印度
其他题名用化学溶液法制备的金属离子M (M = Ta, Nb,Bi and Y)掺杂的锑酸精细纳米微粒的Sb-121穆斯堡尔谱
页码T1-P63/2
部门归属十五室
主办者Indian institute of Technology Kanpur
英文摘要Sb-121 Mössbauer spectroscopic studies on the pyrochlore-type M-doped antimonic acids (M = Nb, Ta, Bi and Y) were carried out at 12 K in order to determine the valence state of Sb and try to find more useful information for making clear the mechanism of the photocatalytic property and the proton conductivity in detail. All of the M-doped antimonic acids were fine nanoparticles prepared by a simple soft chemical solution process. Among of them, the Ta-containing material was firstly reported. The Sb-121 Mössbauer results indicated that all of the Sb were in Sb5+ in HSb1-xMxO3nH2O (M = Ta and Nb) which Sb was partially substituted by M, however, small amount of Sb were confirmed in Sb3+ in H1-3xMxSbO3nH2O (M = Bi and Y) which H was partially substituted by M. The amounts of Sb3+ in the Bi-containing material were clearly larger than that in the Y-containing material. The photocatalytic properties and the proton conductivities of the antimonic acids were discussed in relation to their Sb-121 Mössbauer parameters, especially the isomer shift and the quadrupole coupling constant. Ozawa等研究已经表明金属离子Nb, Bi和Y的掺杂对烧绿石结构的锑酸纳米微粒的质子导电性有明显地增强效果。王等的研究也已经表明只含+5价锑的烧绿石结构的锑酸纳米微粒对亚甲蓝色素在紫外光照射下有很高的脱色效果。本研究在接近液氦温度的12K观测了用化学溶液法制备的四种金属离子Nb, Ta,Bi和Y掺杂的烧绿石结构的锑酸纳米微粒的Sb-121穆斯堡尔谱,决定了四种材料中锑的价态。用获得的Sb-121穆斯堡尔谱参数对烧绿石结构的锑酸纳米微粒的质子导电性机理和光催化氧化分解有机物的机理做了探讨。
语种中文
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/112586
专题中国科学院大连化学物理研究所
通讯作者Wang JH(王军虎)
推荐引用方式
GB/T 7714
Wang JH,Gao QZ,竹田满洲雄. Sb-121 Mössbauer Spectra of M-doped Antimonic Acid (M = Ta, Nb, Bi and Y) Fine Nanoparticles Prepared by Soft Chemical Solution Process[C],2007:T1-P63/2.
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