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学科主题: 物理化学
题名: Sb-121 Mössbauer Spectra of M-doped Antimonic Acid (M = Ta, Nb, Bi and Y) Fine Nanoparticles Prepared by Soft Chemical Solution Process
作者: 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
出版日期: 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
通讯作者: 王军虎
部门归属: 十五室
主办者: Indian institute of Technology Kanpur
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
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/112586
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
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]. 见:International Conference on the Applications of the Mössbauer Effect (ICAME-2007). 印度. 2007-10-14.
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