高等学校化学学报

高等学校化学学报

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具有3个次级晶格结构的钛酸盐晶体[Ni(OH)1.115(H2O)0.885]1.22(Ti1.73O4)·1.65H2O的合成

徐跃华1, 姜海英1, 付爽1, 李吉学1, 中山则昭2, 王丹3, 徐家宁1, 宋天佑1, 冯守华1
  

    1. 吉林大学化学学院, 无机合成与制备化学国家重点实验室, 长春 130012;
    2. 日本山口大学工学部, 日本宇部755-8611;
    3. 中国科学院过程研究所, 北京100080
  • 收稿日期:2008-04-28 修回日期:1900-01-01 出版日期:2009-03-10 发布日期:2009-03-10
  • 通讯作者: 徐跃华

Novel Complicated Titanate Consisted of Three Sublattices

XU Yue-Hua1*, JIANG Hai-Ying1, FU Shuang1, LI Ji-Xue1, NAKAYAMA Noriaki2, WANG Dan3, XU Jia-Ning1, SONG Tian-You1, FENG Shou-Hua1
  

    1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China;
    2. Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Ube 755-8611, Japan;
    3. Institute of Proress Engineering, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2008-04-28 Revised:1900-01-01 Online:2009-03-10 Published:2009-03-10
  • Contact: XU Yue-Hua

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摘要：

以K0.81Li0.27Ti1.73O4为前驱物, 通过水热方法合成出一种新型多晶格化合物[Ni(OH)1.115(H2O)0.885]1.22(Ti1.73O4)·1.65H2O. 应用XRD, IR, TG-DTA和TEM等测试方法对该化合物进行了表征. 结果表明, 在该化合物中, TiO2层和Ni(OH)2层沿c方向交替堆积, 分别形成3个次级晶格. 其中TiO2次级晶格属于正交晶系, 其可能的空间群是Pmmm, 晶格参数a=0.3875 nm, b=0.2976 nm, c=2.288 nm和α=β=γ=90°. 另外2个Ni(OH)2次级晶格具有相同的大小和对称性, 晶格参数a=b=0.3140 nm, c=2.288 nm, α=β=90°, γ=120°. TiO2次级晶格和Ni(OH)2次级晶格在ab平面二维方向上不匹配.

关键词: 多晶格晶体, 不匹配结构, 不匹配层状化合物, 钛酸盐, 氢氧化镍

Abstract: A novel multisublattice compound, [Ni(OH)1.115(H2O)0.885]1.22(Ti1.73O4)·1.65H2O, was hydrothermally synthesized with K0.81Li0.27Ti1.73O4 as the precursor. This compound was characterized by XRD, IR, TG-DTA and TEM. In this compound, the TiO2 layers and Ni(OH)2 layers alternately stack together along the c direction, and three sublattices were formed. One is TiO2 sublattice, which is orthorhombic with possible space group Pmmm, the lattice parameters are a=0.3875 nm, b=0.2976 nm, c=2.288 nm and α=β=γ=90°. The other two are Ni(OH)2 sublattices which have the same dimensions and symmetry, the lattice parameters are a=b=0.3140 nm, c=2.288 nm, α=β=90° and γ=120°. TiO2 sublattice and Ni(OH)2 sublattice are incommensurate in two dimensions in the ab plane. This result confirms that it is possible to design and synthesize more complicated misfit layered compounds based on the layered compounds by the soft chemical method.

Key words: Multisublattice compound, Incommensurate structure, Misfit-layered compound, Titanate, Ni(OH)2

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