Structure and antibacterial activity of new layered perovskite compounds

被引：12
作者：
Tan Shao-zao [1 ]
Zhang Li-ling
Xia Liao-yuan
Liu Ying-liang
Li Du-xin
机构：
[1] Jinan Univ, Dept Chem, Guangzhou 510632, Peoples R China
[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2007年 / 17卷 / 02期
基金：
中国国家自然科学基金;
关键词：
layered perovskite compound; structure; antibacterial activity; ion-exchange;
D O I：
10.1016/S1003-6326(07)60081-8
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
New layered perovskite compounds, Ag(x)Na(2-x)La(2)Ti3O(10) (x=0.2, 0.3 and 0.5) were synthesized by an ion-exchange reaction of Na2La2Ti3O10] with AgNO3 solution and characterized by energy dispersive X-ray analysis(EDX), X-ray diffractometry(XRD), scanning electron microscopy(SEM) and X-ray photoelectron spectroscopy(XPS). The ion-exchange processes were optimized, and the antibacterial activity, light permanency and water-resistance were evaluated. Surprisedly, no significant changes in crystal structure of Na2La2Ti3O10 are found by the exchange of silver ions. The Ag0.3Na1.7La2Ti3O10 particles conglomerate obviously with irregular shape and size. Ag0.3Na1.7La2 Ti3O10, possessing the minimum inhibitory concentrations(MICs) against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) of 180 mg/L and 240 mg/L, has high antibacterial activity, good light permanency and water-resistance. The ionic state silver in AgxNa2-xLa2Ti3O10 is the antibacterial active component.
引用
收藏
页码：257 / 261
页数：5
相关论文
共 18 条
  • [1] [Anonymous], 1992, HDB XRAY PHOTOELECTR
  • [2] SUPERCONDUCTIVITY IN ALKALINE-EARTH SUBSTITUTED LA2CUO4-Y
    BEDNORZ, JG
    MULLER, KA
    TAKASHIGE, M
    [J]. SCIENCE, 1987, 236 (4797) : 73 - 75
  • [3] Neutron diffraction and FT-Raman study of ion-exchangeable layered titanates and niobates
    Byeon, SH
    Nam, HJ
    [J]. CHEMISTRY OF MATERIALS, 2000, 12 (06) : 1771 - 1778
  • [4] SYNTHESIS OF BULK SUPERCONDUCTING YBA2CU4O8 AT ONE ATMOSPHERE OXYGEN-PRESSURE
    CAVA, RJ
    KRAJEWSKI, JJ
    PECK, WF
    BATLOGG, B
    RUPP, LW
    FLEMING, RM
    JAMES, ACWP
    MARSH, P
    [J]. NATURE, 1989, 338 (6213) : 328 - 330
  • [5] A NOVEL SERIES OF PHOTOCATALYSTS WITH AN ION-EXCHANGEABLE LAYERED STRUCTURE OF NIOBATE
    DOMEN, K
    YOSHIMURA, J
    SEKINE, T
    TANAKA, A
    ONISHI, T
    [J]. CATALYSIS LETTERS, 1990, 4 (4-6) : 339 - 343
  • [6] GARZA MR, 2000, MICROPOR MESOPOR MAT, V39, P431
  • [7] Transformations of Ruddlesden-Popper oxides to new layered perovskite oxides by metathesis reactions
    Gopalakrishnan, J
    Sivakumar, T
    Ramesha, K
    Thangadurai, V
    Subbanna, GN
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (26) : 6237 - 6241
  • [8] A2LN2TI3O10 (A = K OR RB, LN = LA OR RARE-EARTH) - A NEW SERIES OF LAYERED PEROVSKITES EXHIBITING ION-EXCHANGE
    GOPALAKRISHNAN, J
    BHAT, V
    [J]. INORGANIC CHEMISTRY, 1987, 26 (26) : 4299 - 4301
  • [9] Preparation of K2La2Ti3O10 by polymerized complex method and photocatalytic decomposition of water
    Ikeda, S
    Hara, M
    Kondo, JN
    Domen, K
    Takahashi, H
    Okubo, T
    Kakihana, M
    [J]. CHEMISTRY OF MATERIALS, 1998, 10 (01) : 72 - 77
  • [10] Preparation and antibacterial effects of Ag-SiO2 thin films by sol-gel method
    Jeon, HJ
    Yi, SC
    Oh, SG
    [J]. BIOMATERIALS, 2003, 24 (27) : 4921 - 4928
12