Room-temperature biosynthesis of ferroelectric barium titanate nanoparticles

被引:199
作者
Bansal, Vipul
Poddar, Pankaj
Ahmad, Absar
Sastry, Murali
机构
[1] Natl Chem Lab, Nanosci Grp, Mat Chem Div, Pune 411008, Maharashtra, India
[2] Natl Chem Lab, Biochem Sci Div, Pune 411008, Maharashtra, India
关键词
D O I
10.1021/ja063011m
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The syntheses of inorganic materials by biological systems is characterized by processes that occur close to ambient temperatures, pressures, and neutral pH, as is exemplified by biosilicification and biomineralization processes in nature. Conversely, laboratory-based syntheses of oxide materials often require extremes of temperature and pressure. We have shown here the extracellular, room-temperature biosynthesis of 4-5 nm ternary oxide nanoparticles such as barium titanate (BT) using a fungus-mediated approach. The tetragonality as well as a lowered Curie transition temperature in sub-10 nm particles was established, and the ferroelectricity in these particles was shown using Kelvin probe microscopy.
引用
收藏
页码:11958 / 11963
页数:6
相关论文
共 44 条
  • [1] Fungus-mediated biosynthesis of silica and titania particles
    Bansal, V
    Rautaray, D
    Bharde, A
    Ahire, K
    Sanyal, A
    Ahmad, A
    Sastry, M
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (26) : 2583 - 2589
  • [2] Bioleaching of sand by the fungus Fusarium oxysporum as a means of producing extracellular silica nanoparticles
    Bansal, V
    Sanyal, A
    Rautaray, D
    Ahmad, A
    Sastry, M
    [J]. ADVANCED MATERIALS, 2005, 17 (07) : 889 - +
  • [3] Biosynthesis of zirconia nanoparticles using the fungus Fusarium oxysporum
    Bansal, V
    Rautaray, D
    Ahmad, A
    Sastry, M
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (22) : 3303 - 3305
  • [4] BAUER CL, 1988, SOLID STATE PHYS SOU
  • [5] EFFECT OF PARTICLE-SIZE ON THE ROOM-TEMPERATURE CRYSTAL-STRUCTURE OF BARIUM-TITANATE
    BEGG, BD
    VANCE, ER
    NOWOTNY, J
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1994, 77 (12) : 3186 - 3192
  • [6] The perovskite structure - a review of its role in ceramic science and technology
    Bhalla, AS
    Guo, RY
    Roy, R
    [J]. MATERIALS RESEARCH INNOVATIONS, 2000, 4 (01) : 3 - 26
  • [7] Extracellular biosynthesis of magnetite using fungi
    Bharde, A
    Rautaray, D
    Bansal, V
    Ahmad, A
    Sarkar, I
    Yusuf, SM
    Sanyal, M
    Sastry, M
    [J]. SMALL, 2006, 2 (01) : 135 - 141
  • [8] CHEMICAL ASPECTS OF SOLUTION ROUTES TO PEROVSKITE-PHASE MIXED-METAL OXIDES FROM METAL-ORGANIC PRECURSORS
    CHANDLER, CD
    ROGER, C
    HAMPDENSMITH, MJ
    [J]. CHEMICAL REVIEWS, 1993, 93 (03) : 1205 - 1241
  • [9] SIZE-INDUCED DIFFUSE PHASE-TRANSITION IN THE NANOCRYSTALLINE FERROELECTRIC PBTIO3
    CHATTOPADHYAY, S
    AYYUB, P
    PALKAR, VR
    MULTANI, M
    [J]. PHYSICAL REVIEW B, 1995, 52 (18): : 13177 - 13183
  • [10] Hydrothermal synthesis of barium titanate
    Chen, HJ
    Chen, YW
    [J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2003, 42 (03) : 473 - 483