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
  • [21] Lines M. E., 2001, PRINCIPLES APPL FERR
  • [22] ANAEROBIC PRODUCTION OF MAGNETITE BY A DISSIMILATORY IRON-REDUCING MICROORGANISM
    LOVLEY, DR
    STOLZ, JF
    NORD, GL
    PHILLIPS, EJP
    [J]. NATURE, 1987, 330 (6145) : 252 - 254
  • [23] Synthesis of tetragonal BaTiO3 by microwave heating and conventional heating
    Ma, Y
    Vileno, E
    Suib, SL
    Dutta, PK
    [J]. CHEMISTRY OF MATERIALS, 1997, 9 (12) : 3023 - 3031
  • [24] Mukherjee P, 2002, CHEMBIOCHEM, V3, P461, DOI 10.1002/1439-7633(20020503)3:5<461::AID-CBIC461>3.0.CO
  • [25] 2-X
  • [26] Unusual phase transitions in ferroelectric nanodisks and nanorods
    Naumov, II
    Bellaiche, L
    Fu, HX
    [J]. NATURE, 2004, 432 (7018) : 737 - 740
  • [27] Surface plasmon enhanced emission from dye doped polymer layers
    Neal, TD
    Okamoto, K
    Scherer, A
    [J]. OPTICS EXPRESS, 2005, 13 (14): : 5522 - 5527
  • [28] A general soft-chemistry route to perovskites and related materials:: Synthesis of BaTiO3, BaZrO3, and LiNbO3 nanoparticles
    Niederberger, M
    Pinna, N
    Polleux, J
    Antonietti, M
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (17) : 2270 - 2273
  • [29] Room temperature synthesis of ferroelectric barium titanate nanoparticles using peptide nanorings as templates
    Nuraje, N
    Su, K
    Haboosheh, A
    Samson, J
    Manning, EP
    Yang, NL
    Matsui, H
    [J]. ADVANCED MATERIALS, 2006, 18 (06) : 807 - +
  • [30] Bioinspired synthesis of new silica structures
    Patwardhan, SV
    Mukherjee, N
    Steinitz-Kannan, M
    Clarson, SJ
    [J]. CHEMICAL COMMUNICATIONS, 2003, (10) : 1122 - 1123