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
  • [31] The properties of ferroelectric films at small dimensions
    Shaw, TM
    Trolier-McKinstry, S
    McIntyre, PC
    [J]. ANNUAL REVIEW OF MATERIALS SCIENCE, 2000, 30 : 263 - 298
  • [32] Silicatein α:: Cathepsin L-like protein in sponge biosilica
    Shimizu, K
    Cha, J
    Stucky, GD
    Morse, DE
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1998, 95 (11) : 6234 - 6238
  • [33] HIGH-RESOLUTION X-RAY PHOTOEMISSION SPECTRUM OF VALENCE BANDS OF GOLD
    SHIRLEY, DA
    [J]. PHYSICAL REVIEW B, 1972, 5 (12): : 4709 - &
  • [34] Sihvola A., 2000, SUBSURF SENS TECH AP, V1, P393, DOI DOI 10.1023/A:1026511515005
  • [35] The crossover from a ferroelectric to a relaxor state in lead-free solid solutions
    Simon, A
    Ravez, J
    Maglione, M
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (06) : 963 - 970
  • [36] Grain size dependence of dielectric properties of ultrafine BaTiO3 prepared by a sol-crystal method
    Takeuchi, T
    Tabuchi, M
    Ado, K
    Honjo, K
    Nakamura, O
    Kageyama, H
    Suyama, Y
    Ohtori, N
    Nagasawa, M
    [J]. JOURNAL OF MATERIALS SCIENCE, 1997, 32 (15) : 4053 - 4060
  • [37] Critical size and anomalous lattice expansion in nanocrystalline BaTiO3 particles
    Tsunekawa, S
    Ito, S
    Mori, T
    Ishikawa, K
    Li, ZQ
    Kawazoe, Y
    [J]. PHYSICAL REVIEW B, 2000, 62 (05): : 3065 - 3070
  • [38] Single-crystalline barium titanate nanowires
    Urban, JJ
    Spanier, JE
    Lian, OY
    Yun, WS
    Park, H
    [J]. ADVANCED MATERIALS, 2003, 15 (05) : 423 - 426
  • [39] Sol-gel synthesis of nano-scaled BaTiO3, BaZrO3 and BaTi0.5Zr0.5O3 oxides via single-source alkoxide precursors and semi-alkoxide routes
    Veith, M
    Mathur, S
    Lecerf, N
    Huch, V
    Decker, T
    Beck, HP
    Eiser, W
    Haberkorn, R
    [J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2000, 17 (02) : 145 - 158
  • [40] Enhanced piezoelectric property of barium titanate single crystals with engineered domain configurations
    Wada, S
    Suzuki, S
    Noma, T
    Suzuki, T
    Osada, M
    Kakihana, M
    Park, SE
    Cross, LE
    Shrout, TR
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 1999, 38 (9B): : 5505 - 5511