Ferroelectric BaTiO3 nanoparticles: biosynthesis and characterization.

A new low-cost, green and reproducible Lactobacillus sp. assisted biosynthesis of BaTiO(3) nanoparticles is reported. X-ray and transmission electron microscopy analyses are performed to ascertain the formation of BaTiO(3) nanoparticles. The apparent crystallite size and lattice strain are estimated from Williamson-Hall approach. XRD analysis of the compound indicated the formation of a single-phase tetragonal structure. Individual nanoparticles as well as a few aggregate having the size of 20-80 nm are found. A possible involved mechanism for the biosynthesis of nano-BaTiO(3) has also been proposed in which ROS as well as partial pressure of gaseous hydrogen (rH(2)) of the culture solution seems to play an important role in the process. Remarkable enhancement in dielectric properties was observed in BaTiO(3)/polyvinylidene fluoride (PVDF) nanocomposite.

[1]  P. Dutta,et al.  Hydrothermal synthesis of tetragonal barium titanate (BaTiO3) , 1992 .

[2]  R. C. Fahey,et al.  Evolution of antioxidant mechanisms: Thiol-Dependent peroxidases and thioltransferase among procaryotes , 1989, Journal of Molecular Evolution.

[3]  A. K. Jha,et al.  A green low-cost biosynthesis of Sb2O3 nanoparticles , 2009 .

[4]  A. Kulkarni,et al.  Plant system: nature's nanofactory. , 2009, Colloids and surfaces. B, Biointerfaces.

[5]  X. Jiao,et al.  Solvothermal Synthesis and Characterization of Barium Titanate Powders , 2004 .

[6]  Hiroshi Kishi,et al.  Base-Metal Electrode-Multilayer Ceramic Capacitors: Past, Present and Future Perspectives , 2003 .

[7]  H. Knözinger,et al.  MECHANICAL AND THERMAL SPREADING OF ANTIMONY OXIDES ON THE TIO2 SURFACE : DISPERSION AND PROPERTIES OF SURFACE ANTIMONY OXIDE SPECIES , 1999 .

[8]  N. Shin,et al.  Synthesis of Tetragonal Barium Titanate Nanoparticles Via Alkoxide–Hydroxide Sol‐Precipitation: Effect of Water Addition , 2007 .

[9]  A. Kulkarni,et al.  Synthesis of TiO2 nanoparticles using microorganisms. , 2009, Colloids and surfaces. B, Biointerfaces.

[10]  A. van Dorsselaer,et al.  Roles of Thioredoxin Reductase during the Aerobic Life of Lactococcuslactis , 2005, Journal of bacteriology.

[11]  John Wang,et al.  Ultrafine Barium Titanate Powders via Microemulsion Processing Routes , 1999 .

[12]  A. K. Jha,et al.  Can microbes mediate nano-transformation? , 2010 .

[13]  A. Holmgren.  Thioredoxin and glutaredoxin systems , 1989 .

[14]  G. Klug,et al.  Thioredoxins in bacteria: functions in oxidative stress response and regulation of thioredoxin genes , 2006, Naturwissenschaften.

[15]  P. Seth,et al.  Effects of chromium on the immune system. , 2002, FEMS immunology and medical microbiology.

[16]  M. Penninckx,et al.  A short review on the role of glutathione in the response of yeasts to nutritional, environmental, and oxidative stresses. , 2000, Enzyme and microbial technology.

[17]  D. Paustenbach,et al.  Chromium (VI) at plausible drinking water concentrations is not genotoxic in the in vivo bone marrow micronucleus or liver unscheduled DNA synthesis assays , 1996, Environmental and molecular mutagenesis.

[18]  Y. Le Loir,et al.  Oxidative stress in Lactococcus lactis. , 2003, Genetics and molecular research : GMR.

[19]  I. Matsui.  Nanoparticles for Electronic Device Applications: A Brief Review , 2005 .

[20]  Prof Vikas Kumar,et al.  Biosynthesis of silver nanoparticles using Eclipta leaf , 2009, Biotechnology progress.

[21]  K. Hantke.  Iron and metal regulation in bacteria. , 2001, Current opinion in microbiology.

[22]  K. Prasad,et al.  Lactobacillusassisted synthesis of titanium nanoparticles , 2007, Nanoscale Research Letters.

[23]  J. Nièpce.  About the mechanism of the solid-way synthesis of barium metatitanate. Industrial consequences , 1990 .

[24]  J. Pirard,et al.  Synthesis of barium titanate by the sol-gel process , 1994 .

[25]  G. K. Williamson,et al.  X-ray line broadening from filed aluminium and wolfram , 1953 .

[26]  R. Schirmer,et al.  Substitution of the thioredoxin system for glutathione reductase in Drosophila melanogaster. , 2001, Science.

[27]  K. Prasad,et al.  Biosynthesis of Sb2O3 nanoparticles: a low-cost green approach. , 2009, Biotechnology journal.

[28]  S. Condon,et al.  Responses of lactic acid bacteria to oxygen , 1987 .

[29]  A. J. Moulson,et al.  Electroceramics: Materials, Properties, Applications , 1990 .

[30]  Vipul Bansal,et al.  Room-temperature biosynthesis of ferroelectric barium titanate nanoparticles. , 2006, Journal of the American Chemical Society.

[31]  Vincenzo Buscaglia,et al.  Synthesis of BaTiO3 Particles with Tailored Size by Precipitation from Aqueous Solutions , 2004 .

[32]  Debasis Bagchi,et al.  Chromium (VI)‐induced oxidative stress, apoptotic cell death and modulation of p53 tumor suppressor gene , 2001, Molecular and Cellular Biochemistry.

[33]  R. Waser,et al.  Progress in the Synthesis of Nanocrystalline BaTiO3 Powders for MLCC , 2005 .