tailieunhanh - Báo cáo hóa học: " Lactobacillus assisted synthesis of titanium nanoparticles"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Lactobacillus assisted synthesis of titanium nanoparticles | Nanoscale Res Lett 2007 2 248-250 DOI s11671-007-9060-x NANO PERSPECTIVES Lactobacillus assisted synthesis of titanium nanoparticles K. Prasad Anal K. Jha A. R. Kulkarni Received 9 April 2007 Accepted 17 April 2007 Published online 19 May 2007 to the authors 2007 Abstract An eco-friendly lactobacillus sp. microbe assisted synthesis of titanium nanoparticles is reported. The synthesis is performed at room temperature. X-ray and transmission electron microscopy analyses are performed to ascertain the formation of Ti nanoparticles. Individual nanoparticles as well as a number of aggregates almost spherical in shape having a size of 40-60 nm are found. Keywords Nano titanium Nanoparticles Lactobacillus sp. Eco-friendly Introduction In recent years materials with nano-sized dimension have attracted considerable attention of the researchers throughout the globe. In modern nano science and technology the interaction between inorganic nanoparticles and biological structures are one of the most exciting areas of research. Also taking into consideration the environmental health and social aspects there is a need to develop an eco-friendly approach for nanomaterials synthesis that should not use toxic chemicals in the synthesis protocol. K. Prasad El University Department of Physics . Bhagalpur University Bhagalpur 812 007 India e-mail k_prasad65@ A. K. Jha University Department of Chemistry . Bhagalpur University Bhagalpur 812 007 India A. R. Kulkarni Department of Metallurgical Engineering and Materials Science Indian Institute of Technology Mumbai 400 076 India This is now well known that many organisms can produce inorganic materials either intra- or extracellularly 1 . Bacteria being prokaryotes have survived the test of time in enriching ions 2 synthesizing magnetite nanoparticles 1-3 reducing Ag into metal particles forming nanoparticles 4 5 and in generation of cermets 6 . The recent discovery of the bio-synthesis 6 7 of .