SYNTHESIS AND STRUCTURE DETERMINATION OF K 2 Ti 6 O 13 NANOWIRES.doc

SYNTHESIS AND STRUCTURE DETERMINATION OF K2Ti6O13 NANOWIRES
Ruihong WANG1, Bolu WANG2, Qing CHEN2 and Lian-Mao PENG2,1
1Beijing Laboratory of Electron Microscopy, Institute of Physics, . Box 603, Chinese Academy of Sciences, Beijing 10080, China
2Department of Electronics, Peking University, Beijing 100871, China
Nanoscale materials, such as nanotubes and nanowires, are among important advanced materials that are expected to exhibit unusually chemical and physical properties, which may be different from that of bulk materials. Among these nanoscale materials, titanate nanotubes and nanowires have many important applications in areas such as photo-catalyst, gas sensors, high energy cell and environmental purification[1-2]. Many methods have been developed to synthesize titanate whiskers[3], but typically the diameters of the products were in micron. In our previous work, titanate nanotubes and potassium titanate nanowires, both having diameter around 10nm, were synthesized using a simple one step hydrothermal reaction among TiO2 particles and alkali solution[4,5]. In this paper we report a essful synthesis of potassium titanate nanowires using hydrothermal reaction among layered Na2Ti3O7 and KOH solution.
K2Ti6O13 nanowires were prepared in the following way: layer structured Na2Ti3O7 powder was added into a 10M KOH aqueous solution. The specimen was statically heated