tailieunhanh - Báo cáo hóa học: " Synthesis of Indium Nanowires by Galvanic Displacement and Their Optical Properties"

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: Synthesis of Indium Nanowires by Galvanic Displacement and Their Optical Properties | Nanoscale Res Lett 2009 4 47-53 DOI s11671-008-9201-x NANO EXPRESS Synthesis of Indium Nanowires by Galvanic Displacement and Their Optical Properties Haohua Li Chaolun Liang Meng Liu Kuan Zhong Yexiang Tong Peng Liu Greg A. Hope Received 10 August 2008 Accepted 22 October 2008 Published online 18 November 2008 to the authors 2008 Abstract Single crystalline indium nanowires were prepared on Zn substrate which had been treated in concentrated sulphuric acid by galvanic displacement in the mol L-1 In2 SO4 mol L-1 mol L-1 mol L-1 citric acid aqueous solution. The typical diameter of indium nanowires is 30 nm and most of the nanowires are over 30 m in length. XRD HRTEM SAED and structural simulation clearly demonstrate that indium nanowires are single-crystalline with the tetragonal structure the growth direction of the nanowires is along 100 facet. The UV-Vis absorption spectra showed that indium nanowires display typical transverse resonance of SPR properties. The surfactant SDS and the pretreatment of Zn substrate play an important role in the growth process. The mechanism of indium nanowires growth is the synergic effect of treated Zn substrate hard template and SDS soft template . H. Li M. Liu K. Zhong Y. Tong P. Liu School of Chemistry and Chemical Engineering MOE of Key Laboratory of Bioinorganic and Synthetic Chemistry Sun Yat-Sen University Guangzhou 510275 China e-mail cesdhx@ P. Liu e-mail pengliupd@ H. Li M. Liu K. Zhong Y. Tong P. Liu Institute of Optoelectronic and Functional Composite Material Sun Yat-Sen University Guangzhou 510275 China C. Liang Instrumental Analysis Research Center Sun Yat-Sen University Guangzhou 510275 China G. A. Hope School of Science Griffith University Nathan Qld 4111 Australia Keywords Indium Nanowire Galvanic displacement Surface plasmon resonance Soft template Introduction The interaction of light with metal nanoparticles and nanowires as opposed to their .