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báo cáo hóa học:" Template-Assisted Synthesis and Characterization of Passivated Nickel 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: Template-Assisted Synthesis and Characterization of Passivated Nickel Nanoparticles | Nanoscale Res Lett 2010 5 889-897 DOI 10.1007 s11671-010-9580-7 NANO EXPRESS Template-Assisted Synthesis and Characterization of Passivated Nickel Nanoparticles E. Veena Gopalan K. A. Malini G. Santhoshkumar T. N. Narayanan P. A. Joy I. A. Al-Omari D. Sakthi Kumar Yasuhiko Yoshida M. R. Anantharaman Received 30 December 2009 Accepted 15 March 2010 Published online 2 April 2010 The Author s 2010. This article is published with open access at Springerlink.com Abstract Potential applications of nickel nanoparticles demand the synthesis of self-protected nickel nanoparticles by different synthesis techniques. A novel and simple technique for the synthesis of self-protected nickel nanoparticles is realized by the inter-matrix synthesis of nickel nanoparticles by cation exchange reduction in two types of resins. Two different polymer templates namely strongly acidic cation exchange resins and weakly acidic cation exchange resins provided with cation exchange sites which can anchor metal cations by the ion exchange process are used. The nickel ions which are held at the cation exchange sites by ion fixation can be subsequently reduced to metal nanoparticles by using sodium borohydride as the reducing E. Veena Gopalan T. N. Narayanan M. R. Anantharaman Department of Physics Cochin University of Science and Technology Cochin 682 022 Kerala India e-mail mraiyer@gmail.com K. A. Malini Department of Physics Vimala College Thrissur 680 009 Kerala India G. Santhoshkumar Department of Physics Government Arts College Thiruvananthapuram Kerala India P. A. Joy Physical Chemistry Division National Chemical Laboratory Pune 411 008 India I. A. Al-Omari Department of Physics College of Sciences Sultan Qaboos University P O Box 36 PC 123 Muscat Sultanate of Oman D. Sakthi Kumar Y. Yoshida Bio-Nano Electronics Research Centre Department of Applied Chemistry Toyo University Kawagoe Saitama 350-8585 Japan agent. The composites are cycled repeating the loading reduction cycle involved in the