Báo cáo hóa học: " Shape-Controlled Synthesis of ZnS Nanostructures: A Simple and Rapid Method for One-Dimensional Materials by Plasma"

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: Research Shape-Controlled Synthesis of ZnS Nanostructures: A Simple and Rapid Method for One-Dimensional Materials by Plasma | Nanoscale Res Lett 2009 4 1047-1053 DOI s11671-009-9358-y NANO EXPRESS Shape-Controlled Synthesis of ZnS Nanostructures A Simple and Rapid Method for One-Dimensional Materials by Plasma Hu Peng Bai Liuyang Yu Lingjie Li Jinlin Yuan Fangli Chen Yunfa Received 17 March 2009 Accepted 24 May 2009 Published online 4 June 2009 to the authors 2009 Abstract In this paper ZnS one-dimensional 1D nanostructures including tetrapods nanorods nanobelts and nanoslices were selectively synthesized by using RF thermal plasma in a wall-free way. The feeding rate and the cooling flow rate were the critical experimental parameters for defining the morphology of the final products. The detailed structures of synthesized ZnS nanostructures were studied through transmission electron microscope X-ray diffraction and high-resolution transmission electron microscope. A collision-controlled growth mechanism was proposed to explain the growth process that occurred exclusively in the gas current by a flowing way and the whole process was completed in several seconds. In conclusion the present synthetic route provides a facile way to synthesize ZnS and other hexagonal-structured 1D nanostructures in a rapid and scalable way. Keywords Zinc sulphide 1D nanocrystal Thermal plasma Introduction In the past decade considerable effort has been paid on the preparation of 1D nanostructures such as nanorods nanowires nanobelts and nanotubes due to their potential application as building blocks for constructing a range of electronic and photonic nanodevices such as nanolasers H. Peng B. Liuyang Y. Lingjie L. Jinlin Y. Fangli El C. Yunfa State Key Laboratory of Multi-phase Complex System Institute of Process Engineering Chinese Academy of Sciences 100190 Beijing China e-mail flyuan@ nanosensors field-effect transistors and nanocantilevers etc. 1-8 . Among these materials 1D sulphide nanostructures have attracted great interest due to their sizes and morphology-related properties and .

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