tailieunhanh - Báo cáo hóa học: " Synthesis of Novel Flower-Like Zn(OH)F via a MicrowaveAssisted Ionic Liquid Route and Transformation into Nanoporous ZnO by Heat Treatment"

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 Novel Flower-Like Zn(OH)F via a MicrowaveAssisted Ionic Liquid Route and Transformation into Nanoporous ZnO by Heat Treatment | Nanoscale Res Lett 2009 4 1512-1516 DOI s11671-009-9428-1 NANO EXPRESS Synthesis of Novel Flower-Like Zn OH F via a Microwave-Assisted Ionic Liquid Route and Transformation into Nanoporous ZnO by Heat Treatment Jia-kui Song Ming-bo Zheng Zhen-jiang Yang Hui-qin Chen Hai-yan Wang Jin-song Liu Guang-bin Ji Hai-qian Zhang Jie-ming Cao Received 15 June 2009 Accepted 19 August 2009 Published online 16 September 2009 to the authors 2009 Abstract Zinc hydroxide fluoride Zn OH F with novel flower-like morphology has been prepared via a microwave-assisted ionic liquid route. The flower-like Zn OH F particle has six petals and every petal is composed of lots of acicular nano-structure. Nanoporous ZnO is obtained by thermal decomposition of as-prepared Zn OH F in air and the flower-like morphology is well retained. In the process of synthesis ionic liquid 1-Butyl-3-methylimidazolium tetrafluoroborate is used as both the reactant and the template. Keywords Ionic liquid Microwave Zn OH F Nanoporous ZnO Flower-like Introduction The conventional inorganic synthetic procedures usually demand long reaction time high temperature and toxic solvents. Different from the traditional solvents ionic liquids are potential green solvents with many advantages such as negligible vapor pressure low interface tension supra-molecular solvents and microwave absorbing ability 1 2 . Because of these excellent performances ionic liquids can be the new all in one solvents which are combination of solvent template and reactant 3 . Compared with the traditional heating methods microwave irradiation can J. Song M. Zheng Z. Yang H. Chen H. Wang J. Liu G. Ji H. Zhang J. Cao H Nanomaterials Research Institute College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China e-mail jmcao@ obviously shorten the heating time. Moreover microwave irradiation also has many other advantages including volumetric heating selectivity fast kinetics