Direct formation of single crystal VO_2(R) nanorods by one-step hydrothermal treatment

Shidong Ji; Yangang Zhao; Feng Zhang; Ping Jin

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Direct formation of single crystal VO_2(R) nanorods by one-step hydrothermal treatment

机译：通过一步水热处理直接形成单晶VO_2（R）纳米棒

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摘要

Pure phase VO_2(R) nanorods were directly synthesized via the reduction of V_2O_5 by oxalic acid during one-step hydrothermal treatment. The products were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, FT-IR and UV-vis spectroscopy. By adding a proper amount of H_2SO_4 as morphology control agent, monodispersed single crystal VO_2(R) nanorods were obtained from the hydrothermal solution for the first time at relatively lower temperature (260 ℃) and even shorter time (4 h). The prepared nanorods showed very excellent thermochromic property with narrower hysteresis and lower phase transformation temperature compared with bulk materials.

机译：在一步水热处理过程中，通过草酸将V_2O_5还原，可以直接合成纯相VO_2（R）纳米棒。通过X射线衍射，场发射扫描电子显微镜，透射电子显微镜，X射线光电子能谱，FT-IR和UV-可见光谱对产物进行表征。通过添加适量的H_2SO_4作为形貌控制剂，首次在相对较低的温度（260℃）和更短的时间（4 h）内从水热溶液中获得了单分散的单晶VO_2（R）纳米棒。与块状材料相比，所制备的纳米棒表现出非常优异的热致变色性能，具有较窄的磁滞和较低的相变温度。

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来源
《Journal of Crystal Growth》 |2010年第2期|282-286|共5页
作者
Shidong Ji; Yangang Zhao; Feng Zhang; Ping Jin;
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作者单位

Department of Scientific and Engineering Simulation, Nagoya Institute of Technology, Gokiso-Cho, Showa-ku, Nagoya 466-8555, Japan;

Department of Scientific and Engineering Simulation, Nagoya Institute of Technology, Gokiso-Cho, Showa-ku, Nagoya 466-8555, Japan;

Department of Scientific and Engineering Simulation, Nagoya Institute of Technology, Gokiso-Cho, Showa-ku, Nagoya 466-8555, Japan;

National Institute of Advanced Industrial Science and Technology (AIST), Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
A1. Crystal morphology; A2. Hydrothermal crystal growth; B1. Vanadium dioxide nanorods; B2. Optical materials;

机译：A1。晶体形态A2。水热晶体生长;B1。二氧化钒纳米棒;B2。光学材料;

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Direct formation of single crystal VO_2(R) nanorods by one-step hydrothermal treatment

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