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Fabrication and Characterization of Micro-Pattern Dandelion-like and Nanobelts of β-SrV2O6 via Hydrothermal Process
Zi-an Li, Huai-xin Yang*, Huan-fang Tian, Ying Zhang, Jian-qi Li
Author NameAffiliationE-mail
Zi-an Li Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China  
Huai-xin Yang* Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China hxyang@blem.ac.cn 
Huan-fang Tian Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China  
Ying Zhang Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China  
Jian-qi Li Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China  
Abstract:
"Dandelion-like micro-crystallites and long belt-like nanostructures of Sr-V-O materials were synthesized under mild hydrothermal reaction conditions in the presence of mineralizer adipic acid at 220 oC for 60 h and 180 oC for 60 h, respectively. Scanning electron microscopy measurements show that the Sr-V-O micro-crystallites in general consist of well-arranged microrods with the average length of a few hundred micrometers and diameters ranging from 1 1m to 5 1m. The long belt-like nanostructures around 100 nm in width exhibit visible twist and waving in shapes, showing high flexibility in nature. Powder X-ray diffraction and electron diffraction measurements both revealed that these micro-/nanometer materials have an orthorhombic structure with the lattice parameter a=9.694 ?, b=3.687 ?, and c=12.570 ? (space group of Pnma) as reported for fi-SrV2O6 phase. The electron diffraction patterns also indicate that the micro-/nanometer fi-SrV2O6 crystallites preferentially grow along the h010i crystallographic direction. The effects of the hydrothermal treating temperature and chemical compositions ratio of Sr to V on the morphologies of the final products are extensively investigated. A possible crystallite growth mechanism for the micro-pattern formation is proposed based on the systematic analysis of the experiental results."
Key words:  Micro-patterning, Hydrothermal crystal growth, Strontium compound, Vanadate
FundProject:
水热法制备蒲公英状微晶和纳米带状β-SrV2O6及微结构表征
李子安,杨怀馨*,田焕芳,张颖,李建奇
摘要:
"利用Sr(NO3)2和V2O5作为反应前驱物, 已二酸作为矿化剂,在水热法反应条件下成功制备了微米尺寸蒲公英状及纳米尺寸的纳米带状β-SrV2O6晶微体. 通过粉末X衍射和电子显微镜的研究分析,结果表明所得的反应生成物属于正交晶系,其晶格常数为a=9.694 ?,b=3.687 ?,c=12.570 ? (空间群Pnma). 电子显微结果表明蒲公英状的微晶是揭示许多棒状微晶呈球型放射状构成的图案,而纳米带状的β-SrV2O6则呈现显示良好的挠性. 两者的微晶体生长方向沿h010i晶轴方向. 详细探讨了水
关键词:  微结构图案,水热法制备,钒酸盐
DOI:10.1088/1674-0068/20/06/727-732
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