Controllable Synthesis of alpha-MnO2 Nanostructures and Phase Transformation to beta-MnO2 Microcrystals by Hydrothermal Crystallization

	Controllable Synthesis of alpha-MnO2 Nanostructures and Phase Transformation to beta-MnO2 Microcrystals by Hydrothermal Crystallization
	Ma YW(马衍伟)
刊名	JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
	2010
通讯作者	马衍伟
中文摘要	Single-crystalline alpha-MnO2 nanowires and beta-MnO2 microcrystals have been controllably synthesized by a common hydrothermal method based on the redox reaction between MnO4 and Cr3+. The products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and high-resolution transmission electron microscopy (HRTEM). The effects of various experimental conditions on the morphologies and crystalline structures of the final products were investigated. It was found that alpha-MnO2 nanowires were converted to beta-MnO2 microcrystals by prolonging the hydrothermal treatment under a dissolution-recrystallization process. Higher hydrothermal temperature and lower pH value were beneficial for the phase transformation from alpha-MnO2 to beta-MnO2.
学科主题	材料合成与加工工艺
收录类别	1
公开日期	2010-09-29
附注	Single-crystalline alpha-MnO2 nanowires and beta-MnO2 microcrystals have been controllably synthesized by a common hydrothermal method based on the redox reaction between MnO4 and Cr3+. The products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and high-resolution transmission electron microscopy (HRTEM). The effects of various experimental conditions on the morphologies and crystalline structures of the final products were investigated. It was found that alpha-MnO2 nanowires were converted to beta-MnO2 microcrystals by prolonging the hydrothermal treatment under a dissolution-recrystallization process. Higher hydrothermal temperature and lower pH value were beneficial for the phase transformation from alpha-MnO2 to beta-MnO2.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/413]
专题	电工研究所_超导材料及强磁场科学研究组_超导材料及强磁场科学研究组_期刊论文
推荐引用方式 GB/T 7714	Ma YW. Controllable Synthesis of alpha-MnO2 Nanostructures and Phase Transformation to beta-MnO2 Microcrystals by Hydrothermal Crystallization[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2010.
APA	马衍伟.(2010).Controllable Synthesis of alpha-MnO2 Nanostructures and Phase Transformation to beta-MnO2 Microcrystals by Hydrothermal Crystallization.JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY.
MLA	马衍伟."Controllable Synthesis of alpha-MnO2 Nanostructures and Phase Transformation to beta-MnO2 Microcrystals by Hydrothermal Crystallization".JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY (2010).