Facile Size-Controllable Synthesis of Colorful Quasi-Cubic α-Fe2O3Materials from Nanoscale to Microscale and Their Properties Related to the Size Effect

Autor:	Yun Wu, Lin Guo, Guang-Sheng Wang, Yun-Zhao Wei, Shuai He, Mao-Sheng Cao, Jia-Wei Wang
Rok vydání:	2013
Předmět:	Nanostructure Aqueous solution Materials science Particle Hydrothermal synthesis Nanotechnology General Chemistry Nanoscopic scale Hydrothermal circulation Microscale chemistry Nanomaterials
Zdroj:	ChemPlusChem. 78:875-883
ISSN:	2192-6506
DOI:	10.1002/cplu.201300136
Popis:	A facile and environmentally friendly hydrothermal approach has been employed to synthesize size-controllable quasi-cubic α-Fe2 O3 nanocrystals by using an aqueous solution of FeCl3 without any alkaline materials and stabilizing agent. The as-prepared products were carefully characterized and the growth mechanism is also discussed. This hydrothermal synthesis of such quasi-cubic structures implies a simple and low-cost route to prepare monodisperse nanomaterials on a large scale. The size-controllable synthesis of α-Fe2 O3 is the first achieved successfully from 80 nm to 2 μm with constant structures. The synthesized α-Fe2 O3 materials have different optical properties and stabilities in water, which are caused by the change of their band-gap energy and specific surface areas. Finally, the dielectric properties of synthesized α-Fe2 O3 cubes were also investigated, and the differences caused by the particle sizes are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4b3b875bc98beeca6a1e310bc057ccd2 https://doi.org/10.1002/cplu.201300136 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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