Facile Size‐Controllable Synthesis of Colorful Quasi‐Cubic α‐Fe2O3 Materials from Nanoscale to Microscale and Their Properties Related to the Size Effect. Issue 8 (28th June 2013)

• Record Type: Journal Article
• Authors: He, Shuai; Wang, Guang‐Sheng; Wang, Jia‐Wei; Wei, Yun‐Zhao; Wu, Yun; Guo, Lin; Cao, Mao‐Sheng
• Is Part Of: ChemPlusChem. Volume 78:Issue 8(2013:Aug.)
• Page Start: 875
• Page End: 883
• Publication Date: 2013-06-28
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201300136
• Languages: English
• ISSNs: 2192-6506

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A facile and environmentally friendly hydrothermal approach has been employed to synthesize size‐controllable quasi‐cubic α‐Fe₂O₃ 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‐Fe₂O₃ is the first achieved successfully from 80 nm to 2 μm with constant structures. The synthesized α‐Fe₂O₃ 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‐Fe₂O₃ cubes were also investigated, and the differences caused by the particle sizes are discussed.</p> </abstract>