Controlled synthesis and optical properties of 1D frog egg-like Mn(IO3)2/MnO2 composite nanostructures with ultra-high aspect ratio

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 187; pp. 385 - 390
• Main Authors: Song, Limin, Zhang, Shujuan, Wu, Xiaoqing, Wei, Qingwu
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 01.04.2012; Elsevier
• Subjects: Applied sciences; Chemical engineering; Exact sciences and technology; frogs; Hydrothermal method; Mn(IO3)2/MnO2 micro and nanostructures; nanomaterials; optical properties; temperature; Tunable shapes; X-radiation; Tunable shapes; Hydrothermal method; Mn(IO3)2/MnO2 micro and nanostructures; Mn(IO; ); Plant leaf; Nanostructure; micro and nanostructures; Aspect ratio; Composite material; Powder; Operating conditions; MnO; Ultraviolet radiation; Three dimensional structure; Morphology; Optical properties; Growth mechanism
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2012.01.131

► The 1D frog egg-like Mn(IO3)2/MnO2 nanostructures has been prepared successfully by a simple method. ► Tunable shapes, including several three-dimensional structures (grass-, leaf-, and rose-like) have also been prepared. ► The growth mechanisms of these nanostructures are also surveyed. The one-dimensional (1D) frog egg-like Mn(IO3)2/MnO2 nanostructures with ultra-high aspect ratio are prepared by reaction of MnCl2·4H2O with KIO3 using a mild hydrothermal method. Tunable shapes, including several three-dimensional structures (grass-, leaf-, and rose-like), can also be obtained by altering experimental conditions. The X-ray powder diffraction (XRD) and energy-dispersive X-ray (EDS) analysis indicate that the products are under a mixed Mn(IO3)2/MnO2 phase. The morphology of the products can be controlled by altering the concentration, reaction time, and temperature. The growth mechanism of the nanostructures is proposed and discussed in detail. The optical properties of the 1D frog egg-like nanostructures are also examined using UV–Vis and photoluminescence (PL) spectrum.