Gao Tao, Fjellvåg Helmer, Norby Poul
Department of Chemistry, Centre for Materials Science and Nanotechnology, University of Oslo, N-0315 Oslo, Norway.
Anal Chim Acta. 2009 Aug 26;648(2):235-9. doi: 10.1016/j.aca.2009.06.059. Epub 2009 Jul 1.
In this comment to a recent paper [Anal. Chim. Acta 585 (2007) 241-245], we report a comparison study on Mn oxide-related compounds with different crystallographic forms, which distinguish between beta-MnO(2) and alpha-MnO(2) type materials via Raman scattering (RS) spectroscopy. The tetragonal rutile-type beta-MnO(2) is characterized by a RS band at approximately 667cm(-1) of symmetry A(1g), whereas the alpha-MnO(2) type materials feature two main RS contributions at about 574 and 634cm(-1), belonging to A(g) spectroscopic species of a tetragonal hollandite-type framework. These data represent a clear signature for identifying beta-MnO(2) and alpha-MnO(2) type materials via RS spectroscopy.
在对最近一篇论文[《分析化学学报》585 (2007) 241 - 245]的这篇评论中，我们报告了一项关于具有不同晶体结构形式的锰氧化物相关化合物的比较研究，该研究通过拉曼散射（RS）光谱区分β - MnO₂和α - MnO₂型材料。四方金红石型β - MnO₂的特征是在约667cm⁻¹处有一个对称A₁g的RS带，而α - MnO₂型材料在约574和634cm⁻¹处有两个主要的RS贡献，属于四方钡硬锰矿型结构的A₉光谱种类。这些数据是通过RS光谱识别β - MnO₂和α - MnO₂型材料的明确特征。
