Mn2O3纳米结构的简易合成与电化学性质(英文)  

Mn_2O_3 Nanomaterials: Facile Synthesis and Electrochemical Properties

作　　者：赵丹[1,2] 谭金山[1] 季倩倩[1,2] 张进涛 赵修松[1,2,3] 郭培志[1,2] 

机构地区：[1]青岛大学纤维新材料与现代纺织国家重点实验室培育基地多功能材料研究所,青岛266071 [2]青岛大学化学化工与环境学院,青岛266071 [3]Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576

出　　处：《无机化学学报》2010年第5期832-838,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20803037);山东省博士基金(No.2007BS04022);山东省自然科学基金(No.ZR2009BM013);泰山学者计划资助

摘　　要：用简易的室温或水热方法制备出不同形貌的MnCO3微结构。经600℃热处理后,室温制备MnCO3转变成Mn2O3胶体片,而水热制备MnCO3样品则形成多孔Mn2O3纳米结构。然而,室温制备MnCO3经120℃热处理后形成Mn2O3晶相。制备样品经过XRD和SEM表征表明,热处理MnCO3前驱物形成Mn2O3过程导致产物形貌与结构变化。其形成机理又通过TEM和FTIR进一步研究。Mn2O3纳米结构的电容性质通过循环伏安法表征,结果表明Mn2O3形貌与结构对其电容有重要影响。The MnCO3 with different structures was synthesized at room temperature or by hydrothermal method. The MnCO3 phase obtained at room temperature could be transferred to Mn2O3 plates by heat treatment at 600 ℃. In contrast, porous Mn2O3 nanostructures can be obtained after the heat treatment of MnCO3 precursors prepared by hydrothermal method. Interestingly, Mn2O3 phase can be also formed by heat treatment of the MnCO3 phase obtained at room temperature（Mn-RT） at 120 ℃. The products were characterized by means of XRD, SEM. The results clearly demonstrate a structure evolution from MnCO3 precursors to Mn2O3 structures on the completion of the reaction. The formation mechanism of the above materials was further investigated by TEM and FTIR. The capacitive properties of the Mn2O3 materials were characterized by cyclic voltammetry. The results show that the morphologies and structures of Mn2O3 samples play important roles on their capacitances.

关 键 词：MN2O3 MnCO3 水热合成 电容 

分 类 号：O614.7[理学—无机化学] O611.62[理学—化学]