无模板合成一维纳米二氧化锰的研究  

Template-Free Synthesis of One-Dimensional MnO_2 Nano-Materials

作　　者：邓建成[1] 邓惠仁[1] 

机构地区：[1]湘潭大学化学学院环境友好化学重点实验室,湖南湘潭411105

出　　处：《湘潭大学自然科学学报》2010年第4期64-67,共4页Natural Science Journal of Xiangtan University

摘　　要：以Mn^(2+)为锰源,硝酸铵作为氧化剂,不需要任何表面活性剂或者模板,通过调控反应时间和Mn^(2+)离子的浓度,成功地用水热法制备出了大长径比的α-MnO_2·3H_2O纳米线、γ-MnO_2纳米线及β-MnO_2纳米棒.探讨了二氧化锰可能的生成机理.One-dimensional MnO_2 nano-materials with large aspect ratio were successfully synthesized via a hydrothermal route in the absence of any surfactant or template.In this route,Mn^（2＋） was as a source of manganese and NH_4NO_3 as an oxidant.MnO_2 nanowires gradually thickened and eventually became the rod with small aspect ratio by extending the reaction time or increasing the Mn^（2＋） concentration.Moreover,the crystal form of MnO_2 was changed fromαorγintoβ.And the mechanism that Mn^（2＋） was oxidized to MnO_2 by NH_4NO_3 was explored.

关 键 词：二氧化锰纳米线 水热法 一维纳米材料 

分 类 号：O646[理学—物理化学]