卵状ε-MnO_2的合成及其高活性催化降解亚甲基蓝  

Synthesis of Ellipsoid-like ε-MnO_2 and Highly Active Catalytic Degradation of Methylene Blue

作　　者：黄建智[1,2] 成晓玲[2] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510641 [2]广东工业大学轻工化工学院,广东广州510006

出　　处：《广东工业大学学报》2016年第5期83-86,共4页Journal of Guangdong University of Technology

基　　金：广东省自然科学基金资助项目(10251009001000003)

摘　　要：通过500℃焙烧卵状MnCO_3前驱体,制得了一种高效降解亚甲基蓝的卵状ε-MnO_2催化剂.采用扫描电子显微镜、X射线衍射分析仪、紫外可见分光光度计、比表面积测定仪对材料进行了测试.结果显示,卵状ε-MnO_2催化剂具有很高的比表面积,为88m2/g.将制得的卵状ε-MnO_2材料应用于亚甲基蓝的降解,在H2O_2存在下,卵状ε-MnO_2对亚甲基蓝的脱色率高达92%,表现出在室温下去除亚甲基蓝的优越能力.In this paper, through calcining the ellipsoid-like MnCO 3 precursors at 500℃, the ellipsoid-like e-MnO2 catalysts with an excellent property to decompose methylene blue can be obtained. e-MnO 2 is measured by SEM, XRD, UV-Vis and BET. The results show that the ellipsoid-like e-MnO 2catalysts pos-sess a high surface area of ca. 88 m2/g. The obtained ellipsoid-like e-MnO 2 materials are used as catalysts to decompose methylene blue in the present property of H2O2. And the ellipsoid-like e-MnO 2 can remove a-bout 92% of methylene blue, which shows excellent property to remove methylene blue at room tempera-ture. This shows that ellipsoid-like e-MnO 2 is a highly efficient catalyst removal of methylene blue.

关 键 词：ε-MnO2 卵状 催化降解 亚甲基蓝 

分 类 号：TB383[一般工业技术—材料科学与工程]