新型纳米锰氧化物的制备及其染料吸附性能

新型纳米锰氧化物的制备及其染料吸附性能 Controlled Preparation of Novel Manganese Oxide Nanocrystals and Dye Adsorption Property 王瑜 WANG Yu1 1 first-author 黄进 HUANG Jin1 1 刘薇 LIU Wei2 2 李琦 LI Qi3 3 裘晓辉 QIU Xiaohui3 3 章桥新 ZHANG Qiaoxin4 4 武汉理工大学化学工程学院 武汉理工大学化学工程学院 School of Chemical Engineering,Wuhan University of Technology School of Chemical Engineering,Wuhan University of Technology 中国科学院研究生院 中国科学院研究生院 Graduate University of Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences 国家纳米科学中心 国家纳米科学中心 National Center for Nanoscience and Technology National Center for Nanoscience and Technology 武汉理工大学机电工程学院 武汉理工大学机电工程学院 School of Mechanical and Electronic Engineering,Wuhan University of Technology School of Mechanical and Electronic Engineering,Wuhan University of Technology 选用Mn（CH3COO）2.4H2O为前体,以十八烯为溶剂,在表面活性剂油酸和油胺存在时,在高温条件下通过"一锅法"制得类四角星形状MnO纳米粒子,利用扫描电子显微镜（SEM）和X射线衍射（XRD）等手段对样品的尺寸、形貌及结构进行了表征.结果显示,通过调节表面活性剂的浓度可制得50 1 00 nm的纳米粒子,并且尺寸可控、粒径均一.该MnO纳米粒子经部分氧化后不仅保持类四角星的形状,且它对亚甲基蓝的吸附性能远优于商用的MnO2. Novel quadrangle nanoparticles of MnO were one-pot synthesized by the thermal decomposition of Mn（CH3COO）2 4H2O in octadecene at high temperature,using oleic acid and oleyl amine as surfactants.The structure and size of as-prepared products were characterized by scanning electron microscope（SEM） and X-ray powder diffraction（XRD）.The results show that the size of nanoparticles in the range of 50-100 nm with narrow size distribution could be controlled by adjusting the concentrations of the surfactants.The as-prepared MnO nanoparticles were further partially oxidized as MnO2 and the quadrangle structure was inherited by the oxidized.On the other hand,the oxidation process endowed the manganese oxide nanoparticals a good ability to adsorb methylene blue,which is far superior to the adsorption efficiency of commercial MnO2. 纳米结构 锰氧化物 一锅法 吸附 nanostructure manganese oxide one-pot adsorption 10.14188/j.1671-8836.2010.03.013 TB383.1 国家水专项课题（2009ZX07527-00703）;国防基础研究项目（A1420080185）;中国科学院院长基金特别支持项目（110300R102）;武汉市青年科技晨光计划项目（200850731383） 2010-03-01 2021-04-01 3 56