摘要
以Mn(NO3)2和HMTA(六亚甲基四胺)为原料,水热氧化法制备纳米Mn3O4颗粒,研究反应温度和原料对产物的影响,利用X射线粉末衍射仪、扫描电子显微镜分别对样品的晶体结构和表面形貌进行表征.当反应温度为120℃,HMTA和Mn(NO3)2物质的量比达1∶1,反应12 h时可得到纯净纳米Mn3O4颗粒.以罗丹明B为目标降解物,H2O2为氧化剂,考察Mn3O4催化分解H2O2的性能,降解率达97%,表明Mn3O4对H2O2分解降解罗丹明B具有良好的催化作用.
Mn3O4 nanoparticles were prepared through hydrothermal oxidation method using Mn(NO3)2 and hexamethylenetetramine(HMTA)as raw resources.The effects of reaction temperature and molar ratio of raw materials on the final product were studied.The crystal structure and surface morphology of samples were characterized by X-ray powder diffraction and scanning electron microscope.The pure Mn3O4 nanoparticles can be prepared when the mole ratio of HMTA and Mn(NO3)2 is more than 1:1 at 120℃ with the reaction time of 12 hours.The performance of catalytic decomposition of hydrogen peroxide by Mn3O4 was investigated using rhodamine B as the target pollutant and H2O2 as the oxidant.The degradation rate of rhodamine B reached 97%,which showed that Mn3O4 has a good catalytic performance on the decomposition of hydrogen peroxide.
作者
于笑寒
朱蕾
纪志航
YU Xiaohan;ZHU Lei;JI Zhihang(College of Chemical Engineering and Materials/Key Laboratory for Micro-Nano Energy Storage and Conversion Materials of Henan Province,Xuchang University,Xuchang 461000,China)
出处
《许昌学院学报》
CAS
2020年第5期81-85,共5页
Journal of Xuchang University
关键词
纳米四氧化三锰
水热法
催化
双氧水
manganese tetroxide nanoparticles
hydrothermal method
catalysis
hydrogen peroxide
