Co_3O_4纳米颗粒的制备及表征  

Preparation and characterization of Co_3O_4 nanoparticles

作　　者：高立波[1] 张强[1] 海振银 李俊漾[1] 冯瑞婷[1] 徐宏妍[2] 薛晨阳[1] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,太原030051 [2]中北大学材料科学与工程学院,太原030051

出　　处：《化工新型材料》2014年第8期85-87,共3页New Chemical Materials

基　　金：国家自然科学基金(91123616;51105345)

摘　　要：以脱脂棉为碳源，硝酸钴为前驱物，采用碳辅助法焙烧制备了粒径为50nmCo3O4纳米颗粒。用X射线衍射（XRD）对不同焙烧温度（200～600℃）下样品的物相、晶粒度进行了研究，并结合傅立叶红外光谱（FT-IR）对C030t物相演变进行了分析，确定中间产物前躯体是CoCO3；通过扫描电镜（SEM）和透射电镜（TEM）对制备的Co3O4样品的形貌、粒径进行了分析；同时，X射线能谱（EDS）和氮气吸附-脱附曲线测试等表明制备的Co3O4表面存在碳元素和孔结构，具有较大的比表面积，有利于提升其光解水制氢能力。The cobalt oxide nanoparticles with 50nm in diametr were prepared via carbon-assisted method using degreasing cotton as the carbon source and cobalt nitrate as the precursor. The phases and particle size of samples obtained at different baking temperature （200～600℃） were characterized by X-ray diffraction （XRD）. Meanwhile, Fourier transform infrared spectroscopy （FTIR） was used to analyze phase evolution of Co304, showing that CoCO3 was the intermediate precursor. The scanning electron microscopy （SEM） and transmission electron microscopy （TEM） were performed to charac- terize the morphology and particle size of the resultant Co3O4. In addition, the results of EDS and nitrogen adsorption and desorption isotherms confirmed the presence of carbon element on the surface of Co3O4 with pore structures and large specific surface areas,havirig a good favor to the hydrogen production from photocatlytic water splitting,

关 键 词：四氧化三钴 脱脂棉 碳辅助 氢气 

分 类 号：O614.812[理学—无机化学] TB383.1[理学—化学]