十二烷基硫酸钠对溶液燃烧合成多孔Co_(3)O_(4)粉体形貌及磁学性能的影响  

Effect of Sodium Dodecyl Sulfate on Morphology and Magnetic Properties of Porous Co_(3)O_(4) Powder Synthesized by Solution Combustion

作　　者：魏玉鹏[1,2] 赵飞云 冯绍晨 李庆林[1,2] 申永前[1,2] 马吉强[1,2] 王海燕[1,2] WEI Yupeng;ZHAO Feiyun;FENG Shaochen;LI Qinglin;SHEN Yongqian;MA Jiqiang;WANG Haiyan(College of Material Science and Technology,Lanzhou University of Technology,Lanzhou 730050,China;State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050 [2]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《材料科学与工程学报》2021年第6期943-947,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金青年基金资助项目(51767016,51561021)。

摘　　要：采用盐助溶液燃烧合成法制备多孔Co_(3)O_(4)粉体,并对十二烷基硫酸钠(SDS)为辅助盐合成的Co_(3)O_(4)粉体分别在500、600和700℃进行热处理,研究其微观形貌、结构和磁学性能。研究结果表明,燃料中引入SDS作为表面活性剂,起到发泡和细化晶粒的作用,热处理对Co_(3)O_(4)粉体的形貌、结构及磁学性能产生明显影响。在n(Co(NO_(3))_(2)·6H_(2)O)∶n(SDS)=1∶0.075时合成的Co_(3)O_(4)粉体经700℃热处理后得到了高纯度、空间网状结构好、平均晶粒尺寸为100nm的纳米晶Co_(3)O_(4)粉体。经500、600及700℃热处理后Co_(3)O_(4)粉体的矫顽力和剩磁逐渐增大,其中700℃热处理后粉体的矫顽力和剩磁最大,矫顽力为316.8Oe,剩磁为31.5×10^(-3)emu/g。Porous Co_(3)O_(4)powder was prepared by salt-assisted solution combustion synthesis,and Co_(3)O_(4)powder synthesized by sodium dodecyl sulfate(SDS)as auxiliary salt was heat treated at 500,600 and 700℃to study its morphology,structure and magnetic properties.It is proved that SDS is introduced into the fuel as a surfactant to act as foam and refine grain,and heat treatment has a significant impact on the morphology,structure and magnetic properties of Co_(3)O_(4)powder.Heat treatment at n(Co(NO_(3))_(2)·6 H_(2)O)∶n(SDS)=1∶0.075,700℃,nanocrystalline Co_(3)O_(4)powder with a high purity,good spatial network structure and average grain size of 100 nm is obtained.Heat treatment at 500,600 and 700℃,coercivity and remanence of Co_(3)O_(4)powder increase gradually.After heat treatment at 700℃,the coercivity and remanence are the largest,with the coercivity being 316.8 Oe and remanence being 31.5×10^(-3)emu/g.

关 键 词：CO3O4 溶液燃烧合成法 十二烷基硫酸钠(SDS) 燃料 磁学性能 

分 类 号：TB34[一般工业技术—材料科学与工程] TB32