MSiO_(3)@C(M=Ni,Co)空心复合纳米微球的可控制备及其电磁性能研究  

Controlled preparation and electromagnetic performance of MSiO_(3)@C(M=Ni,Co)hollow composite micro-nanosphere

作　　者：林媛 张瑛 孙昕 Lin Yuan;Zhang Ying;Sun Xin(Department of Chemical and Biological Engineering,Minjiang Teachers College,Fuzhou 350003)

机构地区：[1]闽江师范高等专科学校化学与生物工程系,福州350003

出　　处：《化工新型材料》2021年第8期88-92,100,共6页New Chemical Materials

基　　金：闽江师范高等专科学校博士课题(MKBZ201803)。

摘　　要：通过模板法制备二氧化硅纳米微球,再将硝酸镍与二氧化硅纳米微球进行水热反应得到空心硅酸镍(NiSiO_(3))纳米微球,进一步包覆后高温煅烧制得空心镍基硅酸盐@碳(NiSiO_(3)@C)复合纳米微球。将硝酸镍替换为等摩尔的硝酸镍和硝酸钴,即可得到空心硅酸镍钴(Ni_(0.5)Co_(0.5)SiO_(3))纳米微球和空心镍钴硅酸盐@碳(Ni_(0.5)Co_(0.5)SiO_(3)@C)复合纳米微球。利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、元素分析(HAADF STEM)等手段对样品的复合结构进行表征,并测试NiSiO_(3)@C和Ni_(0.5)Co_(0.5)SiO_(3)@C同轴环样品的电磁参数,实验结果表明,NiSiO_(3)@C同轴环样品介电常数最高值为2.7718,介电损耗最高值为0.1523。The silicon dioxide nanospheres were prepared by template method,and the nickel nitrate was reacted to the silicon dioxide nanospheres for hydrothermal reaction,then obtained the Ni2SiO_(3) hollow micro-nanospheres.And the NiSiO_(3)@C nanospheres was calcined at high temperature after further coating.Replacing nickel nitrate with isomole nickel nitrate and cobalt nitrate,Ni_(0.5)Co_(0.5)SiO_(3) micro-nanospheres and Ni_(0.5)Co_(0.5)SiO_(3)@C nanospheres were obtained.Using SEM,TEM,HAADF STEM and XRD,the composite structure of sample was characterized.Then the electromagnetic constant of NiSiO_(3)@C and Ni_(0.5)Co_(0.5)SiO_(3)@C coaxial ring samples was tested,and the results showed that the highest dielectric constant value of the NiSiO_(3)@C coaxial ring sample was 2.7718,and the maximum dielectric loss was 0.1523.

关 键 词：模板法 空心 电磁 复合 

分 类 号：O641.6[理学—物理化学] O614.812[理学—化学]