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 Ni2SiO3 hollow micro-nanospheres.And the NiSiO3@C nanospheres was calcined at high temperature after further coating.Replacing nickel nitrate with isomole nickel nitrate and cobalt nitrate,Ni0.5Co0.5SiO3 micro-nanospheres and Ni0.5Co0.5SiO3@C nanospheres were obtained.Using SEM,TEM,HAADF STEM and XRD,the composite structure of sample was characterized.Then the electromagnetic constant of NiSiO3@C and Ni0.5Co0.5SiO3@C coaxial ring samples was tested,and the results showed that the highest dielectric constant value of the NiSiO3@C coaxial ring sample was 2.7718,and the maximum dielectric loss was 0.1523.
Lin Yuan, Zhang Ying, Sun Xin
. Controlled preparation and electromagnetic performance of MSiO3@C(M=Ni,Co)hollow composite micro-nanosphere[J]. New Chemical Materials, 2021
, 49(8)
: 88
-92
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.08.019
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