摘要
Based on the nanocasting strategy, highly ordered mesoporous CoFe2O4 is synthesized via the ＇two-solvent＇ im- pregnation method using a mesoporous SBA-15 template. An ordered two-dimensional （P6mm） structure is preserved for the CoFe2O4/SBA-15 composite after the nanocasting. After the SBA-15 template is dissolved by NaOH solution, a mesoporous structure composed of aligned nanoparticles can be obtained, and the P6mm structure of the parent SBA-15 is preserved. With a high specific surface area （above 90 m2/g） and ferromagnetic behavior, the obtained material shows potential in light weight microwave absorption application. The minimum reflection loss （RL） can reach -18 dB at about 16 GHz with a thickness of 2 mm and the corresponding absorption bandwidth is 4.5 GHz.
Based on the nanocasting strategy, highly ordered mesoporous CoFe2O4 is synthesized via the ＇two-solvent＇ im- pregnation method using a mesoporous SBA-15 template. An ordered two-dimensional （P6mm） structure is preserved for the CoFe2O4/SBA-15 composite after the nanocasting. After the SBA-15 template is dissolved by NaOH solution, a mesoporous structure composed of aligned nanoparticles can be obtained, and the P6mm structure of the parent SBA-15 is preserved. With a high specific surface area （above 90 m2/g） and ferromagnetic behavior, the obtained material shows potential in light weight microwave absorption application. The minimum reflection loss （RL） can reach -18 dB at about 16 GHz with a thickness of 2 mm and the corresponding absorption bandwidth is 4.5 GHz.
