title: Heteronanostructured Co@carbon nanotubes-graphene ternary hybrids: synthesis, electromagnetic and excellent microwave absorption properties.
abstract: In order to explore high efficiency microwave absorption materials, heteronanostructured Co@carbon nanotubes-graphene (Co@CNTs-G) ternary hybrids were designed and produced through catalytic decomposition of acetylene at the designed temperature (400, 450, 500 and 550 °C) over Co3O4/reduced graphene oxide (Co3O4/RGO). By regulating the reaction temperatures, different CNT contents of Co@CNTs-G ternary hybrids could be synthesized. The investigations indicated that the as-prepared heteronanostructured Co@CNTs-G ternary hybrids exhibited excellent microwave absorption properties, and their electromagnetic and microwave absorption properties could be tuned by the CNT content. The minimum reflection loss (RL) value reached approximately -65.6, -58.1, -41.1 and -47.5 dB for the ternary hybrids synthesized at 400, 450, 500 and 550 °C, respectively. And RL values below -20 dB (99% of electromagnetic wave attenuation) could be obtained over the as-prepared Co@CNTs-G ternary hybrids in the large frequency range. Moreover, based on the obtained results, the possible enhanced microwave absorption mechanisms were discussed in details. Therefore, a simple approach was proposed to explore the high performance microwave absorbing materials as well as to expand the application field of graphene-based materials.
authors.affiliation: College of Physics, Guizhou University, Guiyang 550025, People's Republic of China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing National Laboratory of Microstructures and Jiangsu Provincial Laboratory for NanoTechnology, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Xiaosi
authors.initials: X
authors.lastname: Qi
authors.affiliation: College of Physics, Guizhou University, Guiyang 550025, People's Republic of China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Hu
authors.affiliation: College of Physics, Guizhou University, Guiyang 550025, People's Republic of China.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Cai
authors.affiliation: College of Physics, Guizhou University, Guiyang 550025, People's Republic of China.
authors.forename: Ren
authors.initials: R
authors.lastname: Xie
authors.affiliation: College of Physics, Guizhou University, Guiyang 550025, People's Republic of China.
authors.forename: Zhongchen
authors.initials: Z
authors.lastname: Bai
authors.affiliation: College of Physics, Guizhou University, Guiyang 550025, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: College of Physics, Guizhou University, Guiyang 550025, People's Republic of China.
authors.forename: Shuijie
authors.initials: S
authors.lastname: Qin
authors.affiliation: Collaborative Innovation Center of Advanced Microstructures, Nanjing National Laboratory of Microstructures and Jiangsu Provincial Laboratory for NanoTechnology, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhong
authors.affiliation: Collaborative Innovation Center of Advanced Microstructures, Nanjing National Laboratory of Microstructures and Jiangsu Provincial Laboratory for NanoTechnology, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Youwei
authors.initials: Y
authors.lastname: Du