Growth of CoFe2O4 Nanoparticles on Graphite Sheets for High-Performance Electromagnetic Wave Absorption in Ku-Band

• Published in: Journal of inorganic and organometallic polymers and materials Vol. 32; no. 12; pp. 4504 - 4514
• Main Authors: Ashfaq, M. Zeeshan, Ashfaq, Aamna, Gong, Hongyu, Akhtar, Nayab, Majeed, Muhammad K., Wang, Shan, Ahmad, Muhammad, Iqbal, Rashid, Zhang, Yujun, Saleem, Adil
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.12.2022; Springer Nature B.V
• Subjects: Chemistry; Chemistry and Materials Science; Cobalt ferrites; Composite materials; Composition; Conduction losses; Electromagnetic radiation; Energy conversion; Functional materials; Graphite; Inorganic Chemistry; Microwave absorption; Nanoparticles; Organic Chemistry; Polymer Sciences; Sheets; Wave power; Graphite sheets; Composites; Microwave absorption; Reflection loss; Cobalt ferrite
• ISSN: 1574-1443; 1574-1451
• DOI: 10.1007/s10904-022-02447-1

Graphite holds a great promise as a good electromagnetic (EM) wave absorbing material due to its good conduction loss, low density, and higher chemical stability. In the microwave absorption (MA) field, intrinsic EM properties and nano-composition of functional materials substantially impact their EM wave energy conversion. A facile solvothermal method is adapted to synthesize cobalt ferrite/graphite sheets (CoFe 2 O 4 /Grs) composites with different Grs compositions. EM parameters, morphological structure, and compositions for prepared composites were studied using various investigative techniques. The minimum reflection loss (RL min ) of CoFe 2 O 4 /Grs composite for 10 wt% of Grs was recorded to − 31.98 dB at 1.2 mm with an effective absorption bandwidth of 5.6 GHz at 1.3 mm, attributing to the carbonization of CoFe 2 O 4 revamping it into MA material and tuning for EM wave energy conversion. This study supports the designing and development of exceptional Gr-based composites as a high-efficiency and insubstantial EM wave absorber.