@article{ART003274542},
author={Meng Wang and Tong Xu and Hong Pan and Lihui Xu and Yi Teng and Xueqiang Fu and Rui Zhang and Qian Li},
title={The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={6},
pages={2895-2906},
doi={10.1007/s42823-025-00963-x}
TY - JOUR
AU - Meng Wang
AU - Tong Xu
AU - Hong Pan
AU - Lihui Xu
AU - Yi Teng
AU - Xueqiang Fu
AU - Rui Zhang
AU - Qian Li
TI - The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material
JO - Carbon Letters
PY - 2025
VL - 35
IS - 6
PB - Korean Carbon Society
SP - 2895
EP - 2906
SN - 1976-4251
AB - In this study, a composite material based on agricultural waste coconut shells was successfully developed as an efficient, lightweight, and sustainable electromagnetic wave (EMW) absorber. Specifically, coconut shells were used as the raw material, and a simple one-step activation charring process was employed to obtain coconut shell porous carbon (CSPC). ZnFe2O4 with a hollow spherical structure was then in situ grown on the surface of CSPC, resulting in a special ZnFe2O4/CSPC composite material. Due to its unique hollow structure, porous characteristics, and heterogeneous interfaces, the composite material achieved optimized impedance matching, leading to excellent EMW absorption performance. The fabricated ZnFe2O4/CSPC composite demonstrated a minimum reflection loss (RLmin) of − 37.32 dB at 10.80 GHz and an effective absorption bandwidth of 2.40 GHz at a thickness of only 2.0 mm. SEM and TEM analyses confirmed that the composite possessed a hollow and porous structure, while the BET specific surface area was measured at 133.709 m2 g⁻1. Based on the synergistic effects of ZnFe2O4 and CSPC, dielectric losses, magnetic losses, and impedance matching, the potential EMW absorption mechanisms were proposed. The ZnFe2O4/CSPC composite material prepared in this study was a novel, green, and sustainable EMW absorber.
KW - Coconut shell porous carbon;ZnFe2O4;Hollow;Electromagnetic wave absorption
DO - 10.1007/s42823-025-00963-x
ER -
Meng Wang, Tong Xu, Hong Pan, Lihui Xu, Yi Teng, Xueqiang Fu, Rui Zhang and Qian Li. (2025). The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material. Carbon Letters, 35(6), 2895-2906.
Meng Wang, Tong Xu, Hong Pan, Lihui Xu, Yi Teng, Xueqiang Fu, Rui Zhang and Qian Li. 2025, "The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material", Carbon Letters, vol.35, no.6 pp.2895-2906. Available from: doi:10.1007/s42823-025-00963-x
Meng Wang, Tong Xu, Hong Pan, Lihui Xu, Yi Teng, Xueqiang Fu, Rui Zhang, Qian Li "The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material" Carbon Letters 35.6 pp.2895-2906 (2025) : 2895.
Meng Wang, Tong Xu, Hong Pan, Lihui Xu, Yi Teng, Xueqiang Fu, Rui Zhang, Qian Li. The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material. 2025; 35(6), 2895-2906. Available from: doi:10.1007/s42823-025-00963-x
Meng Wang, Tong Xu, Hong Pan, Lihui Xu, Yi Teng, Xueqiang Fu, Rui Zhang and Qian Li. "The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material" Carbon Letters 35, no.6 (2025) : 2895-2906.doi: 10.1007/s42823-025-00963-x
Meng Wang; Tong Xu; Hong Pan; Lihui Xu; Yi Teng; Xueqiang Fu; Rui Zhang; Qian Li. The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material. Carbon Letters, 35(6), 2895-2906. doi: 10.1007/s42823-025-00963-x
Meng Wang; Tong Xu; Hong Pan; Lihui Xu; Yi Teng; Xueqiang Fu; Rui Zhang; Qian Li. The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material. Carbon Letters. 2025; 35(6) 2895-2906. doi: 10.1007/s42823-025-00963-x
Meng Wang, Tong Xu, Hong Pan, Lihui Xu, Yi Teng, Xueqiang Fu, Rui Zhang, Qian Li. The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material. 2025; 35(6), 2895-2906. Available from: doi:10.1007/s42823-025-00963-x
Meng Wang, Tong Xu, Hong Pan, Lihui Xu, Yi Teng, Xueqiang Fu, Rui Zhang and Qian Li. "The coconut shell-derived porous carbon supported hollow spherical ZnFe2O4 as an efficient electromagnetic wave absorption material" Carbon Letters 35, no.6 (2025) : 2895-2906.doi: 10.1007/s42823-025-00963-x
