Tuning the microwave absorption capacity of TiP2O7 by composited with biomass carbon

Impedance matching is a vital consideration for a microwave absorbing material (MAM) design. Incorporating carbon materials with dielectric absorbents can not only tune the impedance matching characteristics, but also ameliorate the absorption performance through dual-loss mechanism. Here, TiP2O7 is applied to composite with coconut shell derived carbon to tune the impedance, thus an excellent absorbing performance is achieved. The TiP2O7/C composites were obtained through a facile sol-gel process with subsequent thermal treatment. The TiP(2)O(7 )particles with sizes of 500 nm are found to be decorated on the surface of the carbon matrix. Electromagnetic characterization shows that the TiP2O7/C composites possess a reflection loss peak value of -32.4 dB at 15.8 GHz with a thickness of 2 mm. In addition, the effective absorption bandwidth reaches 6 GHz. Our findings confirm that TiP2O7 is a promising candidate for microwave absorption, which could be further enhanced by incorporating carbon nanomaterials.