2D Ti3C2T MXene/MOFs composites derived CoNi bimetallic nanoparticles for enhanced microwave absorption

Robust Bioinspired MXene–Hemicellulose Composite Films with Excellent Electrical Conductivity for Multifunctional Electrode Applications

“…Ti 3 C 2 T x MXene was prepared by selectively etching Al layers from the MAX phase (Ti 3 AlC 2 ) via the HCl/LiF solution (Figure a) . From the XRD patterns, the negligible (104) peak located at 38.8° and the obvious shift of (002) from 9.5° to 8.5° after etching (Figure S4) indicate the effective etching Al layers in the MAX phase, which is consistent with previous works. − After subsequent sonication, the obtained Ti 3 C 2 T x show nearly transparent platelike morphology with lateral sizes between several hundreds of nanometers and several micrometers (Figure S5a–c). The morphology and dimension of Ti 3 C 2 T x nanosheets are also proved by the AFM image (Figure S5d).…”

Magnetic enhanced high-efficiency electromagnetic wave absorbing MXene/Fe3O4 composite absorbers at 2–40 GHz

“…In this case, the eddy current loss is not the only loss factor, and eddy current loss natural resonance, and exchange resonance jointly lead to the magnetic loss of the MF composites. 53 In addition, C 0 is not fixed throughout the frequency range, which is due to the ultrasmall sizes of the attached Fe 3 O 4 nanoparticles. 54…”

Bird-Nest-Like Multi-Interfacial MXene@SiCNWs@Co/C Hybrids with Enhanced Electromagnetic Wave Absorption

“…The μ ′ values of MSC-10, MSC-20, and MSC-30 present a similar declining trend with the rising frequency, which is ascribed to the relaxation of the magnetic moment. Notably, μ ′ of MSC-10 exhibits a decreasing and subsequently increasing trend in the low-frequency area, which can be interpreted by the heterogeneous distribution of Co/C caused by the too little SiC NWs @Co/C in the absorber . In addition, μ″ is mainly used to determine the magnetic loss characteristics of the absorber, the magnetic loss of MSC-X mainly derives from natural resonance, exchange resonance, and eddy current effect.…”

“…Notably, μ′ of MSC-10 exhibits a decreasing and subsequently increasing trend in the lowfrequency area, which can be interpreted by the heterogeneous distribution of Co/C caused by the too little SiC NWs @Co/C in the absorber. 25 In addition, μ″ is mainly used to determine the magnetic loss characteristics of the absorber, the magnetic loss of MSC-X mainly derives from natural resonance, exchange resonance, and eddy current effect. Experiments demonstrated that the resonant frequency is related to the size and morphology of the magnetic particles, and that high crystallinity and large particles tend to produce stronger exchange resonances.…”