Electrodeless Studies of MXenes in Aqueous and Polar Non-Aqueous Aprotonic Solvent

MXenes attract considerable attention due to their unique properties, in particular, their high electrical conductivity.The physical processes occurring during the electrodeless study of the specific electrical conductivity of MXenes in distillation water and in a polar non-aqueous solvent of N-Methyl-2Pyrrolidone (NMP) at fixed resonant frequencies for five solenoids (f 1 = 160 kHz, f 2 = 270 kHz, f 3 = 1.6 MHz, f 4 = 4.8 MHz, and f 5 = 23 MHz) are considered.The oscillating circuit was tuned to resonance by changing the capacitance of the BM-560 Q-factor meter.The Q factor of the oscillating circuit was measured in the range of 100-300 with a maximum relative error of 5% and in the range of 30-100 with a maximum relative error of 3%.The cylinder with the liquid was placed in the middle of the measuring solenoid, in the area of a homogeneous magnetic field.The measurements were performed for four control volumes of the liquids under study (1 mL, 2 mL, 3 mL, and 4 mL).The best measurement sensitivity was observed for the maximum volume of the liquid (4 mL).A difference between the experimental dependences of the introduced attenuation d of the oscillating circuit with a cylinder with MXenes in aqueous and non-aqueous polar solvent NMP was observed.The nonlinear dependence of the attenuation of the oscillatory circuit d on the volume of the studied liquids was analyzed.The maximum value of the attenuation of the oscillating circuit for the solenoid at the resonant frequency of 160 kHz was observed for the NMP-MXenes measurement, in contrast to the study of MXenes in distillation water having the highest attenuation at a frequency of 1.6 MHz.