Numerical Simulation and Experimental Study of the Photothermal Conversion Properties of MXene Nanofluids
In order to explore the potential of the novel MXene nanofluid for solar thermal ap-plications,the relevant properties of MXene nanofluid were systematically investigated from both numerical simulations and experiments.The mechanism of the effect of MXene sheet stacking on its light absorption performance was simulated by the finite-difference time-domain method,and the calculation results showed that MXene with fewer layers was more suitable for preparing nanofluids for photothermal conversion.Few-layer MXene nanofluids with different concentrations were pre-pared by a two-step method to determine the effect of MXene concentration variation on the light absorption of nanofluids.The result showed that an average absorption of 97.9％for MXene nanoflu-ids at 60 mg·L-1,indicating excellent light absorption properties.The photothermal conversion efficiency increases and then decreases with increasing concentration,reaching the highest value of 63.44％at 20 mg·L-1.
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