微纳多级结构 MoS₂/Ni₃S₂@泡沫镍多孔复合 光热材料的制备及其界面蒸发性能

Using nickel foam (NF) as both the substrate and nickel source, ammonium molybdate as the molybde-num source, and thiourea as the sulfur source, MoS₂/Ni₃S₂@NF (MNS@NF) composite photothermal materials were in situ grown on the NF skeleton via the hydrothermal method. The structure and morphology of the composite mate-rial were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS), and its light-absorption and interfacial-evaporation performance were studied. The results indi-cated that under simulated solar illumination (light intensity of 1 kW·m^-2), the sample MNS@NF-200-24 synthe-sized at a hydrothermal reaction temperature of 200 ℃ and reaction time of 24 h achieved a light absorption rate of 91.7%, a deionized water interfacial evaporation rate of 2.846 kg·m^-2·h-1, and an interfacial evaporation efficiency of 95.6%. Additionally, the interfacial evaporation performance in simulated seawater was tested. After 1 h of evapo-ration, the rate reached 2.360 kg·m^-2·h-1, and after 12 h of continuous interfacial evaporation, it stabilized at 2.000 kg·m^-2·h-1, with no crystalline salt precipitating on the macroscopic surface. The water obtained through evapora-tion and condensation met the drinking water standards set by the World Health Organization (WHO) and the Envi-ronmental Protection Agency (EPA).