二硫化钼/竹材光热转换材料的制备及其海水淡化性能研究

Preparation of MoS_(2)/Bamboo Photothermal Conversion Material and Its Application in Seawater Desalination

研究基于缓解淡水资源短缺的目的,采用钼酸钠和硫脲为原料在竹材上水热合成二硫化钼的方法制备2D二硫化钼/竹材光热转换材料,通过海水蒸发测试的实验检验其淡化性能,测试结果显示:在一个太阳光照强度下,蒸发1 h后二硫化钼/竹材的蒸发速率达到1.095 kg·m^(-2)·h^(-1);光热转换效率达到78.20%;用UV/Vis/NIR测得二硫化钼/竹材在250-2500 nm波长范围内的最大光吸收率超过80%。表明了二硫化钼/竹材光热转换材料具有较好的光热转换效率。因此,在实验中二硫化钼/竹材表现出良好的光热水蒸发性能,为实现具有绿色和可持续发展的光热蒸发器件的高效利用提供了借鉴和应用基础。

In order to alleviate the shortage of freshwater resources,a 2-dimensional MoS_(2)/bamboo photothermal conversion material was prepared by hydrothermal synthesis of molybdenum disulfide on bamboo with sodium molybdate and thiourea as raw materials.Its desalination property was examined through the seawater evaporation test.The results showed that the evaporation rate of seawater with MoS_(2)/bamboo reached 1.095 kg m^(-2)·h^(-1) after one-hour evaporation under one-sun intensity illumination.The light-heat conversion efficiency was 78.20%.And the maximum optical absorptivity of MoS_(2)/bamboo at wavelengths between 250 nm and 2500 nm measured by UV/Vis/NIR diffuse reflectance spectroscopy exceeded 80%.These indicated that MoS_(2)/bamboo material boasted good photothermal conversion efficiency.Therefore,MoS_(2)/bamboo material in this study had superior photothermal water evaporation performance,which provided reference and application basis for realizing the efficient utilization of green and sustainable photothermal evaporation devices.