Abstract Copper sulfide (CuS) nanostructures have an important application prospect in the field of solar photo-thermal conversion because of their excellent photo-thermal stability. In this paper, nanostructured CuS nanorods were successfully prepared via hydrothermal reaction method. The crystal structure and surface morphology of the as-prepared CuS nanorods were characterized. The optical absorption and photo-thermal conversion performance of the CuS emulsions based on water were studied. The ultraviolet/visible/near infrared (UV/Vis/NIR) absorption spectra tests show that the prepared CuS emulsions have strong optical absorption in both visible light and near infrared light bands. And the photo-thermal conversion results indicate that the CuS emulsions possess good photo-thermal conversion performance, and the maximum temperature of the emulsion reaches about 74.44 °C with the mass fraction of 0.10%. Moreover, in a certain concentration range, the photo-thermal conversion performance will be effectively enhanced with increasing the mass fractions of the emulsions.

中文翻译：

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用于高效光热转换的高稳定性硫化铜纳米棒的水热合成

摘要 硫化铜（CuS）纳米结构由于其优异的光热稳定性，在太阳能光热转换领域具有重要的应用前景。本文采用水热反应法成功制备了纳米结构的CuS纳米棒。表征了所制备的 CuS 纳米棒的晶体结构和表面形貌。研究了基于水的CuS乳液的光吸收和光热转换性能。紫外/可见/近红外（UV/Vis/NIR）吸收光谱测试表明，制备的CuS乳液在可见光和近红外光波段均具有强光吸收。光热转换结果表明CuS乳液具有良好的光热转换性能，乳液的最高温度达到约 74.44 ℃，质量分数为 0.10%。此外，在一定浓度范围内，随着乳液质量分数的增加，光热转换性能将得到有效提高。