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Effect of Surface Roughness on the Solar Evaporation of Liquid Marbles by Yijun Feng; Guansheng Yao; Jinliang Xu; Lin Wang; Guohua Liu is a Chemistry article available to read on EtoBox.

What is Effect of Surface Roughness on the Solar Evaporation of Liquid Marbles about?

Hypothesis: Nanostructured materials are widely used for solar energy harvesting and conversion due to their excellent photothermal properties. It is generally accepted that the better the light absorption ability, the better the photothermal conversion efficiency. Experiment: A series of experiments in solar evaporation of liquid marbles (LMs) by coating the droplets with Fe3O4, Ni nanoparticles (NPs) and carbon nanotubes (CNTs) are conducted. Findings: Conversely, we found that the surface roughness of solar absorber plays a significant role in solar evaporation rather than the light absorption. The results disclose that the Fe3O4 NPs with the lowest absorptivity has the largest roughness on drop surface, while that of CNTs show the opposite properties. The evaporation dynamics of LMs are featured with dome or constant spherical collapse with different roughness. Such dynamic difference arises from the mechanical competition between the capillary force and interparticle interaction. Besides, the strong light-harvesting and near-field radiation enabled by the rough surfaces enhance the solar evaporation. The Fe3O4-LM shows the highest evaporation rate of 6.55 μg/s, which is 1.09 a

Who reads Effect of Surface Roughness on the Solar Evaporation of Liquid Marbles?

Author

Yijun Feng; Guansheng Yao; Jinliang Xu; Lin Wang; Guohua Liu

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Chemistry (Physical Sciences)