초소수성 표면 형성을 위한 코발트 기반 나노 구조체 제조 및 전구체의 영향 = Fabrication of Cobalt-based Nanostructure and the Influence of Co Precursors on the Formation of Superhydrophobic Surface

다국어 초록 (Multilingual Abstract)

In this study, we fabricated a superhydrophobic surface to prevent frost that can occur on the surface of a heat pump heat exchanger. We investigated the influence of Co precursors during the chemical bath deposition process to form superhydrophobic surfaces and the properties of the resulted Co-coated surface. It is confirmed that the superhydrophobic surface can be formed by using various Co precursors such as CoCl2･6H2O, Co(NO3)2･6H2O, CoSO4･7H2O, and Co(CH3COO)2･6H2O, and the formation of superhydrophobic surface can be highly dependent on the concentration of corresponding Co precursors. In particular, we found that superhydrophobic nanostructured surface layer was successfully formed under the optimized conditions by using CoCl2･6H2O, Co(NO3)2･6H2O, and CoSO4･7H2O. The results suggest an important methodology that can provide superhydrophobicity to various surfaces such as glass, metal, and ceramic substrates. As a result of this study, it is expected to make an important contribution to improving the efficiency of heat pump heat exchangers and reducing energy consumption.