Flower-like organic materials have been used for applications in supercapacitors, catalysis, corrosion science, but no report of "flower" from metal-organic compounds on porous inorganic surface has been available. Here, we report the successful fabrication of flowerlike organic-inorganic materials via the combination of TiO2-MgO film prepared on magnesium alloy through plasma electrolytic oxidation (PEO) as inorganic components and metal-quinoline, Na-8-hydroxyquinoline-5-sulfonic acid (NaHQS) and Co(II)-8-hydroxyquinoline-5-sulfonic acid (CoHQS), as the organic component. Interaction between the CoHQS complex and the porous inorganic materials then leads to the formation of flowerlike organic-inorganic coating on the magnesium surface. Furthermore, a detailed analysis of surface morphologies indicates that MHQS molecules are linked together via kinds of intermolecular hydrogen bonds and non-covalent π-π bonds between heterocyclic molecules. PEO-TiO2-CoHQS and PEO-TiO2-NaHQS exhibit enhanced electrochemical performance and chemical stability compared with the free MHQS, which was discussed based on polarization and impedance interpretation. This is attributed to the physical and chemical adsorption on the coating surface as well as the high surface area of the CoHQS in the nanoflowers.

中文翻译：

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基于金属喹啉化合物与TiO2-MgO膜之间的配位相互作用的独立式防腐杂化材料。

花状有机材料已用于超级电容器，催化，腐蚀科学中，但尚无多孔无机表面上金属有机化合物“花”的报道。在这里，我们报道了通过等离子电解氧化（PEO）作为无机组分在镁合金上制备的TiO2-MgO膜与金属喹啉，Na-8-羟基喹啉-5-磺酸的成功结合，成功制造了花状有机-无机材料。 （NaHQS）和Co（II）-8-羟基喹啉-5-磺酸（CoHQS）作为有机成分。然后，CoHQS络合物与多孔无机材料之间的相互作用导致在镁表面形成花状有机无机涂层。此外，表面形态的详细分析表明，MHQS分子是通过杂环分子之间的各种分子间氢键和非共价π-π键连接在一起的。PEO-TiO2-CoHQS和PEO-TiO2-NaHQS与游离的MHQS相比，具有增强的电化学性能和化学稳定性，这是基于极化和阻抗解释进行讨论的。这归因于涂层表面的物理和化学吸附以及纳米花中CoHQS的高表面积。