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Preparation and analysis of a new bioorganic metallic material

机译：一种新型生物无机金属材料的制备与分析

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Biofouling on metal surfaces is one of the main reasons for increased ship drag. Many methods have already been used to reduce or remove it with moderate success. In this study, a synthetic peptide has been utilized to react with 304 stainless steel aiming to generate a bioorganic stainless steel using a facile technique. After the reaction, white matter was found on the surface of the treated stainless steel via SEM, whilst the nontreated stainless steel had none. Elemental analysis confirmed that excessive N existed on the surface of the treated samples using an integrated SEM-EDS instrument, implying the presence of peptides binding on the surface of the bioorganic stainless steel. The FTIR spectra showed amide A and II peaks on the surface of the bioorganic stainless steel suggesting that either the peptides grafted onto the steel surface or the polypeptide composition accumulated on the steel samples. XPS analysis of the treated steel demonstrated that there was nitrogen bonding on the surface and it was a chemical bond via a previously unreported chemical interaction. The treated steel has a markedly increased contact angle (water contact angle of 65.7 ± 4.7° for nontreated steel in comparison to treated, 96.4 ± 2.1°), which supported the observation of the wettability change of the surface, i.e. the decrease of the surface energy value after peptide treatment. The changes of the surface parameters (such as, S _(a) , S _(q) , S _(sk) and S _(ku) ) of the treated steel by surface analysis were observed.
机译：金属表面上的生物污染是增加船舶拖动的主要原因之一。许多方法已经被用于减少或将其除以中等成功。在该研究中，已经利用合成肽与304不锈钢反应，旨在使用容易技术产生生物无机不锈钢。反应后，通过SEM在处理过的不锈钢的表面上发现白质，同时不锈钢不锈钢没有。元素分析证实，使用集成的SEM EDS仪器，在处理的样品表面上存在过多的N，暗示存在在生物无机不锈钢表面上的肽的存在。 FTIR光谱显示在生物无机不锈钢表面上的酰胺A和II峰，表明覆盖在钢表面上的肽或积聚在钢样品上的多肽组合物。经处理的钢的XPS分析证明了表面上存在氮气键，通过先前未报告的化学相互作用是一种化学键。经处理的钢具有显着增加的接触角（用于非加强钢的接触角（水接触角为65.7±4.7°），与处理过96.4±2.1°），支持观察表面的润湿性变化，即表面的降低肽处理后的能量值。观察到通过表面分析的处理钢的表面参数（例如，S _（A），S _（Q），S _（SK）和S _（SK）和S _（SK）和S _（SK），S _（SK），S _（SK）和S _（ku））。

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