海洋防腐用氧化石墨烯/聚苯胺/二氧化钛的制备

以氧化石墨烯为模板,在酒石酸的存在下合成了水性氧化石墨烯/聚苯胺/二氧化钛复合材料.通过TEM、SEM、XRD和IR等设备对材料进行了表征,并采用光降解和电化学手段研究了复合材料的光催化和防腐性能.结果表明,酒石酸掺杂苯胺单体在氧化石墨烯纳米片层表面聚合获得氧化石墨烯/聚苯胺(G/P)层状结构,纳米二氧化钛均匀分散在G/P前躯体表面,形成水性氧化石墨烯/聚苯胺/二氧化钛(G/P/T)层状复合材料.罗丹明B光降解试验表明,复合材料具有良好的光降解效果,提高了金属材料耐生物腐蚀性能;G/P/T改性的环氧树脂则有效地改善了铝合金的腐蚀状况,将铝合金的自腐蚀电流从10-5 A/cm2降低至约10-11 A/cm2.

Preparation of Graphene Oxide/Polyaniline/Titania for Marine Anti-Corrosion

Preparation of aqueous graphene oxide (G) /polyaniline (P) /titanium dioxide (T) composite material in the tartaric solution using graphene oxide as template was presented.Morphologies and crystallizations of as-prepared material were invistigated by TEM, SEM, XRD and IR.Photocatalysis performance and anti-corrosion property of G/P/T material were also investigated by photo-degradation and electrochemical measurements.The results indicate that aniline doped with tartaric acid is dispersed well in solution, and then polymerize into layered graphene oxide (G)/polyaniline (P) with graphene oxide as template, on which nano-TiO2 particles are decorated homogeneously, therefore forming aqueous G/P/T.It is confirmed by the photo-degradation of rhodamine B that G/P/T powder has a good photo-degradation effect, protecting metal material from bio-corrosion.Also, the result shows that G/P/T modified epoxy resin coating could alleviate the corrosion of aluminum alloy, of which self-corrosive current reduces from 10-5 A/cm2 to 10-11 A/cm2.