Graphene oxide (GO) decorated on multi-structured porous titania fabricated by plasma electrolytic oxidation (PEO) for enhanced antibacterial performance

Plasma electrolytic oxidation (PEO) is proven as a scalable method for surface treatment of titanium (Ti) providing thick oxide layer with porous micro-nano morphology. Despite the lack antibacterial performance, this modification has potential to improve osseointegration properties Ti-based implant. To address limitation, we demonstrated new concept, showing that partial incorporation graphene (GO) porous-PEO Ti-surface can significantly its performance. Our idea coating compared full coverage GO was motivated create mixed PEO and ability, while maintaining properties. achieve these goals, combined electrophoretic deposition process (EPD) deposit sheets over PEO-treated substrate. The SEM, EDS, optical profilometry, XRD Raman spectroscopy confirmed growth unique multi-structured structures decorated patches. bio-mineralization test provided evidence hydroxyapatite formation PEO-GO surface, indicating good bioactivity. Finally, samples superior rate ~80% against E.coli ~100% S. aureus. These results indicate modified substrates are very promising development advanced biomedical implants.