Graphitic C3N4 Sensitized TiO2 Nanotube Layers: A Visible Light   Activated Efficient Antimicrobial Platform
  In this work, we introduce a facile procedure to graft a thin graphitic C3N4 (g-C3N4) layer on aligned TiO2 nanotube arrays (TiNT) by one-step chemical vapor deposition (CVD) approach. This provides a platform to enhance the visible-light response of TiO2 nanotubes for antimicrobial applications. The formed g- C3N4/TiNT binary nanocomposite exhibits excellent bactericidal efficiency against E. coli as a visiblelight activated antibacterial coating. 
Jingwen Xu, Yan Li, Xuemei Zhou, Yuzhen Li, Zhi-Da Gao, Yan-Yan Song,   Patrik Schmuki
physics.bio-ph physics.chem-ph q-bio.CB