Antibacterial Activity of Hydrophobic Composite Materials Containing a Visible-Light-Sensitive Photocatalyst

Table 1

Contact angles of water and surface free energy on the PTFE hydrophobic composite films with the addition of N-doped TiO₂.

		Contact angle  (degree)	Surface free energy (mN/m)
Without N-doped TiO2		152	5.8
With N-doped TiO2	3 wt%	152	—
	8 wt%	151	5.0
	12 wt%	152	—