The invention discloses photocatalyst fluorescent ink, and relates to the technical field of ink. According to the invention, the self-made fluorescent agent is frozen into microspheres, and
titanium dioxide is adsorbed on the surface of the self-made fluorescent agent by using
plasma, electrostatic spraying and microwaves, so that the stability of the ink is improved; then, through low-temperature
plasma assisted
radio frequency magnetron
sputtering,
cerium oxide is coordinated and chelated on the surfaces of the
titanium dioxide microspheres, so that the visible
light activity of
titanium dioxide is improved, and ink can be catalytically degraded under visible light; wherein the self-made fluorescent agent is prepared from veratrone, pyrenecarboxaldehyde and
boron trifluoride, so that the ink can display patterns only under
infrared wavelength irradiation, is not easy to decompose by illumination under long-time
infrared irradiation, and has better light stability. The photocatalyst fluorescent ink prepared by the invention has the effects of good
confidentiality, light stability and degradability.