Definition: In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.
Input: Bactericidal action of demonstrated a stronger bactericidal activity than Al 2 O 3 . The colony-forming ability of E. coli was completely lost in 0.5 min on both of Ag/Al 2 O 3 and AgCl/Al 2 O 3 at room temperature in air. The configuration of the bacteria on the catalyst surface was observed using scanning electron microscopy (SEM). Reactive oxygen species (ROS) play an important role in the expression of the bactericidal activity on the surface of catalysts by assay with O 2 /N 2 bubbling and scavenger for ROS. Furthermore, the formation of CO 2 as an oxidation product could be detected by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and be deduced by total carbon analysis. These results strongly support that the bactericidal process on the surface of Ag/Al 2 O 3 and AgCl/Al 2 O 3 was caused by the catalytic oxidation.

Catalytic sterilization of Escherichia coli K 12 on Ag/Al 2 O 3 surface on pure culture of Escherichia coli K 12 was studied