Glass article provided with photocatalyst film, process for producing glass article, and coating liquid

A coating liquid for producing a photocatalyst film, comprising:

• silicon oxide particles;
• titanium oxide particles;
• ethylene glycol;
• and
• a binder source as a source of a binder material whose main component is silicon oxide,
• wherein the ratio among the mass of the silicon oxide particles, the mass of the titanium oxide particles, and the mass of the binder material in terms of SiO2 is 72 to 79:13 to 18:8 to 12,
• the silicon oxide particles have an average particle diameter of 50 nm to 150 nm, the titanium oxide particles have an average particle diameter of 5 nm to 20 nm, and the average particle diameter of the silicon oxide particles is five times or more of the average particle diameter of the titanium oxide particles,
• the binder source is silicon alkoxide, and
• a concentration of the ethylene glycol in the coating liquid is 5 to 15% in terms of mass.