Preparation and photocatalytic properties of V N Co doped TiO₂/attapulgite photocatalytic composite materials

V-N co-doped TiO₂/attapulgite photocatalytic composite materials were synthesized by slo-gel method, preparation method, V-N-TiO₂ and attapulgite of mass ratio, calcination temperature and time of V-N-TiO₂/attapulgite on photocatalytic properties were studied. On the condition of simulative sunlight, photocatalytic properties of V-N-TiO₂/attapulgite were measured by using methylene blue as evaluation standards. Research shows that when mass ratio of TiO₂ to attapulgite is 1：3, calcination temperature is 300℃ and calcination time is 2 h, the best performance properties of V-N-TiO₂/attapulgite photocatalytic composite materials to methylene blue is obtained.