Synthesis of a novel TiO2/HA/RGO composite material with photocatalytic activity for dye degradation

Titanium dioxide (TiO2) is widely used as photocatalysts in the field of organic wastewater treatment in recent years.In this study, TiO2 is combined with hydroxyapatite (HA) and reduced graphene oxide (RGO) to prepare a novel ternary composite material. And methylene blue(MB) was used as the target pollutant to evaluate the photocatalytic activity of TiO2/HA/RGO. The results show that the introduction of HA and RGO can effectively enhance the catalytic performance of TiO2. Under 120min of simulated sunlight, the composite showed excellent dye removal effect, the removal rate of MB can reach 99.8%, and its degradation rate is 2 times that of TiO2/HA and 7 times that of TiO2. The improvement of the photocatalytic activity of the ternary composite is mainly due to the synergistic effect between TiO2, HA and RGO. This work provides a new idea for the synthesis of practical photocatalysts.

Automated summary

In this study, a novel ternary composite material was prepared by combining titanium dioxide (TiO2) with hydroxyapatite (HA) and reduced graphene oxide (RGO). Methylene blue (MB) was used as the target pollutant to evaluate the photocatalytic activity of TiO2/HA/RGO. The results showed that the introduction of HA and RGO effectively enhanced the catalytic performance of TiO2. The ternary composite exhibited excellent dye removal effect, with a removal rate of 99.8% for MB under 120 minutes of simulated sunlight, which was 2 times that of TiO2/HA and 7 times that of TiO2. The improved photocatalytic activity of the ternary composite was mainly attributed to the synergistic effect between TiO2, HA, and RGO. This work provides a new idea for the synthesis of practical photocatalysts.