Efficient visible-light driven photocatalysts: coupling TiO2(AB) nanotubes with g-C3N4 nanoflakes
The wide application of the titanium dioxide (TiO2) as the photocatalysts is greatly hindered by its intrinsic large band gap and usually fast electron–hole recombination. Here, we reported the exploration of coupling g-C3N4 nanoflakes to TiO2 nanotubes with the anatase and TiO2(B) mixed phases (TiO2(AB)) toward the efficient visible-light-driven hybrid photocatalyst. It is found that coupling TiO2(AB) nanotubes with g-C3N4 nanoflakes could bring a profoundly extension the visible light adsorption capacity and enhanced photogenerated carrier separation. Accordingly, they exhibit much higher efficient photocatalytic activities toward the degradation of sulforhodamine B under the visible light irradiation, which is enhanced for nearly 15 times to those of the TiO2(AB) and g-C3N4, suggesting their promising practical applications as novel and efficient semiconductor photocatalysts for the water purification.
KeywordsTiO2 Photocatalytic Activity Visible Light Irradiation Photocatalytic Performance Photogenerated Electron
This work was supported by National Natural Science Foundation of China (NSFC, Grant Nos. 51372123 and 51572133 and Natural Science Foundation of Ningbo Municipal Government (Grant No. 2016A610102).
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