2D visible-light-driven TiO2@Ti3C2/g-C3N4 ternary heterostructure for high photocatalytic activity
- 45 Downloads
A novel 2D visible-light-driven TiO2@Ti3C2/g-C3N4 ternary heterojunction photocatalyst with modified interfacial microstructure and electronic properties was synthesized by ultrasonic-assisted calcination method. The remarkably active g-C3N4 could provide high productivity of photogenerated electrons and holes. Meanwhile, the O/OH-terminated Ti3C2 and by-product TiO2 could act as excellent supporters by migrating electrons in TiO2@Ti3C2/g-C3N4 hybrids. As a result, the highest photocatalytic activities in the degradation of aniline and RhB were increased to 5 and 1.33 times higher than that of pristine g-C3N4 under visible-light irradiation, respectively. Furthermore, we proposed that n–n heterojunction and n-type Schottky heterojunction were built up across their interfaces, which efficiently improve the transition of electrons and further promote the photocatalytic activity of TiO2@Ti3C2/g-C3N4 hybrids. More appealingly, all the results highlight that the environment-friendly TiO2@Ti3C2/g-C3N4 heterojunction hybrids would be desirable candidates for pollutants degradation.
This work was supported by the National Natural Science Foundation of China (51602297, U1510109); the Major Research Project of Shandong Province (2016ZDJS11A04); the Start-up Foundation for Advanced Talents of Qingdao University of Science and Technology (010022919); the Photocatalysis of Coal-fired Boiler Flue Gas and H2O2 Oxidative Desulfurization and Denitrification Pilot Plant (17-3-3-71-nsh, 20173702021476); and the High-concentration Organic Wastewater Adsorbent Production Process (20170903). All authors have given approval to the final version of the manuscript.
- 25.Wang W, Wu Z, Eftrkhari E, Huo Z, Li X, Tade M, Yan C, Yan Z, Li C, Li Q, Zhao D (2018) High performance heterojunction photocatalytic membranes formed by embedding Cu2O and TiO2 nanowires in reduced graphene oxide. CST Sci 8:1704Google Scholar