Abstract
Photocatalytic performances of g-C3N4 based materials prepared under different conditions for rhodamine B (RhB) degradation in aqueous solution were investigated, with the aim of optimizing the precursor, the thermal treatment atmosphere, the g-C3N4 loading and the oxide support. Characterizations such as XRD, TGA, N2 physisorption, UV-Vis, SEM, TEM and PL indicated that the assumed materials with expected properties were prepared. Catalytic tests showed that sample prepared using dicyandiamide as precursors, TiO2 as support, thermal treatment in N2 atmosphere, and at mass ratio of dicyandiamide to TiO2 equals to 0.75:1 are the best conditions of preparing active g-C3N4 based materials for the reaction, which could be attributed to a suitable surface chemistry and an optimum synergistic effect between g-C3N4 and TiO2 under these conditions.
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