Preparation and Photocatalytic Properties of g-C3N4/TiO2 Hybrid Composite

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g-C3N4/TiO2 composite were prepared by hydrolysis of Ti(OC4Hn9)4 and the precursors of g-C3N4 at room temperature and annealing in nitrogen atmosphere. X-ray diffraction results revealed that all the products were anatase structure. The chemical nature of O, N of the g-C3N4/TiO2 were identified by X-ray photoelectron spectroscopy, presenting N-Ti-O and N-Ti-N doping status of the composite. The g-C3N4/TiO2 composite showed better photocatalytic activity for the UV and visible-light degradation of Rhodamine B.

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      2022, Progress in Solid State Chemistry
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      The moderate bandgap (∼2.7 eV) of g-C3N4 in TiO2 composite enables it to be used under visible light photocatalytic activity compared to the pristine TiO2. TiO2 modified with g-C3N4 has been widely studied by Wang et al., Lu et al., Ji et al. and Elbanna et al. have synthesized g-C3N4/TiO2 mesocrystals metal free composite, which showed twenty times H2 evolution rate compared to the pure g-C3N4 [86,116,279]. They have reported that the g-C3N4/P25 showed seven times lower photocatalytic activity compared to the g-C3N4/TiO2 mesocrystals metal free composite.

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