Abstract
A facile method was developed to prepare mesoporous graphic C3N4 (MGCN)/TiO2 composites by synthesizing MGCN through a chemical template method and combining it with TiO2 by a solvothermal route. The as-prepared nanocomposites were respectively characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), and diffuse reflectance UV-vis spectroscopy (DR-UV-Vis). The specific surface areas and pore sizes of the samples were obtained by the Brunauer-Emmett-Teller (BET) method, and the photocatalytic performance of MGCN/TiO2 was evaluated by photocatalytic degradation of methyl blue (MB) aqueous solution under visible-light irradiation, with the result that the composite prepared at the MGCN/TiO2 mass ratio of 1:1 displayed a higher photodegradation, 1.85 folds and 6.72 folds of that of pure MGCN and commercial TiO2. As-prepared MGCN/TiO2 composites were utilized as coatings on the carpet tile for removing indoor HCHO and the purification efficiency of formaldehyde can reach 39.69% (24 h˙0.25 m2)−1, which was higher than that of the blank carpet with − 16.20% (24 h˙0.25 m2)−1 for self-releasing, indicating their potential application prospect in functional coatings.
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Acknowledgments
The authors gratefully acknowledge Gao Rong Novel Decoration Materials Shanghai Co. Ltd. to provide the carpet tile samples and Jiangsu i-Tsings Environment Laboratory Co. Ltd. to complete the HCHO removal performance evaluations of as-prepared carpet tiles.
Funding
This research was funded by the Fundamental Research Funds for the Central Universities (2232015D3-17), the National Natural Science Foundation of China (51303022), and Industry-University-Institute Project (Booster Plan) of the Shanghai Municipal Education Commission (15cxy55).
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Wang, S., Hua, X., Ji, J. et al. Facile synthesis of highly efficient mpg-C3N4/TiO2 visible-light-induced photocatalyst and its formaldehyde removal performance in coating application. J Nanopart Res 21, 187 (2019). https://doi.org/10.1007/s11051-019-4612-4
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DOI: https://doi.org/10.1007/s11051-019-4612-4