Coal Combustion Synthesis of Coal Cinder-Supported TiO2 with Commendable Photocatalytic Activity
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Coal cinder-supported TiO2 photocatalysts were synthesized via a novel coal combustion method. As-obtained samples were characterized by XRD, SEM, EDS mapping, Raman spectra, FTIR and DRS, and their photocatalytic performances were evaluated by degradation of methylene blue (MB) and methyl orange (MO) under UV–Vis light illumination. The results revealed that mixed-phases TiO2 with adjustable anatase–rutile ratio could be obtained by adjusting the amount of precursor tetrabutyl titanate, which was uniformly covered on the coal cinder. These coal cinder-supported TiO2 photocatalysts exhibited commendable photocatalytic activity. Among them, the indexed CCT-7.5 sample presented the maximum of activity, which can be attributed to the optimal phase composition of TiO2. The present work provided a novel synthetic route to fabricate immobilized photocatalysts, which might be extended to the preparation of other functional materials.
KeywordsPhotocatalysis Mixed-phase TiO2 Nanostructures Coal combustion
This work was supported by National Natural Science Foundation of Jiangsu Province (No. BK20151143) and the bilateral project of NSFC-STINT (51611130064).