Abstract
In this work, a significant enhancement of pyrocatalysis is found in barium calcium titanate @carbon (Ba0.8Ca0.2TiO3@C) hybrid nanofibers hydrothermally synthesized and designed to decompose rhodamine B (RhB) dye. The pure Ba0.8Ca0.2TiO3 can decompose the RhB dye at 30–60 °C cold-hot cycles with a final decomposition ratio of 31.3%. As the content of C mixed in Ba0.8Ca0.2TiO3 gradually increases from 0 to 5 wt%, the decomposition ratio of RhB first increases and then decreases, with the highest decomposition ratio of 76.6%, when the content of C is 3 wt%. The enhancement of pyrocatalytic activity could be attributed to the fact that the presence of C accelerates the carrier mobility and impedes the free charges recombination in the pyrocatalysis process. With the enhanced pyrocatalytic performance, Ba0.8Ca0.2TiO3@C hybrid nanofibers have tremendous potential for the alleviation of dye wastewater pollution through utilizing alternative cold-hot energy variation.
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