Abstract
N134 carbon black modified Bi2WO6 (BWO) photocatalysts with enhanced oxygen vacancies (OVs) were fabricated through a hydrothermal strategy. The results of XRD and Raman spectra declare that an intense interaction occurs between N134 and BWO. Modification BWO with N134 can curb the recombination of charge carriers, proven by the results of surface photovoltage spectroscopy (SPS). The electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS) analysis reveal that palpable increased amount of the OVs, causing the production of more O2-. O2- radicals are significant contributors for photocatalytic destruction of rhodamine B (RhB) over the 1.0% photocatalyst by the result of trapping experiment. 1.0% reveals boosted photoactivity for destruction of RhB and tetracycline (TC), which is 2.3 times and 1.2 times higher than that of BWO, respectively. 1.0% possesses an exceptional reusability and stability. This work conduces to comprehend the mechanism of boosted photocatalytic activity for carbon blank modified semiconductor photocatalysts.
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