Degradation of norfloxacin by copper-doped BiWO-induced sulfate radical-based visible light-Fenton reaction.

In this work, a series of Cu(ii)-doped BiWO nanomaterials with good photo-response properties were facile synthesized and used to obtain efficient peroxymonosulfate (PMS) activation activity for norfloxacin (NOF) removal under visible LED light irradiation. It was found that Cu-BiWO presents superior catalytic performance for NOF degradation in comparison with pristine BiWO, attributed to the partial substitution of Bi by Cu ions. Moreover, the effects of experimental conditions were carefully investigated, including PMS concentration, catalyst dosage and initial pH, and the experimental data fitted well with the pseudo-first-order model.