Enhanced catalytic degradation of organic pollutant by AgBiO3 with metastable lattice

In this study, a series of AgBiO3 with metastable lattice were prepared via a facile chemical method. It was found that the acid treatment induced the reduction of Bi5+ ions and led to the formation of metastable Bi(III)O6 in AgBiO3, which greatly facilitated the release of active lattice oxygen. As a result, all the acid-treated AgBiO3 samples (ABO-x) exhibited enhanced catalytic performance toward the degradation of methyl orange (MO), phenol and Tetracycline (TC). Among them, ABO-0.7 provided the highest catalytic activity, which could remove 98.9% of MO and 98.4% of TC within 40 min and 91% of phenol within 90 min under dark condition. the EPR and trapping experiments revealed that 1O2 and ·O2− played a key role in the catalytic degradation reaction. This work indicated that acid treated-AgBiO3 could be a promising catalyst in the remediation of wastewater.