Abstract
With the popularity of environment friendly, low-carbon, sustainable, and high-quality development, the reuse of waste resources has attracted more and more attention. In this study, the functional Zn-based mixed metal oxides (Zn-MMOs) were facilely fabricated by ZnO-assisted hydrothermal coprecipitation method using the spent metal ions of Mg2+, Al3+, and Fe3+ after acid-leaching clay for the removal of antibiotics and hazard microorganisms from water. The results suggested that the composition, microstructure, adsorption, and antibacterial activity of Zn-MMOs depended on the added amount of ZnO. When the molar ratio of M2+/M3+ was 8, the obtained Zn-MMOs presented the maximum adsorption capacities for tetracycline and chlortetracycline of 409 and 693 mg/g, respectively. Meanwhile, Zn-MMOs exhibited similar antibacterial activity to that of commercial ZnO against Staphylococcus aureus and Escherichia coli, which could effectively eliminate microbial contaminants in the water environment. This work provided a collaborative solution for the resource utilization of wastes and the pollution treatment of wastewater, which played a significant positive role in promoting green economy and sustainable development.
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