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Abstract
A green and novel inorganic antibacterial material was prepared using mussel shell waste as a carrier material loaded with silver. It was characterized and analyzed by X-ray diffraction (XRD), scanning electron microscopy equipped with an energy dispersive spectrometer (SEM-EDS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and N2 adsorption isotherms. The antibacterial activity was evaluated using Escherichia coli and Staphylococcus aureus as sensitive indicator strains. The antibacterial mechanism was probed as well. The results showed that silver carbonate was detected in the prepared material through XRD analysis. XPS measurement and EDS analysis confirmed the loading of silver onto the carrier. The antibacterial test demonstrated that the prepared material had good antibacterial property. Based on the silver ion release and on the pH test, we proposed that the antibacterial mechanism mainly involved the antibacterial activity of Ag+, the slightly higher pH value, and the photocatalytic antibacterial activity of silver carbonate.
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