研究目的
Investigating the visible light-responsive antibacterial activity of Ag2S-coupled ZnO microspheres with a type-II heterojunction.
研究成果
ZnO@Ag2S core/shell microspheres exhibit significant antibacterial activity under visible light irradiation due to good separation and transfer of photogenerated charge carriers resulting from its staggered energy band structure.
研究不足
The study focuses on the antibacterial activity under visible light irradiation and does not explore other potential applications or the long-term stability of the heterojunction.
1：Experimental Design and Method Selection:
ZnO microspheres were prepared by a microwave-assisted method, and ZnO@Ag2S was achieved by an ion-exchange method. Three ZnO@Ag2S samples with different Ag2S:ZnO molar ratios were prepared.
2：Sample Selection and Data Sources:
The samples were characterized by SEM, TEM, HRTEM, XRD, UV-Vis absorption spectra, and photocurrent measurements.
3：List of Experimental Equipment and Materials:
Microwave-assisted method for ZnO microspheres preparation, ion-exchange method for Ag2S coupling.
4：Experimental Procedures and Operational Workflow:
Preparation of ZnO microspheres, coupling with Ag2S nanoparticles, characterization, and photocatalytic antibacterial tests.
5：Data Analysis Methods:
Analysis of SEM, TEM, HRTEM images, XRD patterns, UV-Vis absorption spectra, and photocurrent responses.
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