Mesoporous Ag/ZnO hybrid cages derived from ZIF-8 for enhanced photocatalytic and antibacterial activities. Issue 11 (1st June 2021)

• Record Type: Journal Article
• Authors: Cui, Junwei; Wu, Dapeng; Li, Zhenyun; Zhao, Guoan; Wang, Jinshui; Wang, Le; Niu, Bingxuan
• Is Part Of: Ceramics international. Volume 47:Issue 11(2021)
• Page Start: 15759
• Page End: 15770
• Publication Date: 2021-06-01
• Subjects: ZnO -- Ag -- Nanoparticles -- Photocatalysis -- Antibacterial effects; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.02.148
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Ag/ZnO hybrid cages with well-preserved polyhedron shape and rich mesoporous structures were prepared thorough in situ pyrolysis of AgNO3 impregnated ZIF-8 precursor. Due to the bi-template function of ZIF-8, the as-prepared cages show well-defined hollow chamber inherited from the precursor and uniformly embedded Ag nanoparticles (NPs). The as-introduced Ag NPs could enhance the light absorption and promote charge separation, which finally improve the antibacterial performances. Therefore, compared with pure ZnO, the Ag/ZnO hybrid cages demonstrate prominent photocatalytic degradation of different organic dyes, such as Methylene Blue, Methylene Orange, Eosin and Rhodamine B under simulated sunlight. In addition, the hybrid Ag/ZnO cages exhibit outstanding inhibition performances against Escherichia coli, Staphylococcus aureus, and the highly infective Mycobacterium-tuberculosis . The photocatalytic and antibacterial mechanism of the hybrid Ag/ZnO cages were also studied in detail by means of optical/electrochemical dynamic tests and Ag + and Zn 2+ release measurements.