Effective antimicrobial activity of ZnO and Yb-doped ZnO nanoparticles against Staphylococcus aureus and Escherichia coli

Effective Enrichment of Low-Concentration Rare-Earth Ions by Three-Dimensional Thiostannate K2Sn2S5

“…The Sn 3d 3/2 and 3d 5/2 of Sn 4+ were observed at 494.6 and 486.1 eV, respectively, and a peak at 161.8 eV was the characteristic peak for S 2p . As displayed in Figure b, the high-resolution spectrum of Yb 4d exhibits the five characteristic peaks of the binding energy for Yb 3+ located at 186.1, 189.8, 198.7, 200.5, and 206.7 eV. − Moreover, an additional peak is also detected at 194.0 eV, which could be assigned to the satellite peak of Yb 3+ . The multiformity of positive trivalent oxidation levels in the spectrum is due to the strong influence on the 4d spectrum of Yb by the Coulomb interaction. , In addition, Raman spectra of KTS-2 and Yb-KTS-2 have been recorded to investigate the interactions between Yb 3+ ions and S 2– ions (Figure S6).…”

Antibiotic-free antimicrobial poly (methyl methacrylate) bone cements: A state-of-the-art review

“…Third, there are number of novel antimicrobial materials that should be investigated for their suitability to be formulated into a suitable form to be used as additives for an AFAMBC. Examples of materials that could be added to the powder of a plain cement are a quorum-sensing inhibitor drug[ 113 ], Ti-doped ZnO[ 114 ], nano-GO nanosheets[ 115 ], selenium nanoparticles[ 116 ], Ag-nanoparticle-reduced GO nanocomposite[ 117 ], chitosan hybrid nanoparticles[ 118 ], a Cu cluster molecule[ 119 ], powder prepared from extract from a Tunisian lichen[ 120 ], Yb-doped ZnO nanoparticles[ 121 ], and an analog of PKZ18 (PKZ18-22), a molecule that has been shown to block growth of antibiotic-resistant S. aureus in biofilm[ 122 ]. Examples of materials that could be added to the liquid of a plain cement are benzothiazole or one of its derivatives[ 123 , 124 ] and a natural antimicrobial agent (such as extract of Salvadora persica , Olea europaea , and Ficus carcia leaves[ 125 ] or biosynthesized ZnO nanoflowers[ 126 ]).…”

Prospects of ZnS and ZnO as smart semiconductor materials in light-activated antimicrobial coatings for mitigation of severe acute respiratory syndrome coronavirus-2 infection

“…Among the semiconductor materials, ZnS and ZnO are very promising owing to their outstanding physical properties, manufacturing simplicity for different synthesis strategies, low cost, high chemical and thermal stabilities, and high versatility for several technologies (such as ultraviolet light diodes, photocatalysis, sensors, and solar cells) [19] , [20] , [21] , [22] , [23] , [24] , [25] , [26] . Within the reported properties, there are several works in the literature suggesting a high antimicrobial activity by Zn-based materials, including against the SARS-CoV-2 virus, by both experimental and theoretical approaches, making these materials suitable candidates for application as coatings in masks [19] , [20] , [21] , [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] , [35] , [36] , [37] , [38] . For instance, Sportelli et al tested the in vitro efficiency of ZnO nanoparticles (NPs) synthesized by means of an ecofriendly route against the SARS-CoV-2 virus and reported a reduction of the viral load of up to 90%, suggesting the further application as coatings [36] .…”