Disclosing the Biocide Activity of α-AgCuWO (0 ≤ ≤ 0.16) Solid Solutions.

In this work, α-AgCuWO (0 ≤ ≤ 0.16) solid solutions with enhanced antibacterial (against methicillin-resistant ) and antifungal (against ) activities are reported. A plethora of techniques (X-ray diffraction with Rietveld refinements, inductively coupled plasma atomic emission spectrometry, micro-Raman spectroscopy, attenuated total reflectance-Fourier transform infrared spectroscopy, field emission scanning electron microscopy, ultraviolet-visible spectroscopy, photoluminescence emissions, and X-ray photoelectron spectroscopy) were employed to characterize the as-synthetized samples and determine the local coordination geometry of Cu cations at the orthorhombic lattice.

Inactivation of SARS-CoV-2 by a chitosan/α-AgWO composite generated by femtosecond laser irradiation.

In the current COVID-19 pandemic, the next generation of innovative materials with enhanced anti-SARS-CoV-2 activity is urgently needed to prevent the spread of this virus within the community. Herein, we report the synthesis of chitosan/α-AgWO composites synthetized by femtosecond laser irradiation. The antimicrobial activity against Escherichia coli, Methicilin-susceptible Staphylococcus aureus (MSSA), and Candida albicans was determined by estimating the minimum inhibitory concentration (MIC) and minimal bactericidal/fungicidal concentration (MBC/MFC).

Role of Surfaces in the Magnetic and Ozone Gas-Sensing Properties of ZnFeO Nanoparticles: Theoretical and Experimental Insights.

The magnetic properties and ozone (O) gas-sensing activity of zinc ferrite (ZnFeO) nanoparticles (NPs) were discussed by the combination of the results acquired by experimental procedures and density functional theory simulations. The ZnFeO NPs were synthesized via the microwave-assisted hydrothermal method by varying the reaction time in order to obtain ZnFeO NPs with different exposed surfaces and evaluate the influence on its properties. Regardless of the reaction time employed in the synthesis, the zero-field-cooled and field-cooled magnetization measurements showed superparamagnetic ZnFeO NPs with an average blocking temperature of 12 K.