Comparative study of zinc oxide nanocomposites with different noble metals synthesized by biological method for photocatalytic disinfection of Escherichia coli present in hospital wastewater.

Binary zinc oxide (ZnO) nanocomposites with different noble metals, silver (Ag) and ruthenium (Ru), were prepared from an aqueous leaf extract of Callistemon viminalis. The biosynthesized photocatalysts were characterized and examined for their photocatalytic disinfection against Escherichia coli isolated from hospital wastewater. The influence of the different noble metals showed a difference in physicochemical characteristics and photocatalytic efficiency between Ag-ZnO and Ru-ZnO.

Multi-function adsorbent-photocatalyst MXene-TiO composites for removal of enrofloxacin antibiotic from water.

MXenes, a new family of two-dimensional transition metal carbides or nitrides, have attracted tremendous attention for various applications due to their unique properties such as good electrical conductivity, hydrophilicity, and ion intercalability. In this work, TiC MXene, or MX, is converted to MX-TiO composites using a simple and rapid microwave hydrothermal treatment in HCl/NaCl mixture solution that induces formation of fine TiO particles on the MX parent structure and imparts photocatalytic activity to the resulting MX-TiO composites. The composites were used for enrofloxacin (ENR), a frequently found contaminating antibiotic, removal from water.

New insight into the disinfection mechanism of Fusarium monoliforme and Aspergillus niger by TiO photocatalyst under low intensity UVA light.

Titanium dioxide (TiO photocatalytic reaction has great potential for the disinfection of harmful pathogens. However, the disinfection mechanisms of TiO photocatalysis are not yet well-known for fungi and protozoa. In this work, the photocatalytic disinfection mechanism of Fusarium monoliforme and Aspergillus niger under low intensity UVA light (365nm, <10W/m) was studied at the ultrastructural level.