Fabrication of rGO-Bridged TiO/g-CN Z-Scheme Nanocomposites via Pulsed Laser Ablation for Efficient Photocatalytic CO Reduction.

Highly efficient photocatalysts can be fabricated using favorable charge transfer nanocomposite channel structures. This study adopted pulsed laser ablation in liquid (PLAL) to obtain rGO-bridged TiO/g-CN (rGO-TiO/g-CN) photocatalytic Z-scheme without the need for noble metals. In addition to evaluating the resulting nanocomposite (comprising rGO nanosheets, TiO nanotubes, and g-CN nanosheets) CO reduction effectiveness, its chemical, morphological, structural, and optical characteristics were examined using various analytical techniques.

Impact of common comorbidities on antimicrobial consumption and mortality amongst critically ill COVID-19 patients: A retrospective two center study in Saudi Arabia.

Objectives: To determine the association between common comorbidities, ICU mortality and antimicrobial consumption among critically ill COVID 19 patients in Saudi Arabia.

Methods: A retrospective observational study of patients admitted to the ICU from March 1st, 2020, through August 31st, 2021. We excluded patients who stayed <24 h in the ICU and with no confirmed COVID-19 PCR testing.