Synthesis, crystal structure, and Hirshfeld surface analysis of 1,3-di-hydro-2-benzimidazol-2-iminium 3-carb-oxy-4-hy-droxy-benzene-sulfonate.

The asymmetric unit of the title salt, CHN ·CHOS, comprises two 1,3-di-hydro-2-benzimidazol-2-iminium cations and two 2-hy-droxy-5-sulfobenzoate anions (' = 2). In the crystal, the mol-ecules inter-act through N-H⋯O, O-H⋯O hydrogen bonds and C-O⋯π contacts. The hydrogen-bonding inter-actions lead to the formation of layers parallel to (01).

Detoxifying SARS-CoV-2 antiviral drugs from model and real wastewaters by industrial waste-derived multiphase photocatalysts.

The use of antiviral drugs has surged as a result of the COVID-19 pandemic, resulting in higher concentrations of these pharmaceuticals in wastewater. The degradation efficiency of antiviral drugs in wastewater treatment plants has been reported to be too low due to their hydrophilic nature, and an additional procedure is usually necessary to degrade them completely. Photocatalysis is regarded as one of the most effective processes to degrade antiviral drugs.