Synthesis of RuO2/g-C3N4 nanocomposites as a photocatalytic system for crystal violet dye degradation and wastewater treatment

Abstract

In this work, RuO2/g-C3N4 nanocomposites are synthesized, characterized, and used as a very effective photocatalytic system for the breakdown of Crystal Violet dye (CVi) and the treatment of wastewater from textile industries. The RuO2/g-C3N4 nanocomposites exhibited exceptional photocatalytic activity in ideal laboratory conditions, annihilating CVi in 60 minutes when exposed to visible light. In an actual experiment, RuO2/g-C3N4 nanocomposites took just 65 minutes to light-irradiate a 100 mL mixed dark-colored dye solution (100 mg/L CVi) and turned it into a colorless solution. This practical application demonstrates potential of RuO2/g-C3N4 nanocomposites in the treatment of textile wastewater, where it is required to remove multiple color kinds at once. The research also thoroughly examines the synthesized nanocomposites' precise characterization through the use of methods like FESEM, XRD, FTIR, and XPS. The study also investigates the effects of various operating situations on the declining efficiency of CVi. The results show that RuO2/g-C3N4 nanocomposites have the potential to be a viable and efficient strategy to deal with the problem of wastewater contaminated with dyes. Therefore, the work provides a comprehensive understanding of the chemical states and elemental surface compositions in RuO2/g-C3N4 and g-C3N4, which is crucial for understanding the properties and potential applications of these materials.

Keywords

• RuO2/g-C3N4 nanocomposites
• Photocatalytic degradation
• Crystal violet dye
• Textile wastewater treatment
• Visible light absorption