 Boraphene-based papers have been developed as an efficient photothermal material for treating wastewater. These papers exhibit excellent environmental stability and high light-to-heat conversion efficiency, making them ideal for use in solar-powered water evaporation. Furthermore, they are capable of killing up to 100% of both gram-positive and gram-negative bacteria in wastewater within 20 minutes under 3-sun irradiation. This makes them highly suitable for industrial applications such as wastewater treatment. This article was authored by Sunwe Guan, Prashant Kumar, Shishwan Lee, and others.