In-Situ polymerized polypyrrole Janus cotton fabric for Solar-driven water evaporation in Textile-dying wastewater

Herein, a Janus cotton fabric (JCF) with polypyrrole (PPy) layer was prepared through one-side ultrasonic atomization deposition followed by the in-situ polymerization. The PPy layer was robust on the fabric and showed excellent light absorbance ability (similar to 99%). And the JCF with 60 min one-side deposition (JCF-60) showed good photothermal conversion ability with the vapor generation rate of 1.45 kg m(-2)h(-1) and the photothermal conversion efficiency of 91.0% in dyed water purification. It can be expected to large scale applications in solar-driven water evaporation.

Automated summary

A Janus cotton fabric (JCF) with a polypyrrole (PPy) layer was prepared using ultrasonic atomization deposition followed by polymerization. The PPy layer was strong and had a high light absorbance rate (around 99%). The JCF-60, with a 60-minute deposition, showed good photothermal conversion ability, with a vapor generation rate of 1.45 kg m(-2)h(-1) and a photothermal conversion efficiency of 91.0% in dyed water purification, suggesting potential for large-scale applications in solar-driven water evaporation.