Author(s): Zhao, ZJ (Zhao, Zejia); Jia, GZ (Jia, Guozhi); Liu, YL (Liu, Yanling); Zhang, QR (Zhang, Qiurui); Zhou, YY (Zhou, Yaoyao); Chang, K (Chang, Kai)

Source: ACS OMEGA Volume: 5 Issue: 23 Pages: 13482-13488 DOI: 10.1021/acsomega.9b03973 Published: JUN 16 2020

Abstract: Interfacial localization of solar thermal energy conversion to drive evaporation is a promising water treatment technology, especially for gaining pure water in freshwater-deficient areas. Phoenix tree bark is chosen as the raw material mainly because of its low cost and renewability. The carbonized bark with broadened pore sizes possess efficient steam escape channels and light absorption structure. The film with a double-layer structure is constructed through converting the surface of the bark into the carbonized structure under controllable laser treatment. The evaporation efficiency is calculated to be 74% under 1 sun by enhancing the photo-thermal conversion ability and efficiently opening the surface water transport channels simultaneously. The distillation water exhibits large resistance values (9.65 M Omega) and low concentrations of four primary ions (Na+, K+, Mg2+, and Ca2+), which achieves international standard for drinking water. In addition, the carbonized bark also exhibits all-right purified performance toward water evaporation from dye wastewater. The low cost and clean technology provides new inspiration for the future development of applicable solar thermal energy-driven water treatment systems.

Accession Number: WOS:000542223300003

PubMed ID: 32566813

ISSN: 2470-1343

Full Text: https://pubs.acs.org/doi/10.1021/acsomega.9b03973