Environmental Studies and Forestry

Solar water purification with photocatalytic nanocomposite filter based on TiO2 nanowires and carbon nanotubes

E. Horváth, J. Gabathuler, et al.

Discover an innovative sunlight-powered photocatalytic water filter that effectively eliminates microbial pathogens while reducing harmful drug and pesticide traces. This groundbreaking research, conducted by E. Horváth, J. Gabathuler, G. Bourdiec, and their colleagues, leverages TiO2 nanowires and carbon nanotubes to enhance water purification through advanced photocatalytic processes.

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~3 min • Beginner • English

Index

Abstract

Water contamination due to environmental conditions and poor waste management limits access to safe drinking water, especially in electricity-poor regions lacking advanced purification infrastructure. This study demonstrates that titanium dioxide nanowires (TiO2NWs)-based photocatalytic filters powered solely by sunlight can efficiently decontaminate water. Interweaving TiO2NWs with carbon nanotubes (CNTs) forms a TiO2NWs/CNTs composite that adds a visible-light-driven pasteurization channel via photothermal heating. The nanoporous filter intercepts various microbial pathogens, including bacteria and large viruses. Photocatalytically generated reactive oxygen species (ROS) on the TiO2NWs/CNTs surface under sunlight contribute to removal of a broad range of organic compounds and microbes. A pilot study also showed encouraging reductions of trace drugs and pesticides in drinking water.

Publisher

npj Clean Water

Published On

Apr 07, 2022

Authors

E. Horváth, J. Gabathuler, G. Bourdiec, E. Vidal-Revel, M. Benthem Muñiz, M. Gaal, D. Grandjean, F. Breider, L. Rossi, A. Sienkiewicz, L. Forró

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