Issue 3, 2022

All-weather-available electrothermal and solar–thermal wood-derived porous carbon-based steam generators for highly efficient water purification

Abstract

Solar steam generation devices cannot work properly under weak solar light irradiation and even no solar light. Herein, all-weather-available electrothermal and solar–thermal wood-derived porous carbon-based water steam generation devices are fabricated for highly efficient water evaporation and purification by preparing wood-derived hydrophilic and porous carbon architectures, generating grooves on their top surfaces, and coating with hydrophobic layers of carbon nanoparticles. Under solar light irradiations, the eco-friendly wood-derived steam generation device can harvest solar energy efficiently for thermally evaporating water on the basis of its solar–thermal energy conversion mechanism. Under a weak solar light irradiation or even no solar light, the steam generator can still generate clean water via its electrothermal evaporation mechanism. Under 1-sun irradiation, the steam generator exhibits a water evaporation rate of 1.49 kg m−2 h−1 with an evaporation efficiency of 77.2%. By integrating the solar–thermal and electrothermal energy conversion mechanisms, an ultrahigh water evaporation rate of 11.73 kg m−2 h−1 is readily achieved under 1-sun irradiation with a voltage of 6 V. The integration of the electrothermal and solar–thermal energy conversion mechanisms makes the environmentally friendly carbon-based steam generator all-weather-available for generating sufficient clean water from wastewater and seawater.

Graphical abstract: All-weather-available electrothermal and solar–thermal wood-derived porous carbon-based steam generators for highly efficient water purification

Supplementary files

Article information

Article type
Research Article
Submitted
24 nov 2021
Accepted
24 des 2021
First published
24 des 2021

Mater. Chem. Front., 2022,6, 306-315

All-weather-available electrothermal and solar–thermal wood-derived porous carbon-based steam generators for highly efficient water purification

J. Wu, X. Li, T. Zhang, X. Li, W. Li and Z. Yu, Mater. Chem. Front., 2022, 6, 306 DOI: 10.1039/D1QM01544C

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