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Updated: Jul 31, 2026

Preparing Silica Aerogel Monoliths via a Rapid Supercritical Extraction Method
Published on: February 28, 2014
SCG-Based CNF Aerogels with Oriented and Aligned Porous Structure for Solar Interfacial Desalination
Xinjie Luo1,2, Li Zhou1, Ruizhi Zheng3,4
1School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, P.R. China.
Abstract:
Spent coffee grounds are recognized as a green and sustainable resource of cellulose nanofiber (CNF), which can further form aerogels with rGO for solar-driven interfacial desalination via directional freezing technology. The vertically arranged channels provide better photothermal conversion performance and salt tolerance of rGO/CNF aerogels. Their max evaporation rate can reach to 2.729 kg·m-2·h-1 under natural sunlight. In terms of long-term application (10 days), the aerogels exhibit a stable evaporation property in outdoor environments. The optimum daily average water yield is 15.00 L·m-2, which can fulfill the daily water requirement of six people.
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