Shaped mesoporous materials from fresh macroalgae

Reproducible highly mesoporous monolithic materials (0.5-0.7 cm(3) g(-1), 9-15 nm) are prepared from a variety of fresh shaped abundant macroalgae using a simple green approach without the necessity for supercritical carbon dioxide (scCO(2)) drying. This opens up the possibility for low cost and sustainable structured materials for chromatography, catalyst supports and drug delivery systems.