GREEN cellulose aerogels from paper waste were successfully synthesized cost-effectively by
using alkaline/urea and freeze drying/supercritical drying processes. The cellulose aerogel structures could be
optimized by various recipes for high absorbance applications of polar liquids (water) and non-polar liquids
(spilled oil), and excellent eco-friendly heat insulators (very low thermal conductivity and water repellent for
tropical climate usage). The hydrophobic property of the cellulose aerogels were significantly improved by
coating the whole porous structure with a few nanometers of MTMS through chemical vapor depositio