Porous cellulose nanofiber (CNF)-based aerogel with the loading of zeolitic imidazolate frameworks-8 (ZIF-8) for Cu(II) removal from wastewater

A novel biobased porous aerogel was synthesized using physical mixing, freeze-drying, and in-situ growth methods. Zeolitic imidazolate frameworks-8 (ZIF-8) were grafted onto the surface of CS/CNF solid composite to form a ZIF-8@CS/CNF aerogel. The structural characteristics adsorption potential investigated. It found that specific area 206 m2/g, water stability CNF enhanced by incorporating CS. Meanwhile, isotherm kinetics fit pseudo-second-order kinetic model (R2 = 0.96) Langmuir 0.97) with copper(II) oxide (Cu(II)) theoretical capacity 245 mg/g, respectively. Furthermore, this aerogel, which combined metal-organic frameworks (MOFs) CNF, easy fabricate it biodegradable. These suggest has broad for wastewater treatment.