Zeolitic imidazolate framework (ZIF-8) nanocrystals were uniformly grown on the surface of cellulose (CNCs) to give a hybrid material, [email protected] By varying stoichiometry components, it was possible control size ZIF-8 crystals CNC surface. Optimized ([email protected]) used as template synthesize microporous organic polymer (MOP), protected]@CNC. After etching with 6 M HCl solution, MOP ...