CNC cryogels were prepared directly with the as-obtained CNC suspension, which has a solid concentration of 3.8 %wt in water. MNP-incorporated CNC cryogels were made from a mixture of 20 % v/v of the as-synthesized MNP decorated CNCs (CNC-MNP) and 80 % v/v of asobtained CNC suspension to achieve gelation similar to that of the CNC suspension. The mixed CNC-MNP suspension has a solid concentration of 3.9 %wt in water.