Graphene lyophilizer TF -
HFD -
6 is a small vacuum freezing dryer equipment, suitable for use in laboratory, a small amount of graphene vacuum freeze-drying process.
With a small, affordable;
Compared with traditional laboratory small lyophilizer, easy to operate, in situ freeze-dried, avoid the material drying process of pollution and artificial operation.
vacuum freeze drying technology is the wet material or solution under low temperature freeze into solid, and then make the moisture in the vacuum without liquid directly sublimate to gas, eventually make the material of dehydration drying technology.
due to the poor thermal stability of the graphite oxide, often occurs in the process of drying of pyrolysis black phenomenon, and heating drying after graphite oxide reunited into a lump, is not conducive to the follow-up dispersed in the solvent.
Experiment, therefore, in order to obtain easily oxidation in the process of graphite powder materials, often in centrifugal washing after freeze drying, the GO size, sometimes deal with chemical reduction with the technology of 3 d graphene hydrogels.
