Generation of Magnetite-Embedded Bacterial Nanocellulose Pellicles

Take a bacterial nanocellulose pellicle, a gelatinous sheet of cellulose fibers.

Place it into a three-neck flask containing a solution of iron salts.

Attach a condenser and run water through it to prevent volume loss during heating. Then, purge the flask with nitrogen gas through an inlet to prevent iron oxidation.

Heat and stir the flask in a silicone oil bath to promote diffusion of iron salts into the pellicle.

Add an alkali slowly to raise the pH, causing the iron salts to form magnetite nanoparticles within the pellicle matrix.

Lower the temperature and continue stirring to ensure uniform nanoparticle distribution.

Cool the mixture, then transfer it to a clean vessel.

Using a magnet, retain the pellicle and decant unincorporated materials.

Wash the pellicle repeatedly with deoxygenated water until the pH becomes neutral and the supernatant appears clear.

Transfer the pellicle and sterilize using UV exposure, then immerse it in sterile deoxygenated water for further studies.

Bubble 1000 milliliters of high-purity water with nitrogen gas to remove any dissolved oxygen in the water and replace it with nitrogen.

Use a three-neck round-bottom flask to prepare a solution in a 2 to 1 molar rat