Aluminum(III)-doped ZnO@Fe3O4 nanocomposite as a magnetic sorbent for preconcentration of cadmium(II)

Utilizing a nanocomposite aerogel grafted with Fe3O4@GO for the extraction and determination of metoprolol in exhaled breath condensate

“…Furthermore, Fe 3 O 4 NPs were synthesized utilizing the method portrayed in the literature. 40 First, in 40 mL deionized water, 8.73 mmol of FeCl 2 ·4H 2 O and 4.37 mmol of FeCl 3 ·6H 2 O were dissolved and under a N 2 purge, the solution was heated to 80 °C. Thereupon, 5 mL of ammonia solution (28% v/v) was added quickly into the vigorously stirred solution.…”