The ZIF-67 with GO worked!! The concentrations of Methylene Blue dropped to almost zero if not zero. This was true for the four concentrations tested, 12.5 ppm, 25, ppm, 50 ppm, 100 ppm.

Now, all the samples are going to be sent to a different lab to analyze the concentration of the ions and the ICP-MS of the solutions.

Updates to follow!!