Polymer/carbon nanotube composite and methods for wastewater treatment

A composite, which is a polycondensation product formed by a reaction of:

• melamine;
• an aldehyde of formula (I)
• or a salt, solvate, or stereoisomer thereof;
• a diaminoalkane of formula (II)
• or a salt, solvate, tautomer or stereoisomer thereof;
• and
• carbon nanotubes comprising activated carbonyl groups;
• wherein:
• R1 is selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, and an optionally substituted aryl;
• R2 is selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted aryl, and an optionally substituted arylalkyl;
• R3 is selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted aryl, and an optionally substituted arylalkyl;
• n is a positive integer in the range of 2-12;
• and
• a weight percentage of the carbon nanotubes relative to a total weight of the composite is 0.005 wt % to 0.5 wt %.