Sulfonated poly(ether ether ketone) composite membranes based on amino‐modified halloysite nanotubes that effectively immobilize phosphotungstic acid

In this work, we prepared amino‐modified halloysite nanotubes (PEI‐DHNTs) via the co‐deposition of self‐polymerized dopamine and polyethylenimine (PEI) on the surface of nanotubes, which was confirmed by X‐ray photoelectron spectroscopy (XPS) and Thermogravimetric analysis (TGA). A series of composite proton exchange membranes (PEMs) were prepared by incorporating PEI‐DHNTs and phosphotungstic acid (HPW) into sulfonated poly(ether ether ketone)...