Hollow porous organic polymer: High-performance adsorption for organic dye in aqueous solution

Several hollow porous organic polymers were conveniently fabricated by poly-condensation of tetraphenyl porphyrin (TPP), tetrabiphenyl porphyrin (TBPP), or triphenylbenzene (TPB), with nano-sized ZnO particles as template and AlCl3 as catalyst. The hollow polymers exhibit much enhanced adsorption capacity for organic dyes in aqueous solution relative to the pristine polymers. Particularly, the hollow polymer based on TBPP (h-COP-P) displays high adsorption capacity (460 mg/g within 500 min) as well as good recycling performance toward Rhodamine B. This capacity is about three times larger than that of corresponding pristine POPs (COP-P) and is even comparable with the best performed organic polymers reports to date, which is ascribed to its unique hydrophobic hollow structure.