Metal-free photocatalysts are widely used to decontaminate aqueous solutions by eliminating toxic and non-biodegradable compounds. It is desirable to develop a photocatalyst with high specific surface area, charge separation and migration efficiency. In addition, the hollow porous graphitic carbon nitride (g-C3N4) can improve its light absorption abilities and reduce the recombination of holes and electrons. In this work, hollow porous graphitic carbon nitride (HPCN) was synthesized via a simple tactic polycondensation method, and the resulting HCN showed an enhanced photocatalytic performance towards ciprofloxacin (CIP) degradation compared to pristine g-C3N4 under visible light. The reusability and stability of the HPCN were analyzed. The CIP degradation mechanisms were also investigated through a scavenger test. The scavenger test confirmed that the h+ and °O2- radicals were the primary active species during CIP degradation.

Photocatalytic degradation of ciprofloxacin using hollow porous graphitic carbon nitride prepared via a simple tactic method

ACS Fall 2021

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