A S-type 2D/2D heterojunction via intercalating ultrathin g-C3N4 into NH4V4O10 nanosheets and the boosted removal of ciprofloxacin

Exploring cheap, eco-friendliness, and highly efficiency photocatalysts for improving the degradation performance of ciprofloxacin (CIP) is a challenge in the environmental remediation field. Herein, 2D/2D ultrathin g-C3N4/NH4V4O10 (CNNS/NH4V4O10) heterojunction is successfully prepared by intercalating g-C3N4 nanosheets into the ultrathin NH4V4O10 nanobelts. For the optimized 50-CNNS/NH4V4O10, the removal rate is 92% for 10 mg & sdot;L-1 CIP under simulated solar light, far better than the separated components CNNS and NH4V4O10. More -over, the wide degraded concentration of CIP ranges from 5 to 40 mg & sdot;L-1 devotes a prospect of practical application. The mechanism investigation confirms the intercalating action can break the interlaminar bonding linkage of NH4, which increases the surface NH4+ content and promotes the steered adsorption capacity toward ciprofloxacin through binding to F- in CIP via H-bonding. This work provides a novel design idea for constructing 2D/2D intercalated nanocomposite for the application in the removal of the deleterious fluoric-containing organic pollutants in water environment.