Abstract
A novel 1D ultra-thin hollow P-doped g-C3N4 nanotube (P-CNt) was directly synthesized using a one-step self-assembly method with phytic acid-melamine-cyanuric acid as the precursor. The characterization results showed that P-CNt had a wider visible-light range (493 nm) and faster-photogenerated carrier separation than pristine g-C3N4, resulting in superior degradation rate (k = 0.10309 min−1) and removal efficacy (83%) in tetracycline. The band structure and the •O2– dominated reaction mechanism of P-CNt were further discussed. This work introduced a facile synergistic doping and morphology co-regulation strategy for the design of effective photocatalysts in wastewater treatment.
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