Abstract
The combination of graphitic carbon nitride (g-C3N4) and carbonized material is a promising strategy to improve g-C3N4’s visible light absorption and charge separation efficiency. Herein, a carbonized cotton fiber (CCF) modified pure g-C3N4 (PCN/CCF) composite photocatalyst is prepared by a one-step calcination method for visible-light-driven photocatalytic. Due to CCF excellent electronic transmission and strong absorption of visible light, the green-cheap carbonized cotton fiber in the composite photocatalyst (PCN/CCF) can effectively enhance charge separation efficiency and enhances the visible light absorption of PCN. And the degradation efficiency of PCN/CCF-6 to methyl orange can reach 90% in 1 h under visible light irradiation. The photodegradation constant of PCN/CCF-6 is 0.03105 min−1, which is 8 times that of bulk carbon nitride (BCN) and twice that of the pure g-C3N4 (PCN). This catalyst also shows excellent degradation performance against other pollutants (Rh B, TC). PCN/CCF provide an effective way for carbon-based materials to assist high-efficiency photocatalytic degradation of organic pollutants.
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