Work

Mechanistic insights into the visible light photocatalytic activity of g-C 3 N 4 /Bi 2 O 2 CO 3 –Bi 4 O 7 composites for rhodamine B degradation and hexavalent chromium reduction

Year: 2025

Type: article

Abstract: composite with 24 wt% of BO (CN/BO-24) demonstrates 92.3% rhodamine B (RhB) dye degradation in 25 min under visible light irradiation, which is considerably higher compared with the corresponding % degradation realized with pristine GCN (73.4%) and BO (9.4%). The improved performance of the composite with optimal loading of BO is attributed to the reduced recombination rate of photo-generated electrons and holes, as confirmed by photoluminescence analysis, and utilization of a wider spectrum of incident light. Photo-degradation experiments performed with different scavengers reveal that peroxide radicals and holes play a decisive role in the degradation of RhB using the best composite sample (CN/BO-24). The potential of the CN/BO-24 ternary composite for the photoreduction of Cr(vi) is also explored. The fabricated composite holds promising potential in water treatment and environmental remediation.

Source: RSC Advances

DOI: 10.1039/d5ra00969c