ArticleScientific reports2025
Nitrogen and phosphorus Co-doped ZnO-CdO nanocomposite with boosted photocatalytic degradation of crystal violet.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Nitrogen (N) and phosphorus (P) co-doped ZnO-CdO nanocomposites were synthesized from bioprecursors such as rice (O. Sativa L.), chickpea (Cicer arietinum L.), soybean (G. max (L.) Merr) and sesame (Sesamum indicum L.) through self-doping into the ZnO-CdO composite. The as synthesized composites were characterized using PXRD, XPS, TGA, SEM, Cs-corrected (S) TEM, EDS, FT-IR, AAS and UV-vis spectrophotometer. Effect of biogenic doping on the band structures of the binary heterojunction was also studied using Density Functional Theory (DFT). The theoretical results showed that NP co-doping in ZnO-CdO nanocomposite improves the absorption edge to longer wavelengths in line with the experimental finding obtained from UV-vis measurement. Biogenic NP co-doped ZnO-CdO nanocomposites showed greater photocatalytic activity compared to the undoped congeners under visible light irradiations. Comparatively, photocatalytic activity of biogenic NP co-doped ZnO-CdO samples showed the order: soybean-ZC > chickpea-ZC > rice-ZC > sesame-ZC at optimal conditions under visible light irradiation. The binary ZnO-CdO nanocomposite also showed better photocatalytic activity compared to the host crystal ZnO under the same experimental conditions. Highest photocatalytic degradation efficiency of biogenic NP co-doped ZnO-CdO could be attributed to the lower rate of recombination of the photogenerated electrons and holes as well as its lower band gap energy and good reusability.
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