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• W3046901081 endingPage "109666" @default.
• W3046901081 startingPage "109666" @default.
• W3046901081 abstract "In this study, pure cadmium oxide (CdO) nanoparticles and mixed gadolinium oxide (Gd 2 O 3 )–CdO nanocomposites with different Gd 2 O 3 contents (0–15%) were synthesized by a facile precipitation technique followed by calcined treatment. The X-ray diffraction analysis illustrated that all samples had high cubic-phase purity and a good crystallinity. Further support for the formation of highly pure CdO and Gd 2 O 3 phases was obtained via infrared spectroscopy. The morphologies of pure CdO and mixed Gd 2 O 3 –CdO nanoparticles were probed by scanning electron and transmission electron microscopy, which demonstrated that the collected samples consisted of individual semi-spherical shaped entities of different particle sizes (23–31 nm). The optical band gap of the developed samples was computed based on the Tauc equation and showed a decrease from 3.41 to 2.75 eV upon increasing the Gd 2 O 3 content. The 3D fluorescence analysis showed that the quenching in the emission peak intensity with increasing Gd 2 O 3 content was due to the high separation efficiency of photogenerated electron–hole pairs. Moreover, the Gd 2 O 3 (15%)–CdO nanocomposite showed superior photodegradation efficiency (89.1%) of methylene blue compared to 44.4% for pure CdO. At pH 11.5, >3-fold enhancement in degradation rate (0.044 min −1 ) was obtained compared to natural pH 9.6. Reusability study showed stability of the Gd 2 O 3 –CdO photocatalyst in four cycles of methylene blue degradation. Trapping experiment of holes and electrons revealed extensive contribution of holes rather than electrons in producing active oxidizing species. • Gd 2 O 3 –CdO nanocomposites fabricated by facile precipitation then calcination. • The product was analyzed and characterized in detail by different techniques. • Methylene blue (MB) degradation mechanism is proposed. • Gd 2 O 3 (15%)–CdO nanocomposite has better solar-driven catalytic degradation of (MB) than pure CdO." @default.
• W3046901081 created "2020-08-07" @default.
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• W3046901081 date "2021-01-01" @default.
• W3046901081 modified "2023-10-18" @default.
• W3046901081 title "Facile synthesis and characterization of novel Gd2O3–CdO binary mixed oxide nanocomposites of highly photocatalytic activity for wastewater remediation under solar illumination" @default.
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• W3046901081 doi "https://doi.org/10.1016/j.jpcs.2020.109666" @default.
• W3046901081 hasPublicationYear "2021" @default.
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