التفاصيل البيبلوغرافية
| العنوان: |
Efficient photodecolorization of Congo red by CaMgO2@g-C3N4 nanocomposite. |
| المؤلفون: |
Aldaghri, Osamah, Alqarni, Laila, Modwi, Abueliz, Idriss, Hajo, Abumousa, Rasha, Ali, Mohammed Khalil Mohammed, Ibnaouf, Khalid Hassan, Bououdina, Mohamed |
| المصدر: |
Journal of Materials Science: Materials in Electronics; Mar2024, Vol. 35 Issue 7, p1-16, 16p |
| مصطلحات موضوعية: |
CONGO red (Staining dye), NANOCOMPOSITE materials, BAND gaps, HYDROXYL group, CATALYSIS, PHOTODEGRADATION, COLOR removal (Sewage purification) |
| مستخلص: |
Artificial dyes resist conventional oxidation and reduction processes. The current study aims to investigate the utilization of ultrasonically prepared CaMgO2@g-C3N4 nanocomposite for Congo red dye decolorization. The XRD analysis reveals the formation of a multiphase composite containing Ca and Mg oxides alongside g-C3N4. The coupling of MgO and CaO to g-C3N4 nanosheets is confirmed by TEM/EDX and XPS analysis. The nanocomposite manifests a high photocatalytic degradation of Congo red dye in an aqueous solution (99 mg/g) with an insignificant retention rate (∼ 5%) by virtue of its large surface area (73 m2/g), low band gap energy (2.85 eV) as well as the photogenerated holes, electrons, and hydroxyl radical involvement. The dye photodecolorization displays a rate constant of 0.07092 min−1 and a decolorization rate of 99%. Furthermore, the photodegradation kinetics fits well with the pseudo-first-order model, and mechanistic modeling suggests a Z-scheme mechanism. This research highlights the powerful catalytic effect of CaMgO2@g-C3N4 for synthetic dyes' decolorization. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
