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Journals / Journal of Physical Chemistry and Functional Materials / 2026 / Volume: 6 Issue: 1

Carbon-Tunable p-type ZnO Nanoparticles for Enhanced Photocatalytic Removal of Eriochrome Black T

Auwal Yushau(Bayero University, Kano)0000-0002-1713-9434
Umar Gaya(Bayero University, Kano)0000-0002-2396-3761
Pages
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Publication Date
2023-06-21
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The resulting C-ZnO was a p-type with a good pH at zero-point charge that permits the substantial removal of EBT by C-doped under visible light irradiation over a wide range of initial pH.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Zinc oxide-mediated photocatalysis is a promising alternative to TiO2 photocatalysis, especially for the purpose of removal of recalcitrant organic dye pollutants.
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Key Findings & Data:The 5wt % C-doped ZnO showed remarkable visible light-photocatalytic activity based on the degradation of Eriochrome Black T (EBT), and exhibits the best point of zero charge (pHpzc) for a favorable adsorption equilibrium.
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Conclusion & Impact:The resulting C-ZnO was a p-type with a good pH at zero-point charge that permits the substantial removal of EBT by C-doped under visible light irradiation over a wide range of initial pH.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:-type ZnO Doping · Mechanochemical · Photocatalysis

Abstract

Zinc oxide-mediated photocatalysis is a promising alternative to TiO2 photocatalysis, especially for the purpose of removal of recalcitrant organic dye pollutants. Highly crystalline, nanoscopic carbon-doped ZnO was successfully synthesized via combined precipitation and mechanochemical approach and characterized using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray (EDX) and Fourier transform infrared (FTIR) spectrometry. The obtained photocatalysts depict plate-like morphology and hexagonal wurtzite structure. The XRD, SEM, and FTIR analyses were in good agreement with EDX results. The 5wt % C-doped ZnO showed remarkable visible light-photocatalytic activity based on the degradation of Eriochrome Black T (EBT), and exhibits the best point of zero charge (pHpzc) for a favorable adsorption equilibrium. This degradation process was optimized at 97 % using response surface methodology (RSM) using a 0.1 g C-ZnO, 5.00 mg/L EBT and pH 11. The associated kinetic data fit the pseudo-first-order kinetic model. The resulting C-ZnO was a p-type with a good pH at zero-point charge that permits the substantial removal of EBT by C-doped under visible light irradiation over a wide range of initial pH.

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Cite This Article

Yushau, A., Gaya, U. (2023). Carbon-Tunable p-type ZnO Nanoparticles for Enhanced Photocatalytic Removal of Eriochrome Black T. Journal of Physical Chemistry and Functional Materials, Volume: 6 Issue: 1. https://doi.org/10.54565/jphcfum.1253804

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