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<p>A novel approach for synthesizing Titanium Oxide nanoparticles (NPs) using the rotating electrode in arc discharge method was developed by focusing on enhanced photocatalytic activity. Utilizing a rotating electrode as a third electrode in the arc discharge process enables us to synthesize defective titanium oxide, which facilitates the effective decoration with Ag NPs. Silver-decorated Titanium Oxide (Ag/Titanium Oxide) NPs were synthesized via a photoreduction process, improving visible light response through surface plasmon resonance which introduces new energy levels near the conduction band. The Ag/Titanium Oxide NPs exhibited high degradation of Rhodamine B dye, achieving 98% removal under visible light, attributed to the efficient charge separation. Scanning electron microscopy (SEM) revealed uniform morphology and size distribution and X-ray diffraction (XRD) also identified the crystalline phases (anatase and rutile). X-ray photoelectron spectroscopy (XPS) confirmed the chemical states and successful silver deposition. UV–visible spectroscopy along with photoluminescence (PL) analysis determined the optical properties. BET surface area measurements indicated enhanced surface area, supporting improved photocatalytic efficiency. These results highlight the potential of Ag/Titanium Oxide composite in designing advanced photocatalysts for environmental applications.</p>

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Decorated titanium oxide with Ag nanoparticles as an efficient photocatalyst under visible light: a novel synthesis approach

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月10日

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  • Noor H. Abbas,
  • Reza Rasuli,
  • Parvaneh Nakhostin Panahi

摘要

A novel approach for synthesizing Titanium Oxide nanoparticles (NPs) using the rotating electrode in arc discharge method was developed by focusing on enhanced photocatalytic activity. Utilizing a rotating electrode as a third electrode in the arc discharge process enables us to synthesize defective titanium oxide, which facilitates the effective decoration with Ag NPs. Silver-decorated Titanium Oxide (Ag/Titanium Oxide) NPs were synthesized via a photoreduction process, improving visible light response through surface plasmon resonance which introduces new energy levels near the conduction band. The Ag/Titanium Oxide NPs exhibited high degradation of Rhodamine B dye, achieving 98% removal under visible light, attributed to the efficient charge separation. Scanning electron microscopy (SEM) revealed uniform morphology and size distribution and X-ray diffraction (XRD) also identified the crystalline phases (anatase and rutile). X-ray photoelectron spectroscopy (XPS) confirmed the chemical states and successful silver deposition. UV–visible spectroscopy along with photoluminescence (PL) analysis determined the optical properties. BET surface area measurements indicated enhanced surface area, supporting improved photocatalytic efficiency. These results highlight the potential of Ag/Titanium Oxide composite in designing advanced photocatalysts for environmental applications.