<p>In the present study, we synthesize WO<sub>3</sub>/GO/Ag using a hybrid method by combining two different methods of pulsed laser ablation in liquid and hydrothermal methods. Silver (Ag) nanoparticles with defined shapes and sizes have been produced by vertical laser ablation in an aqueous solution. Then, Ag nanoparticles in an aqueous solution were mixed with the WO<sub>3</sub>/GO nanoparticle solution at high temperatures and pressures using the hydrothermal method. The research study aimed to evaluate the photocatalytic efficiency of the sample and compare it with the pristine and binary solutions against organic dye. Compared to the photocatalytic efficiency of pristine WO<sub>3</sub> and binary WO<sub>3</sub>@GO, the ternary WO<sub>3</sub>@GO@Ag degrades 40% faster against methylene blue (MB) organic dye. Compared to binary and primary materials, the impact of the ternary is significant because all the materials complement each other. WO<sub>3</sub> helps generate electron holes and pairs and GO acts as the electron reservoir to transfer electrons to Ag to reduce recombination, producing more reactive oxygen species (ROS). Compared with previous studies in this field, this study integrates pulsed laser ablation in liquid (PLAL) with a hydrothermal method for precise control over the morphology and dispersion of AgNPs in the WO<sub>3</sub>/GO matrix. These combinations help the superior performance of the ternary composite.</p>

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Superior photocatalytic properties of WO3/GO/Ag nanocomposite produced by laser ablation and hydrothermal methods

  • Niloy Paul,
  • Tetsuro Katayama,
  • Akihiro Furube,
  • Pankaj Koinkar

摘要

In the present study, we synthesize WO3/GO/Ag using a hybrid method by combining two different methods of pulsed laser ablation in liquid and hydrothermal methods. Silver (Ag) nanoparticles with defined shapes and sizes have been produced by vertical laser ablation in an aqueous solution. Then, Ag nanoparticles in an aqueous solution were mixed with the WO3/GO nanoparticle solution at high temperatures and pressures using the hydrothermal method. The research study aimed to evaluate the photocatalytic efficiency of the sample and compare it with the pristine and binary solutions against organic dye. Compared to the photocatalytic efficiency of pristine WO3 and binary WO3@GO, the ternary WO3@GO@Ag degrades 40% faster against methylene blue (MB) organic dye. Compared to binary and primary materials, the impact of the ternary is significant because all the materials complement each other. WO3 helps generate electron holes and pairs and GO acts as the electron reservoir to transfer electrons to Ag to reduce recombination, producing more reactive oxygen species (ROS). Compared with previous studies in this field, this study integrates pulsed laser ablation in liquid (PLAL) with a hydrothermal method for precise control over the morphology and dispersion of AgNPs in the WO3/GO matrix. These combinations help the superior performance of the ternary composite.