Surface-enhanced Raman scattering-active Au/TiO2 films prepared by electrochemical and photochemical methods

Yang, Kuang-Hsuan; Chang, Chia‐Ming

doi:10.1016/j.materresbull.2012.10.040

Cited by 7 publications

(2 citation statements)

References 45 publications

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“…TiO 2 thin films grown using different deposition techniques, including thermal evaporation, sputtering, sol-gel, electrodeposition, chemical evaporation, and pulsed laser deposition, have been successfully obtained [3,[15][16][17][18][19][20][21]. Laser ablation and magnetron sputtering techniques has been studied separately, as independent techniques to synthesize thin films of oxides [3,[22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Au-Ag/TiO2 Thin Films Preparation by Laser Ablation and Sputtering Plasmas for Its Potential Use as Photoanodes in Electrochemical Advanced Oxidation Processes (EAOP)

et al. 2021

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Titanium dioxide (TiO2) is widely used, studied, and synthesized using different methodologies. By a modification of the material, it can be applied to wastewater treatment. A combined sputtering-laser ablation setup was used to deposit TiO2 thin films modified, individually and simultaneously, with gold (Au) and silver (Ag). To investigate the effect of the metal incorporation in titanium and its impact on the photocatalytic activity, with dye discoloration as a pollutant compound model, the deposited films were characterized by UV–Vis, photoluminescence, and Raman spectroscopies, as well as by parallel beam X-ray diffraction. The results showed that films with different Au and Ag loads, and an 18 nm average crystallite size, were obtained. These metals have an essential effect on the deposited film’s compositional, structural, and optical properties, directly reflected in its photocatalytic activity. The photocatalytic test results using UV-Vis showed that, after 1 h of applying a 4.8 V electric voltage, a discoloration of up to 80% of malachite green (MG) was achieved, using ultraviolet (UV) light.

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Section: Introductionmentioning

confidence: 99%

Au-Ag/TiO2 Thin Films Preparation by Laser Ablation and Sputtering Plasmas for Its Potential Use as Photoanodes in Electrochemical Advanced Oxidation Processes (EAOP)

et al. 2021

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“…9 Modification of TiO2 nanostructures with noble metal has been demonstrated to be a feasible way to inhibit the charge recombination. 10,11 The conventional noble metal deposition routes are principally confined to following methods such as depositionprecipitation, 12 impregnation-calcination, 13 photoreduction, 14 and electrodeposition. 15 Nevertheless, these protocols normally involve post-thermal treatment or complicated procedures.…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Electrostatic Self-Assembly of Noble Metals on TiO<sub>2</sub> Nanostructured Films with Enhanced Photocatalytic Activity

Fu¹,

Zhang²

2014

Acta Physico-Chimica Sinica

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Photoactive TiO2 nanostructured films (i.e., nanoflowers and nanowires) have been directly synthesized on Ti sheets using an alkali-hydrothermal route. Ultrafine noble metals (i.e., Au, Pt, Pd) nanoparticles (NPs) were homogenously dispersed onto the TiO2 nanostructures using a facile low temperature electrostatic self-assembly approach. The resulting noble-metal/TiO2-nanostructured films supported on Ti sheets had an all-in-one structure with all of the virtues of a porous framework and enhanced photocatalytic activity. Ultra highresolution field-emission scanning electron microscopy (FESEM) revealed that the noble metal NPs were uniformly dispersed on the TiO2 surface with good physical separation properties. The average sizes of the loaded Au, Pt, and Pd NPs were approximately 4.0, 2.0, and 10.0 nm, respectively. Noble metal NPs were deposited not only on the film surface but also in the interior framework of the TiO2 films with a depth of more than 580 nm, as revealed by Auger electron spectroscopic (AES) in-depth profiling analysis. X-ray photoelectron spectroscopy (XPS) analysis revealed that the Pt and Pd NPs had been partially oxidized to PtOabs and

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Photocatalytic deposition of plasmonic Au nanostructures on a semiconductor substrate to enhance Raman sensitivity

Wiercigroch

Świt

Kisielewska

et al. 2020

Applied Surface Science

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Surface-enhanced Raman scattering-active Au/TiO2 films prepared by electrochemical and photochemical methods

Cited by 7 publications

References 45 publications

Au-Ag/TiO2 Thin Films Preparation by Laser Ablation and Sputtering Plasmas for Its Potential Use as Photoanodes in Electrochemical Advanced Oxidation Processes (EAOP)

Au-Ag/TiO2 Thin Films Preparation by Laser Ablation and Sputtering Plasmas for Its Potential Use as Photoanodes in Electrochemical Advanced Oxidation Processes (EAOP)

Low-Temperature Electrostatic Self-Assembly of Noble Metals on TiO<sub>2</sub> Nanostructured Films with Enhanced Photocatalytic Activity

Photocatalytic deposition of plasmonic Au nanostructures on a semiconductor substrate to enhance Raman sensitivity

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