An easy-to achieve approach for the fabrication of CdS QDs sensitized TiO2 nanotubes and their enhanced photoelectrochemical performance

Taieb, S. Ben; Pham-Truong, Thuan-Nguyen; Chaguetmi, Samiha; Naceur, J. Ben; Bardaoui, A.; Gannouni, M.; Decorse, Philippe; Mouton, Ludovic; Nowak, Sophie; Mammeri, Fayna; Chtourou, R.; Ammar, Souad

doi:10.1016/j.jphotochem.2016.09.001

Cited by 12 publications

(5 citation statements)

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“…Cadmium sulfide quantum dots (CdS QDs) are one of the most studied QDs which are composed of group II to VI element semiconductors. There is a considerable amount of information from research that can be searched and obtained from various sources regarding the preparation, properties, and applications of CdS QDs [13][14][15]. Cadmium sulfide-based quantum dots are promising materials for the development of optics, optoelectronics, medicine, and sensor technology [16,17].…”

Section: Introductionmentioning

confidence: 99%

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

Saleviter

Fen

Omar

et al. 2018

Journal of Nanomaterials

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The aim of this study is to prepare and study the cadmium sulfide quantum dot-graphene oxide-chitosan composite thin film. This composite material was coated on top of the gold layer by a spin-coating technique as a modification of the active layer for metal ion sensing using surface plasmon resonance spectroscopy (SPR). The composite material was prepared using a simple wet solution mixing method. An atomic force microscope (AFM) shows that the addition of GO increased the roughness of the composite thin film and the presence of CdS QDs cannot be observed as the size of the QDs are very small. The morphology of the nanocomposite material was observed using transmission electron microscopy (TEM). From the TEM images, it is observed that the materials mixed to form a nanocomposite material. The optical properties of the thin film via UV-Vis spectroscopy shows that the absorbance peaks of the thin film can be observed around 220 nm to near 300 nm, and the band gaps are around 4.0 eV. Lastly, the prepared thin film was tested as an active layer for metal ion detection via surface plasmon resonance (SPR), where the angle shift was observed to show that the prepared thin film has high potential for Co2+ ion detection.

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Section: Introductionmentioning

confidence: 99%

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

Saleviter

Fen

Omar

et al. 2018

Journal of Nanomaterials

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“…The peaks at 413.4/406.6 eV are ascribed to CdS, and the other at 414.8/408.0 eV are combined with TAA ligands. 47,48 When the CdS QDs are loaded on a-TiO 2 , the Cd 3d 3/2 and Cd 3d 5/2 appears as a single peaks in agreement with the remove of TAA, and the strong interactions cause the peak shi to 411.6/404.8 eV. Furthermore, the Cd 3d peak is shied to 410.9/404.1 eV in CdS/Ag/a-TiO 2 due to the chemical bonding between S and Ag as the CdS QDs are loaded on Ag/a-TiO 2 , it means that the strong interactions between CdS QDs, Ag NPs and a-TiO 2 cause the peak shi of Cd 3d.…”

Section: Synthesis and Characterizations Of Compositesmentioning

confidence: 99%

“…53 When Ag NPs are added into CdS/a-TiO 2 , the synergistic effect of the LSPR with the light absorption of CdS QDs promotes the absorption of CdS/Ag/a-TiO 2 and CdS/Ag/c-TiO 2 composites extends over wider Vis-light region. 47,54,55 The band gap (E g ) of CdS QDs, CdS/a-TiO 2 , and CdS/Ag/a-TiO 2 is respectively estimated to be 2.5, 3.1, and 2.7 eV by Tauc plot of (Ahn) 2 vs. hn (Fig. S4a †).…”

Section: Synthesis and Characterizations Of Compositesmentioning

confidence: 99%

New insight into the selective photocatalytic oxidation of RhB through a strategy of modulating radical generation

et al. 2018

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“…(Continues) Schmuki [184] [190] 2017 17 [56] with permission from IOP Publishing a. Sonochemical-assisted chelating agent-driven anodization. In this method, anodization was conducted under ultrasonication (100 W, 42 kHz) by immersing the electrodes in electrolyte that can feel the sound waves (Figure 9a).…”

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confidence: 99%

A critical review on the variations in anodization parameters toward microstructural formation of TiO₂ nanotubes

David

Dev

Wilson

et al. 2021

Electrochemical Science Adv

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Over the past couple of decades (2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018)(2019)(2020), titania (TiO 2 ) nanotubes (NTs) have been prepared by anodization techniques. The architecture of TiO 2 NTs is predominantly dependent on the potential, current density, electrolyte and time, in addition to other few minor factors. This review is about the state-of-the-art formation of TiO 2 NTs involving anodization technique. In fact, the principal motive is to briefly discuss the slight variations involved within the anodization technique in terms of applied potential and/or applied current density and the resultant outcome. An initial overview of the technique is given so as to understand the beauty of the reactions when variations are incorporated. A minute alteration in the conventional anodization technique results in the formation of highly different morphological features. There are about 30 different miniscule modifications in the anodization processes that have been reported, thus, far. The review primarily introduces and outlines the various anodization techniques involved in growing TiO 2 NTs and the consequent variations arising from these introduced variations. This review is a tribute to the bountiful and fruitful researches based on modifying anodization that was conducted in the recently passed bi-decades.

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An easy-to achieve approach for the fabrication of CdS QDs sensitized TiO2 nanotubes and their enhanced photoelectrochemical performance

Cited by 12 publications

References 43 publications

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

New insight into the selective photocatalytic oxidation of RhB through a strategy of modulating radical generation

A critical review on the variations in anodization parameters toward microstructural formation of TiO₂ nanotubes

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An easy-to achieve approach for the fabrication of CdS QDs sensitized TiO2 nanotubes and their enhanced photoelectrochemical performance

Cited by 12 publications

References 43 publications

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

New insight into the selective photocatalytic oxidation of RhB through a strategy of modulating radical generation

A critical review on the variations in anodization parameters toward microstructural formation of TiO2 nanotubes

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A critical review on the variations in anodization parameters toward microstructural formation of TiO₂ nanotubes