Photocatalytic activity of TiO2 nanofibers sensitized with ZnS quantum dots

Chaguetmi, Samiha; Mammeri, Fayna; Nowak, Sophie; Decorse, Philippe; Lecoq, Hélène; Gaceur, Mériem; Naceur, J. Ben; Achour, S.; Chtourou, R.; Ammar, Souad

doi:10.1039/c2ra21684a

Cited by 54 publications

(21 citation statements)

References 53 publications

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“…The thin ZnSe layer may escape from a routine structural analysis of incident X-rays. Similar results are given by S. Chaguetmi et al [28]. furthermore, a slight shift to small 2θ angle for ZnO pattern is presented as a result of the tensile strain produced by ZnSe layer into ZnO nanowires.…”

Section: Morphological Propertiessupporting

confidence: 88%

Synthesis of core/shell ZnO/ZnSe nanowires using novel low cost two-steps electrochemical deposition technique

Ghoul

Braiek

Brayek

et al. 2015

Journal of Alloys and Compounds

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Section: Morphological Propertiessupporting

confidence: 88%

Synthesis of core/shell ZnO/ZnSe nanowires using novel low cost two-steps electrochemical deposition technique

Ghoul

Braiek

Brayek

et al. 2015

Journal of Alloys and Compounds

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“…7), and the band gap obtained from optical measurements, we are able to get the relative position of the conductive band surface. Recently, this phenomena was obtained by several authors in the literature described the electron transfer in the heterostructure between TiO 2 and another semiconductors [16,[42][43][44]. This suggestion will be confirmed in the next part by photoelectrochemical study of ZnIn 2 S 4 /TiO 2 heterostructure .…”

Section: Photocatalytic Activitiesmentioning

confidence: 55%

Electrodeposited ZnIn2S4 onto TiO2 thin films for semiconductor-sensitized photocatalytic and photoelectrochemical applications

Assaker

Gannouni

Naceur

et al. 2015

Applied Surface Science

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“…Such a feature is commonly observed in ZnS nanocrystals because of their small size and high surface reactivity. 15,23,24 The intensity ratio between the S 2À and SO 4 2À peaks increases signicantly from ZOS8 to ZOS48. It is about 15% in the former and close to 0% in the latter, suggesting that the ZnS layer is less oxidized when its thickness increases.…”

Section: -22mentioning

confidence: 99%

The structural and the photoelectrochemical properties of ZnO–ZnS/ITO 1D hetero-junctions prepared by tandem electrodeposition and surface sulfidation: on the material processing limits

et al. 2018

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ZnO-ZnS 1D hetero-nanostructures were prepared by an easy and scalable processing route. It consists of ZnO nanorod electrodeposition on ITO substrate and surface sulfidation by ion exchange in an aqueous Na 2 S solution. Increasing the treatment contact time (t c ) from 8 to 48 h involves different ZnS growth mechanisms leading to different structural and microstructural rod characteristics, even if the overall size does not change significantly. Grazing X-ray diffraction, high-resolution microscopy, energy-dispersive spectrometry and X-ray photoelectron spectroscopy describe the outer surface layer as a poly-and nanocrystalline ZnS blende shell whose thickness and roughness increase with t c . The ZnO wurtzite-ZnS blende interface goes from continuous and dense, at short t c , to discontinuous and porous at long t c , indicating that ZnS formation proceeds in a more complex way than a simple S 2À /O 2À ion exchange over the treatment time. This feature has significant consequences for the photoelectrochemical performance of these materials when they are used as photoanodes in a typical light-assisted water splitting experiment. A photocurrent (J p ) fluctuation of 45% for less than 5 min of operation is observed for the sample prepared with a long sulfidation time while it does not exceed 15% for that obtained with a short one, underlining the importance of the material processing conditions on the preparation of valuable photoanodes.

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Photocatalytic activity of TiO2 nanofibers sensitized with ZnS quantum dots

Cited by 54 publications

References 53 publications

Synthesis of core/shell ZnO/ZnSe nanowires using novel low cost two-steps electrochemical deposition technique

Synthesis of core/shell ZnO/ZnSe nanowires using novel low cost two-steps electrochemical deposition technique

Electrodeposited ZnIn2S4 onto TiO2 thin films for semiconductor-sensitized photocatalytic and photoelectrochemical applications

The structural and the photoelectrochemical properties of ZnO–ZnS/ITO 1D hetero-junctions prepared by tandem electrodeposition and surface sulfidation: on the material processing limits

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