Photocatalytic Zn-doped TiO2 films prepared by DC reactive magnetron sputtering

Zhang, Wenjie; Zhu, Shenglong; Liu, Ying; Wang, Fuhui

doi:10.1016/j.vacuum.2007.04.036

Cited by 81 publications

(37 citation statements)

References 34 publications

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“…However, as the doping concentration of Al increases up to 2 at.%, the intensity of (002) plane is decreased, while that of (101) plane increases, indicating a change in growth orientation from c-axis into isotropic growth (Liu and Lian 2007). The increase of the intensity of (002), (101) and (100) reflections with increasing doping concentration at 4 at.% indicates the improvement in the crystallinity (Zhang et al 2008). The intensities of (100) (002) and (101) are further enhanced for 6 at.%, because Al 3?…”

Section: Resultsmentioning

confidence: 98%

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

et al. 2015

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Aluminum-doped zinc oxide (ZnO:Al) thin films were deposited onto glass substrates using spray pyrolysis technique with the substrate temperature of 400°C. X-ray diffraction analysis indicated that the films were polycrystalline with hexagonal wurtzite structure preferentially oriented along (002) direction. Surface morphology of the films obtained by scanning electron microscopy showed that the grains were of nanoscale size with porous nature for 6 at.% of Al. Atomic force microscopy observations revealed that the particles size and surface roughness of the films decreased with Al-doping. Optical measurements indicated that ZnO:Al (6 at.%) exhibited a band gap of 3.11 eV, which is lower than that of pure ZnO film, i.e. 3.42 eV. Photoluminescence analysis showed weak NBE emission at 396 nm for Al-doped films. The low resistivity, high hall mobility and carrier concentration values were obtained at a doping ratio of 6 at.% of Al. The effective incorporation of 6 at.% of Al into ZnO lattice by occupying Zn sites yielded a well-pronounced antibacterial activity against Staphylococcus aureus.

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Section: Resultsmentioning

confidence: 98%

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

et al. 2015

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“…This may be ascribed to the slight inhibition of doped Zn on the growth of TiO 2 crystal during the thermal treatment process. [21] The crystallite size D was about 7.2, 6.6, 6.1, and 5.7 nm, respectively, which was estimated from the half width (β) of the peak at 2θ = 25.4 • by the Scherrer formula: D = kλ/(β cos θ ). [25] The XRD results give no information about the zinc species.…”

Section: Measurements Of Xrd and Xpsmentioning

confidence: 99%

Improved surface‐enhanced Raman scattering properties of TiO₂ nanoparticles by Zn dopant

Yang

Ruan

et al. 2010

J Raman Spectroscopy

105

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In this paper, pure and Zn-doped TiO 2 nanoparticles (NPs) with various content of Zn were prepared by a sol-hydrothermal method and were employed as active substrates for surface-enhanced Raman scattering (SERS). On the 3% Zn-doped TiO 2 substrate, 4-mercaptobenzoic acid(4-MBA) molecules exhibit a higher SERS intensity by a factor of 6, as compared with the native enhancement of 4-MBA adsorbed on undoped TiO 2 NPs. Moreover, the higher SERS activity was still observed on the 3% Zn-doped TiO 2 NPs at temperature even up to 125 • C. These results indicate that an appropriate amount of Zn doping can improve the SERS performances of TiO 2 SERS-active substrates. The introduction of Zn dopant can enrich the surface states (defects) of TiO 2 and improve the separation efficiency of photo-generated charge carriers (electrons and holes) in TiO 2 , according to measurements of X-ray diffraction, UV-visible diffuse reflectance spectroscopy, and photoluminescence, which are responsible for the influence of Zn dopant on the improved SERS performances of TiO 2 NPs.

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“…For instance, Aal et al have synthesized TiO 2 /ZnO nanopowders by hydrothermal method [1]. Zhang et al prepared Zn-doped TiO 2 film by means of pulsed DC reactive magnetron sputtering method using Ti and Zn mixed target [12]. Kim ZnO coated TiO 2 nanoparticles for use in flexible dye-sensitized solar cells [13].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of TiO2, ZnO, and TiO2/ZnO nanofilms via sol–gel process

Tian

Chen

Dai

et al. 2009

Ceramics International

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Photocatalytic Zn-doped TiO2 films prepared by DC reactive magnetron sputtering

Cited by 81 publications

References 34 publications

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

Improved surface‐enhanced Raman scattering properties of TiO₂ nanoparticles by Zn dopant

Preparation and characterization of TiO2, ZnO, and TiO2/ZnO nanofilms via sol–gel process

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Photocatalytic Zn-doped TiO2 films prepared by DC reactive magnetron sputtering

Cited by 81 publications

References 34 publications

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

Improved surface‐enhanced Raman scattering properties of TiO2 nanoparticles by Zn dopant

Preparation and characterization of TiO2, ZnO, and TiO2/ZnO nanofilms via sol–gel process

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Product

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Improved surface‐enhanced Raman scattering properties of TiO₂ nanoparticles by Zn dopant