Journal ArticleDOI
Origin of the Enhanced Photocatalytic Activities of Semiconductors: A Case Study of ZnO Doped with Mg2+
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A series of Zn1−xMgxO samples with dopant content ranging from x = 0 to 0.10 were prepared by a novel rheological phase reaction route as discussed by the authors.Abstract:
A series of Zn1−xMgxO samples with dopant content ranging from x = 0 to 0.10 were prepared by a novel rheological phase reaction route. All Zn1−xMgxO samples were investigated by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, inductive coupled plasma optical emission spectroscopy, infrared and UV−vis absorption spectroscopy, and the Barrett−Emmett−-Teller technique. The effects of Mg2+ doping in ZnO on the electronic structures and photogradation of methylene blue dye solution were investigated experimentally and theoretically. All Zn1−xMgxO samples exhibit high photoactivities comparable to Degussa P-25, which first increased with the Mg doing content up to x = 0.05, and then slightly decreased with further doping of Mg to x = 0.10. Density function theory calculations revealed that the substitutions of Mg for Zn ions in the wurtzite ZnO structure largely affected the conduction band, but left the valence band nearly unchanged. The bottom of the conduction band shifted...read more
Citations
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Enhancement of photocurrent and photocatalytic activity of ZnO hybridized with graphite-like C3N4
TL;DR: In this article, a ZnO photocatalyst was hybridized with graphite-like C3N4 via a monolayer-dispersed method, and the photocurrent of C 3N4/ZnO was enhanced by 5 times under UV irradiation and a photocurrent under visible light irradiation.
Journal ArticleDOI
Review on the improvement of the photocatalytic and antibacterial activities of ZnO
TL;DR: In this paper, a review of the application of photocatalytic degradation and the antibacterial properties of zinc oxide (ZnO) nanomaterials is reviewed, and the main methods that improve antibacterial activities are coating inorganic or organic antimicrobial agents, doping ZnO, and tuning the size, morphological characteristics, and concentration of ZnOs.
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Photocorrosion Inhibition and Photoactivity Enhancement for Zinc Oxide via Hybridization with Monolayer Polyaniline
TL;DR: In this article, a PANI-hybridized zinc oxide (ZnO)-polyaniline (PANI) was used for the degradation of the methylene blue (MB) under ultraviolet and visible light irradiation.
Journal ArticleDOI
Improving the photocatalytic activity and anti-photocorrosion of semiconductor ZnO by coupling with versatile carbon
TL;DR: The recent advances and current status of enhancing the photocatalytic activity and anti-photocorrosion of semiconductor ZnO by coupling with versatile carbon materials, e.g., C60, carbon nanotube, graphene and other carbon materials are described.
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First Principles Calculations of Electronic Band Structure and Optical Properties of Cr-Doped ZnO
TL;DR: In this article, the electronic band structure and optical properties of Cr-doped ZnO were studied using the density functional method within the generalized-gradient approximation, and three configurations with the substitution of Zn by one and two Cr atoms in different positions were considered.
References
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Journal ArticleDOI
First-principles simulation: ideas, illustrations and the CASTEP code
Matthew D. Segall,Philip J. D. Lindan,Matt Probert,Chris J. Pickard,P. J. Hasnip,Stewart J. Clark,Mike C. Payne +6 more
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Journal ArticleDOI
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TL;DR: In this article, the presence of metal ion dopants in the TiO_2 crystalline matrix significantly influences photoreactivity, charge carrier recombination rates, and interfacial electron-transfer rates.
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