Characterization and photoreactivity of N-, S-, and C-doped ZnO under UV and visible light illumination

Chen, Lung-Chuan; Tu, Y. H.; Wang, Yusheng; Kan, Ruei-Sian; Huang, Chao-Ming

doi:10.1016/j.jphotochem.2008.05.022

Cited by 160 publications

(60 citation statements)

References 37 publications

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“…Among these methods, band gap engineering through metal or nonmetal doping is considered as one of the most effective strategies and has been widely adopted [37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

New insight into the enhanced photocatalytic activity of N-, C- and S-doped ZnO photocatalysts

Zhang

Peng

2016

Applied Catalysis B: Environmental

508

160

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“…Among these methods, band gap engineering through metal or nonmetal doping is considered as one of the most effective strategies and has been widely adopted [37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

New insight into the enhanced photocatalytic activity of N-, C- and S-doped ZnO photocatalysts

Zhang

Peng

2016

Applied Catalysis B: Environmental

508

160

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“…This is due to the co-operative action of the codoping which was able to increase the photocatalytic activity. Several studies were stated on co-doped materials like Cd and Al [15,16], Zn and Al [17], N, S and C co-doped ZnO [18], Mn and Co [19], Ga/Al/Co codoped ZnO [20], also co-doping technique uses the reactive donors (Ga, In, and Al [21][22][23]) to the acceptor (N or Li). Also, the double doping with the grouping of N and Li has been focused for further study [24].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Detoxification of NBB Dye Over Cerium Loaded Ag–ZnO Photocatalyst Under UV-A Light Irradiation

Subash¹,

Shanthi²

2017

DJ JECF

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The Ce co-doped Ag-ZnO, expresses the photocatalyst Ce-Ag-ZnO, which was effectively produced by a simple solvothermal technique. In this catalytic process, several properties of the catalysts were taken into account to check that the catalyst gets characterized properly. These catalytic properties include X-ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FE-SEM) images, Energy Dispersive Spectrum (EDS), Diffuse Reflectance Spectra (DRS), PhotoLuminescence spectra (PL), Cyclic Voltammetry (CV) and BET surface area measurements. In our research work, the process done in solvothermal method, which synthesized Ce co-doped Ag-ZnO, the so called photocatalyst Ce-Ag-ZnO, showed a positive effect. A part of our vision to find the phototcatalytic activity of Ce-Ag-ZnO was carried out for the degradation process of Naphthol Blue Black (NBB) dye in aqueous solution as a medium under the irradiation of UV-A light. The ZnO which was present, absorbed in UV and visible region were shifted by the co-dopants. For the process of mineralization of NBB dye under UV-A light at pH value 9, the efficient one was proved to be CeAg-ZnO when compared with Ag-ZnO, Ce-ZnO, commercial ZnO, prepared ZnO, TiO 2 -P25 and TiO 2 (Merck). The impacts of operational parameters like, the amount of photocatalyst technically called as photocatalytic dosage, the concentration of the dye and initial pH value on photo mineralization of NBB dye were examined. The Chemical Oxygen Demand (COD) measurements also proved the mineralization process of Naphthol Blue Black (NBB) dye. Under UV-A light, the degradation of naphthol blue black dye is done by a degradation mechanism. The catalyst is finally proved to have the property of reusability.

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“…Lots of reports are available in nitrogen doped ZnO as an efficient visible photocatalyst [10][11][12][13]. Shifu and coworkers reported on synthesis of N-containing ZnO photocatalyst by decomposition of zinc nitrate, which shows higher photocatalytic activity than pure ZnO [10].…”

Section: Introductionmentioning

confidence: 99%

“…N-doped ZnO has exhibited photoreflectance in the region of visible light wavelength and excellent photocatalytic ability in an antibacterial test. In another study, Chen and coworkers synthesized N, S, and Cdoped ZnO from thiourea and zinc sulfate via a precipitation method [12]. The visible light activity of the N, S, C-doped ZnO samples was confirmed by degradation of phenol.…”

Section: Introductionmentioning

confidence: 99%

A twice liquid arc discharge approach for synthesis of visible-light-active nanocrystalline Ag:ZnO photocatalyst

Ashkarran

2012

Appl. Phys. A

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Ag:ZnO hybrid nanostructures were successfully prepared by a twice arc discharge method in liquid. The visible light photocatalytic activities were successfully demonstrated for the degradation of Rhodamine B (Rh. B), Methyl orange (MO), and Methylene blue (MB) as standard organic compounds under the irradiation of 90 W halogen light for 2 h. The Ag:ZnO nanostructures were characterized by X-Ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and ultraviolet-visible absorption spectroscopy (UV-Vis). The results revealed that the Ag:ZnO nanostructures extended the light absorption spectrum toward the visible region and significantly enhanced the Rh. B photodegradation under visible light irradiation. 3 mM Ag:ZnO nanostructures exhibited highest photocatalytic efficiency. It has been confirmed that the Ag:ZnO nanostructures could be excited by visible light (E < 3.3 eV). The significant enhancement in the Ag:ZnO nanostructures photocatalytic activity under visible light irradiation can be ascribed to the effect of physisorbed noble metal Ag by acting as electron traps in ZnO band gap. A mechanism for photocatalytic degradation of organic pollutant over Ag:ZnO photocatalyst was proposed based on our observations.

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Characterization and photoreactivity of N-, S-, and C-doped ZnO under UV and visible light illumination

Cited by 160 publications

References 37 publications

New insight into the enhanced photocatalytic activity of N-, C- and S-doped ZnO photocatalysts

New insight into the enhanced photocatalytic activity of N-, C- and S-doped ZnO photocatalysts

Photocatalytic Detoxification of NBB Dye Over Cerium Loaded Ag–ZnO Photocatalyst Under UV-A Light Irradiation

A twice liquid arc discharge approach for synthesis of visible-light-active nanocrystalline Ag:ZnO photocatalyst

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