Preparation, structure and properties of Mn-doped ZnO rod arrays

Wu, Dianwu; Huang, Zhongbing; Yin, Guangfu; Yao, Yadong; Liao, Xiaoming; Han, Dong Ju; Huang, Xia; Gu, Jianwen

doi:10.1039/b909780e

Cited by 44 publications

(34 citation statements)

References 34 publications

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“…In this work, for Zn 1− Mn O ( = 0.03, 0.05, 0.10, 0.15, and 0.20), the values of absorption were found to be blueshifted at 443, 450, 462, 470, and 481 cm −1 , respectively. Undoubtedly, this can prove that the Zn-O-Zn network was perturbed by the presence of Mn in its environment with the change in the peak position of the ZnO absorption bands [12].…”

Section: Ftir Analysismentioning

confidence: 99%

Tunable Band Gap Energy of Mn‐Doped ZnO Nanoparticles Using the Coprecipitation Technique

Tan

Lai

Hamid

2014

Journal of Nanomaterials

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A simple coprecipitation technique was introduced to form manganese (Mn) doped on zinc oxide (ZnO) nanoparticles effectively. Based on our morphological studies, it was revealed that mean particle size was increased while bigger agglomeration of nanoparticles could be observed as the amount of concentration of Mn was increased. Interestingly, it was found that the position of the absorption spectra was shifted towards the lower wavelength (UV region) as correlated with the increasing of Mn dopants concentration into ZnO nanoparticles. This result inferred that optimum content of Mn doped into the ZnO nanoparticles was crucial in controlling the visible/UV-responsive of samples. In the present study, 3 mol% of Mn dopants into the ZnO nanoparticles exhibited the better UV as well as visible light-responsive as compared to the other samples. The main reason might be attributed to the modification of electronic structure of ZnO nanoparticles via lattice doping of Mn ions into the lattice, whereas excessive Mn dopants doped on ZnO nanoparticles caused the strong UV-responsive due to the more 3d orbitals in the valence band.

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Section: Ftir Analysismentioning

confidence: 99%

Tunable Band Gap Energy of Mn‐Doped ZnO Nanoparticles Using the Coprecipitation Technique

Tan

Lai

Hamid

2014

Journal of Nanomaterials

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“…Due to its inexpensiveness, nontoxic and environmentally safe, it has attracted more attention over last few years. Recently, modified ZnO was prepared by doping with transition metals such as Ag [10], Mn [11], Fe [12], Co [13], Cr [14], Al [15] and Pd [16]. The results of these transition metals doped ZnO show that the optical, magnetic and electrical properties changed with the change in concentration of transition metal.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Cu Doped ZnO Nanoparticles: Crystallographic, Optical, FTIR, Morphological and Photocatalytic Study

Labhane¹,

Huse²,

Patle³

et al. 2015

MSCE

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Nanoparticles of Zn1−xCuxO system with nominal compositions x = 0.0, 0.01, 0.02 and 0.03 were prepared by co-precipitation method at room temperature. Structural, morphological, optical and chemical species of grown crystals were investigated by X-ray diffraction (XRD) technique, Scanning Electron Microscopy (SEM), UV-visible and FTIR spectroscopy, respectively. XRD analysis confirms that all samples have hexagonal structure with no impurity phases which suggest that Cu ion successfully incorporated into the regular ZnO crystal structure. The lattice parameters, volume of unit cell, X-ray density, atomic packing fraction, c/a ratio, and grain size were calculated from XRD pattern of pure and Cu doped ZnO samples and it was found that the grain size was in the range of 23 nm to 29 nm. The strain in pure and Cu doped ZnO samples was calculated by W-H analysis. Optical properties of Zn1−xCuxO samples were studied by using UV-vis spectrophotometer. Optical absorption spectra show that the band gap decreases with increasing Cu contents. The functional group and chemical interactions of Zn1−xCuxO samples were also determined at various peaks using FTIR data and observed that the functional groups corresponding to the Zn-O bands in the samples. The photocatalytic activities of the samples were investigated by oxidation of methylene blue under UV light illumination in batch reactor. The scavenger study was carried out to find out main reactive species responsible for the degradation of dyes.

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“…87‐0713). Hexagonal structure of ZnO was confirmed by the 102 crystalline peaks46 and average crystal size was calculated using Debye‐Scherer ( D = 0.94λ/β cosθ) formula. The average crystal size of synthesized ZnO nanoparticle is 37 nm.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of sulfated β‐cyclodextrin/cotton/ZnO nano composite for improve the antibacterial activity and dyeability with Azadirachta indica

Muthusubramanian

Selvam

Ramanujam

2012

J of Applied Polymer Sci

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The sulfated b-cyclodextrin (sb-cd) was prepared from b-cyclodextrin and the sb-cd was crosslinked with cotton fabric using ethylenediaminetetraacetic acid (EDTA) as crosslinker. After crosslinking, the synthesized ZnO nanoparticles were padded on this fabric surface. Then, the treated fabrics were dyed with neem extract. The synthesized polymer, crosslinked and nanoparticle-treated cotton fabrics were characterized using fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), particle sized analyzer, and transmission electron microscopy (TEM) studies. The antibacterial test was done against Staphylococcus aureus and Escherichia coli bacterium. The composite coated with neem dyed cotton fabric has exhibited 71% of dye uptake with 2-3 fastness grade and it has 99% of antibacterial efficiency for S. aureus and 97% for E. coli bacterium.

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Preparation, structure and properties of Mn-doped ZnO rod arrays

Cited by 44 publications

References 34 publications

Tunable Band Gap Energy of Mn‐Doped ZnO Nanoparticles Using the Coprecipitation Technique

Tunable Band Gap Energy of Mn‐Doped ZnO Nanoparticles Using the Coprecipitation Technique

Synthesis of Cu Doped ZnO Nanoparticles: Crystallographic, Optical, FTIR, Morphological and Photocatalytic Study

Synthesis of sulfated β‐cyclodextrin/cotton/ZnO nano composite for improve the antibacterial activity and dyeability with Azadirachta indica

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