Low temperature dielectric studies of zinc oxide (ZnO) nanoparticles prepared by precipitation method

Lanje, Amrut S.; Sharma, Satish J.; Ningthoujam, R. S.; Ahn, Jeung Sun; Pode, Ramchandra

doi:10.1016/j.apt.2012.08.005

Cited by 239 publications

(95 citation statements)

References 39 publications

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“…There were some bands originated from the presence of water moisture and carbon dioxide in the air in the process of making pellet. The absorption band at 1020 cm −1 could be attributed to bending vibrational modes 27 . According to Fig.…”

Section: B Ft-ir Studiesmentioning

confidence: 99%

Effect of Ag doping on structural, optical, and photocatalytic properties of ZnO nanoparticles

Hosseini

Sarsari

Kameli

et al. 2015

Journal of Alloys and Compounds

261

125

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Silver-doped ZnO nanoparticles were successfully fabricated at 400• C via a simple and rapid method based on short time solid state milling and calcination of precursor powders. The effect of Ag dilute doping on the structural, optical, and photocatalytic properties of ZnO nanoparticles was investigated by X-ray diffraction (XRD), UV-vis spectrophotometer and photoluminescence (PL) spectroscopy. X-ray analysis revealed that Ag doped ZnO solidified in hexagonal wurtzite structure. The intensity of deep level emission was reduced with increasing silver doping in PL measurement. The X-ray photoelectron spectroscopy (XPS) measurement predicted that Ag was mainly in the metallic state and ZnO was in the wurtzite structure. This metallic state accompanied by unique zinc oxide properties decolorized the methyl violet, efficiently. The first-principles calculation represented Ag deep level in ZnO with an n-type behavior, while in ZnO structure with grain boundary p-type nature via shallow states is dominant same as powder samples as studied in this present work. It was suggested that these Ag-doped ZnO nanoparticles may have good applications in optoelectronics, spintronics and wastewater treatment.

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Section: B Ft-ir Studiesmentioning

confidence: 99%

Effect of Ag doping on structural, optical, and photocatalytic properties of ZnO nanoparticles

Hosseini

Sarsari

Kameli

et al. 2015

Journal of Alloys and Compounds

261

125

View full text Add to dashboard Cite

show abstract

“…There are several methods reported in the literature for the synthesis of undoped, doped ZnO NPs and its derivatives which can be categorized into either (Chemical or Physical, co-precipitation, hydrothermal, solvothermal, emulsion and microemulsion methods etc.) [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. Among the various methods, co-precipitation is one of the most important methods to prepare the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, structural and optical properties of pure ZnO and Co doped ZnO nanoparticles prepared by the co-precipitation method

Devi¹,

Velu²

2016

J Theor Appl Phys

109

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Pure ZnO and Cobalt (Co) doped ZnO nanoparticles (NPs) were synthesized by the co-precipitation method. The synthesized nanoparticles retained the wurtzite hexagonal structure, which was confirmed by X-ray diffraction studies. From FESEM studies, ZnO and Co doped ZnO NPs showed Spherical and nanorod mixed phase and Spherical like morphology, respectively. The amount of dopant (Co 2? ) incorporated into ZnO sample was determined by EDAX. The FT-IR spectra confirmed the Zn-O stretching bands at 438 and 427 cm -1 for ZnO and Co doped ZnO NPs. From the UV-VIS spectroscopic measurements, the excitonic pecks were found around 376 and 370 nm for the respective samples. The photoluminescence measurements revealed that the broad emission was composed of seven different bands due to zinc vacancies, oxygen vacancies and surface defects. The dynamic light scattering (DLS) and Zeta potential measurements were used to find out the size and surface charges.

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“…Inc, USA. [22] Nickel nanoparticles were prepared using hydrazine hydrate as reducing agent by earlier reported method. stirrer for 1 h at 60 ºC.…”

Section: Methodsmentioning

confidence: 99%

One Pot, Solvent-Free Synthesis of Substituted 3,4-Dihydropyrimidin-2(1H)-Ones/Thiones under Microwave Irradiation (CEM) Using Reusable Nickel Nanoparticles

Vekariya

Barot

et al. 2015

ILCPA

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Abstract:A library of 3,4-dihydropyrimidin-2(1H)-ones/thiones derivatives were synthesized via Biginelli condensation reaction of β-keto esters, aryl aldehydes and urea/thiourea under solvent-free conditions utilizing nickel nanoparticles under microwave irradiation (CEM Discover). The structures of the all compounds were elucidated with the aid of elemental analysis, IR, 1H-NMR and Mass spectral data. Nickel nanoparticles can be recovered and reused five times without loss of their efficiency. Short reaction time, high yield of products and simple workup procedure, solventfree conditions and reusability of the catalyst are the superior features of this protocol.

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Low temperature dielectric studies of zinc oxide (ZnO) nanoparticles prepared by precipitation method

Cited by 239 publications

References 39 publications

Effect of Ag doping on structural, optical, and photocatalytic properties of ZnO nanoparticles

Effect of Ag doping on structural, optical, and photocatalytic properties of ZnO nanoparticles

Synthesis, structural and optical properties of pure ZnO and Co doped ZnO nanoparticles prepared by the co-precipitation method

One Pot, Solvent-Free Synthesis of Substituted 3,4-Dihydropyrimidin-2(1H)-Ones/Thiones under Microwave Irradiation (CEM) Using Reusable Nickel Nanoparticles

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