Comparison of structural and luminescence properties of Dy2O3 nanopowders synthesized by co-precipitation and green combustion routes

Chandrasekhar, M.; Nagabhushana, H.; Sudheerkumar, K.H.; Dhananjaya, N.; Sharma, S.C.; Kavyashree, D.; Shivakumara, C.; Nagabhushana, B.M.

doi:10.1016/j.materresbull.2014.04.013

Cited by 54 publications

(13 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8), the peak located at 3433 cm -1 is corresponding to the v(OH) stretching of the surface adsorbed water molecules [2]. The absorption peak at 1527 cm -1 is attributed to the ν 3 mode of CO 3 2− [19]. The characteristic peaks of the Ho 2 O 3 centered at 560 and 500 cm -1 [18] (Fig.…”

Section: Resultsmentioning

confidence: 96%

Facile hydrothermal and novel preparation of nanostructured Ho2O3 for photodegradation of eriochrome black T dye as water pollutant

Mortazavi‐Derazkola

Zinatloo-Ajabshir

Salavati‐Niasari

2017

Advanced Powder Technology

View full text Add to dashboard Cite

Ho(OH) 3 nanostructures were synthesized via a new facile hydrothermal reaction between Ho(NO 3) 3 .6H 2 O and tetraethylenepentamine (tepa) as novel precipitator in presence of bis-(2-hydroxy-1-naphthaldehyde)-ophenylenediamine Schiff base compound as new capping agent. Pure Ho 2 O 3 nanostructures were prepared by thermal conversion of Ho(OH) 3 nanostructures in air at 600 °C for 4h. The as-obtained nanostructured samples were characterized by field emission scanning electron microscopy (FESEM), energy dispersive X-ray microanalysis (EDX), X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy, and Fourier transform infrared (FT-IR) spectroscopy. Effects of reaction temperature, reaction duration and Schiff base compound as new capping agent on the shape and particle size of the final samples were studied. It was found that the particle size and shape of the samples could be controlled by setting these factors. The photocatalytic behavior of as-obtained Ho 2 O 3 nanostructures was also examined by photodegradation of eriochrome black T dye as water pollutant.

show abstract

Section: Resultsmentioning

confidence: 96%

Facile hydrothermal and novel preparation of nanostructured Ho2O3 for photodegradation of eriochrome black T dye as water pollutant

Mortazavi‐Derazkola

Zinatloo-Ajabshir

Salavati‐Niasari

2017

Advanced Powder Technology

View full text Add to dashboard Cite

show abstract

“…5). The bands seen around 900, 1388 and 1496 cm -1 are assigned to carbonate group [36]. The band corresponding to the stretching vibration of OH group of adsorbed H 2 O is seen at 3427 cm -1 [31,37].…”

Section: Resultsmentioning

confidence: 96%

Sonochemical synthesis, characterization and photodegradation of organic pollutant over Nd2O3 nanostructures prepared via a new simple route

Zinatloo-Ajabshir

Mortazavi‐Derazkola

Niasari

2017

Separation and Purification Technology

View full text Add to dashboard Cite

For the first time, a new simple route of synthesizing Nd 2 O 3 nanostructures has been developed with applying the sonochemical process. As a novel precipitator, 2,2-dimethyl-1,3-propanediamine was applied in the presence of Nd(NO 3) 3 .6H 2 O to prepare neodymium oxide. In order to control the shape, size and photocatalytic activity of neodymium oxide products, the type of capping agents have been altered. The synthesized nanostructured neodymium oxide has been characterized with the aid of DRS, FT-IR, XRD, TEM, FESEM and EDX. It was demonstrated that shape, size and photocatalytic activity of the sonochemically fabricated neodymium oxide were under the influence of the type of capping agent. The photocatalytic decomposition of eosin Y pollutant has been performed to compare the photocatalytic efficiencies of neodymium oxide nano and bulk structures under ultraviolet illumination.

show abstract

“…Figure 2 shows the FTIR transmittance spectra of the prepared materials, which are characterized by the appearance of several peaks corresponding to the mid-IR vibrational modes of the metal-oxygen bonds. [25][26][27][28][29][30][31][32][33][34]. It is also observed that the FTIR spectrum of DSW is shifted to a higher wavenumber region as compared to the spectrum of NSW, which confirms the replacement of Sm 3+ ion by Nd 3+ and Dy 3+ ions.…”

Section: Ftir Spectroscopymentioning

confidence: 93%

Preparation, characterization and properties of LnSmWO$$_{6}$$ (Ln = Nd and Dy) nanofunctional ceramics

Jayalekshmy¹,

Thomas²,

Solomon³

2019

Bull Mater Sci

View full text Add to dashboard Cite

Isovalent substitution of lanthanide ions in Ln 2 WO 6 (Ln = lanthanides) nanoceramics can probe into multifunctional applications due to their unique structural and electronic properties. In this work Sm 3+ ions in the Sm 2 WO 6 nanoceramics were partially replaced with Nd 3+ and Dy 3+ ions and their structural, optical and ionic transport properties were studied. The size and structure of the nanocrystalline LnSmWO 6 (Ln = Nd and Dy) compounds prepared through a combustion method were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy and transmission electron microscopy (TEM). UV-Visible spectroscopy and photoluminescence spectroscopy were used for the investigation of optical and electronic properties of the nanoceramics. Bulk ceramics prepared from the nanoparticles achieved high-density during the sintering process and the surface morphology of the dense NdSmWO 6 was imaged using scanning electron microscopy. The electrical properties of the dense ceramics were analysed using impedance spectroscopy. XRD analysis carried out on the prepared materials showed a single-phase monoclinic structure for the nanoceramics. A combined analysis of FTIR and Raman studies showed the presence of Ln-O and O-W-O vibrations, which confirm the monoclinic structure. Particulate properties investigated through the TEM imaging showed that the prepared materials are polycrystalline aggregates. Optical studies carried out on the nanoparticles showed absorption in the UV region and emission in the visible region. Impedance spectroscopic studies conducted on bulk ceramics imply that these are good oxide ion conductors at high-temperature.

show abstract

Comparison of structural and luminescence properties of Dy2O3 nanopowders synthesized by co-precipitation and green combustion routes

Cited by 54 publications

References 32 publications

Facile hydrothermal and novel preparation of nanostructured Ho2O3 for photodegradation of eriochrome black T dye as water pollutant

Facile hydrothermal and novel preparation of nanostructured Ho2O3 for photodegradation of eriochrome black T dye as water pollutant

Sonochemical synthesis, characterization and photodegradation of organic pollutant over Nd2O3 nanostructures prepared via a new simple route

Preparation, characterization and properties of LnSmWO$$_{6}$$ (Ln = Nd and Dy) nanofunctional ceramics

Contact Info

Product

Resources

About