Structural, morphological and optical properties of pure and Yttrium (Y) doped lanthanum oxide (La2O3) nanoparticles by sonochemical method

2022 ◽  
Author(s):  
S. Karthikeyan ◽  
K. Dhanakodi ◽  
S. Surendhiran ◽  
P. Thirunavukkarasu ◽  
L. Arunraja ◽  
...  
Keyword(s):  
Optical Properties ◽  
Lanthanum Oxide ◽  
Sonochemical Method

Synthesis, optical properties and toxic potentiality of photoluminescent lanthanum oxide nanospheres

2020 ◽  
Vol 607 ◽  
pp. 125511
Author(s):  
Anees A. Ansari ◽  
Maqsood A. Siddiqui ◽  
Aslam Khan ◽  
N. Ahmad ◽  
Abdulaziz A. Al-Khedhairy
Keyword(s):  
Optical Properties ◽  
Lanthanum Oxide

Effects of DMSO Content on the Optical Properties, Liquid Stability, and Antimicrobial Activity of Fe3O4/OA/DMSO Ferrofluids

NANO ◽  
2020 ◽  
Vol 15 (05) ◽  
pp. 2050067 ◽  
Author(s):  
Rosy Eko Saputro ◽  
Ahmad Taufiq ◽  
Sunaryono ◽  
Nurul Hidayat ◽  
Arif Hidayat
Keyword(s):  
Antimicrobial Activity ◽  
Optical Properties ◽  
Energy Gap ◽  
Diffusion Method ◽  
Sonochemical Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
The Stability ◽  
Constituent Elements ◽  
Excellent Stability

Fe3O4 nanoparticles were synthesized through a sonochemical method and were subsequently investigated by X-ray diffraction (XRD), which showed that the phase obtained was Fe3O4 with the most intense peak at 2[Formula: see text] of 35.5∘. The particle size of the Fe3O4 nanoparticles was 11.4[Formula: see text]nm. The dried ferrofluids containing Fe3O4 as a filler, oleic acid (OA) and dimethyl sulfoxide (DMSO) as surfactants tended to be amorphous. Scanning electron microscopy (SEM) observation of the Fe3O4 nanoparticles revealed agglomeration, and the dried ferrofluids morphology showed excellent dispersion. The constituent elements of both the Fe3O4 nanoparticles and the Fe3O4/OA/DMSO ferrofluids were identified through energy-dispersive X-ray spectroscopy to be Fe, O and C. Fourier transform infrared (FTIR) investigation revealed functional groups of the Fe3O4/OA/DMSO ferrofluids constituent Fe3O4 as the filler, OA and DMSO as surfactants, and olive oil as a dispersant. The absorbance of the samples was characterized by UV–Vis spectrophotometry, and the results were used to calculate the energy gap of the Fe3O4/OA/DMSO ferrofluids ranged from 2.20[Formula: see text]eV to 2.45[Formula: see text]eV. Through the absorbance measurements, the optical properties of Fe3O4/OA/DMSO ferrofluids were evaluated on the basis of their refractive indices, which ranged from 2.86 to 3.02. The stability of the Fe3O4/OA/DMSO ferrofluids was characterized by transmittance data collected for 12[Formula: see text]h, and excellent stability was obtained, as indicated by a relatively stable transmittance. Last, the antimicrobial activity of the Fe3O4/OA/DMSO ferrofluids was assessed through the diffusion method; the results showed that increasing DMSO volume resulted in greater ferrofluid antimicrobial activity.

scholarly journals Linear Optical Properties of Zinc Borotellurite Glass Doped with Lanthanum Oxide Nanoparticles for Optoelectronic and Photonic Application

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Faznny Mohd Fudzi ◽  
Halimah Mohamed Kamari ◽  
Amirah Abd Latif ◽  
Azlan Muhammad Noorazlan
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Optical Fibers ◽  
Lanthanum Oxide ◽  
Materials Science ◽  
Molar Fraction ◽  
Fiber Material ◽  
Optical Parameter ◽  
Oxide Nanoparticles ◽  
Nonbridging Oxygen

Enhancing the optical properties of glasses for the sake of optical application in various fields is an ongoing challenge in materials science and technology. Thus, the optical properties of zinc borotellurite glass doped with lanthanum oxide nanoparticles (La2O3 NPs) with the chemical composition of {[(TeO2)0.7(B2O3)0.3]0.7(ZnO)0.3}1−x (La2O3 NPs)x, where x = 0.01, 0.02, 0.03, 0.04, and 0.05 molar fraction, have been investigated. Characterization techniques such as x-ray diffraction, Fourier Transform Infrared Spectroscopy, and Ultraviolet-Visible Spectroscopy are employed to yield the structural properties and optical parameter of the glass. The amorphous nature of the fabricated glasses is confirmed with the presence of a broad hump via XRD diffraction pattern. The decreasing amount of high polarizable nonbridging oxygen as the concentration of La2O3 NPs increases has contributed to the increasing trend of energy band gap in the range of 2.70 to 3.52 eV and decreasing value of refractive index between 2.34 and 2.48. The fabricated glasses that have a higher refractive index than the widely used fiber material, pure silica glass, indicate that zinc borotellurite glass doped with lanthanum nanoparticles is a promising material to be applied as optical fibers.

Optical properties of amorphous As2S3 doped with lanthanum oxide and erbium oxide

2021 ◽  
Vol 572 ◽  
pp. 121108
Author(s):  
O.Z. Alekperov ◽  
E. Nakhmedov ◽  
G. Fatullayeva ◽  
Q. Eyyubov ◽  
A.I. Najafov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Lanthanum Oxide ◽  
Erbium Oxide

Microstructural and Optical Properties Modifications Induced by Plasma and Annealing Treatments of Lanthanum Oxide Sol−Gel Thin Films

2009 ◽  
Vol 113 (7) ◽  
pp. 2911-2918 ◽  
Author(s):  
L. Armelao ◽  
M. Pascolini ◽  
G. Bottaro ◽  
G. Bruno ◽  
M. M. Giangregorio ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Lanthanum Oxide ◽  
Sol Gel

Morphologies and Photoluminescence of Bi-Doped ZnO Materials Synthesized by Sonochemical Method

2013 ◽  
Vol 740 ◽  
pp. 535-539 ◽  
Author(s):  
De Hua Deng ◽  
Zhi Fu Wu ◽  
Guo Yan Zhao ◽  
Jian Ying Zhao
Keyword(s):  
Optical Properties ◽  
Room Temperature ◽  
Critical Parameter ◽  
Current Paper ◽  
Sonochemical Method ◽  
Sonication Time ◽  
Photoluminescence Spectra ◽  
Sem And Tem ◽  
Doped Zno ◽  
Shape Determination

The current paper reported the sonichemical synthesis and optical properties of the Bi-doped ZnO with superstructural nanomaterials. The morphology of the powders revealed by SEM and TEM exhibited stelliform dendrite and the sonication time appeared to be a critical parameter for the shape determination. The optical properties of the products were investigated by measuring the photoluminescence spectra at room temperature and the results demonstrated that the synthesized material has good optical properties.

Sign in / Sign up

Export Citation Format

Share Document