| LEADER |
02909nam a22002777a 4500 |
| 001 |
2157469 |
| 041 |
|
|
|a eng
|
| 044 |
|
|
|b اليمن
|
| 100 |
|
|
|9 685751
|a Adriss, Ibrahim Adam Sulieman
|e Author
|
| 245 |
|
|
|a Double-Consciousness:
|b Gazing at the Arab World from the American Soilii Europium Doped Titanium Dioxide Nanocrystalline : Synthesis, Structure and Optical Properties
|
| 260 |
|
|
|b جامعة البيضاء
|c 2023
|g أبريل
|
| 300 |
|
|
|a 192 - 205
|
| 336 |
|
|
|a بحوث ومقالات
|b Article
|
| 520 |
|
|
|b Uniform, spherical-shaped TiO2: Eu nanoparticles with different doping concentrations were synthesized using the sol-gel method. The structural, morphology, optical, luminescent, and surface properties of the samples were investigated at different Eu3+ concentration. The morphology, crystalline structure, and chemical composition of the samples were characterized by scanning electron microscopy, X ray diffraction, and X-ray photoelectron spectroscopy. The X-ray diffraction results reveal that the obtained powder nanoparticles consist of a single phase tetragonal structure. The crystallite sizes calculated by utilizing Scherrer’s equation were found in the range of 18.94 – 7.77 nm for TiO2: Eu samples annealed at 550˚C. The SEM images reveal an irregular agglomerated morphology indicating a decrease in particle size with an increase in Eu3+ concentration. X-ray photoelectron spectroscopy (XPS) high resolution spectra of the Ti-2p peak confirmed that Ti atoms were in a doubly ionized state, and the deconvolution of the O1s XPS peak show the presence of oxygen related defects in the sample. EDS results confirm a systematic increase of Eu content in the as-prepared samples with the increase of europium concentration. Incorporation of europium in the titania particles induces a structural deformation and a blueshift of their absorption edge. The luminescence intensity increases with Eu3+ concentration up to 3 mol% and then quenched. While the PL emission of the as-grown samples is dominated by the 5D0- 7Fj transition of Eu3+ ions, the emission intensity reduces drastically after thermal annealing due to outwards segregation of dopant ions.
|
| 653 |
|
|
|a النباتات المخدرة
|a الوعي المزدوج
|a ثاني أكسيد التيتانيوم
|
| 692 |
|
|
|b Titanium Dioxide
|b Photoluminescence Spectroscopy
|b XPS
|b Nanocrystalline
|b Anatase
|b Rutile
|
| 700 |
|
|
|9 745179
|a Shaban, F.
|e Co-Author
|
| 700 |
|
|
|9 745190
|a Yagoub, M. Y. A.
|e Co-Author
|
| 700 |
|
|
|9 643600
|a Hassan, Hassan Wardi
|e Co-Author
|
| 700 |
|
|
|9 745185
|a Issa, Nashwa A.
|e Co-Author
|
| 773 |
|
|
|c 014
|e AlBayda University Journal
|f Mağallaẗ ğāmiʿaẗ al-Bayḍāʾ li-l-buḥūṯ
|l 001
|m مج5, ع1
|o 2422
|s مجلة جامعة البيضاء
|v 005
|x 2709-9695
|
| 856 |
|
|
|u 2422-005-001-014.pdf
|
| 930 |
|
|
|d y
|p y
|q n
|
| 995 |
|
|
|a EduSearch
|
| 995 |
|
|
|a HumanIndex
|
| 999 |
|
|
|c 1408306
|d 1408306
|
