Prikaz osnovnih podataka o dokumentu
Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation
dc.creator | Stojadinović, Stevan | |
dc.creator | Radić, Nenad | |
dc.creator | Grbić, Boško | |
dc.creator | Maletić, Slavica | |
dc.creator | Stefanov, Plamen | |
dc.creator | Pacevski, Aleksandar | |
dc.creator | Vasilić, Rastko | |
dc.date.accessioned | 2019-01-30T17:52:06Z | |
dc.date.available | 2019-01-30T17:52:06Z | |
dc.date.issued | 2016 | |
dc.identifier.issn | 0169-4332 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/2034 | |
dc.description.abstract | In this paper, we used plasma electrolytic oxidation (PEO) of titanium in water solution containing 10 g/L Na3PO4 center dot 12H(2)O + 2 g/L Eu2O3 powder for preparation of TiO2:Eu3+ coatings. The surfaces of obtained coatings exhibit a typical PEO porous structure. The energy dispersive X-ray spectroscopy analysis showed that the coatings are mainly composed of Ti, O, P, and Eu; it is observed that Eu content in the coatings increases with PEO time. The X-ray diffraction analysis indicated that the coatings are crystallized and composed of anatase and rutile TiO2 phases, with anatase being the dominant one. X-ray photoelectron spectroscopy revealed that Ti 2p spin-orbit components of TiO2:Eu3+ coatings are shifted towards higher binding energy, with respect to pure TiO2 coatings, suggesting that Eu3+ ions are incorporated into TiO2 lattice. Diffuse reflectance spectroscopy showed that TiO2:Eu3+ coatings exhibit evident red shift with respect to the pure TiO2 coatings. Photoluminescence (PL) emission spectra of TiO2:Eu3+ coatings are characterized by sharp emission bands in orange-red region ascribed to f-f transitions of Eu3+ ions from excited level D-5(0) to lower levels F-7(J) (J=0, 1, 2, 3, and 4). The excitation PL spectra of TiO2:Eu3+ coatings can be divided into two regions: the broad band region from 250 nm to 350 nm associated with charge transfer state of Eu3+ and the series of sharp peaks in the range from 350 nm to 550 rim corresponding to direct excitation of the Eu3+ ions. It is observed that the intensity of peaks in excitation and emission PL spectra increases with the concentration of Eu3+, but the peak positions remain practically unchanged. The ratio of PL emission for electric and magnetic dipole transitions indicates highly asymmetric environment around Eu3+ ions. The photocatalytic activity (PA) of TiO2:Eu3+ coatings is evaluated by measuring the photodegradation of methyl orange under simulated sunlight conditions. It is shown that PEO time, i.e., the amount of Eu3+ incorporated into coatings is an important factor affecting PA; TiO2:Eu3+ coating formed after 1 min of PEO time showed the highest PA. | en |
dc.publisher | Elsevier | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/171035/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172022/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172026/RS// | |
dc.relation.isversionof | https://cer.ihtm.bg.ac.rs/handle/123456789/4320 | |
dc.rights | restrictedAccess | |
dc.source | Applied Surface Science | |
dc.subject | Plasma electrolytic oxidation (PEO) | en |
dc.subject | TiO2 | en |
dc.subject | Eu3+ | en |
dc.subject | Photoluminescence | en |
dc.subject | Photocatalysis | en |
dc.title | Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation | en |
dc.type | article | |
dc.rights.license | ARR | |
dcterms.abstract | Пацевски, Aлександар; Радић, Ненад; Грбић, Бошко; Василиц, Растко; Стефанов, Пламен; Стојадиновиц, Стеван; Малетиц, Славица; | |
dc.citation.volume | 370 | |
dc.citation.spage | 218 | |
dc.citation.epage | 228 | |
dc.citation.other | 370: 218-228 | |
dc.citation.rank | aM21 | |
dc.description.other | The peer-reviewed version: [https://cer.ihtm.bg.ac.rs/handle/123456789/4320] | |
dc.identifier.doi | 10.1016/j.apsusc.2016.02.131 | |
dc.identifier.scopus | 2-s2.0-84959450080 | |
dc.identifier.wos | 000374075000029 | |
dc.type.version | publishedVersion |