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Kreiranje morfologije i veličine čestica ZnO prahova
Tailoring morphology and particle size of ZnO powders
dc.creator | Marković, Smilja | |
dc.creator | Stanković, Ana | |
dc.creator | Veselinović, Ljiljana | |
dc.creator | Stojanović, Zoran S. | |
dc.creator | Uskoković, Dragan | |
dc.date.accessioned | 2017-06-10T15:45:07Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0354-2300 | |
dc.identifier.uri | https://dais.sanu.ac.rs/123456789/479 | |
dc.description.abstract | U ovom tekstu objašnjeni su postupci sinteze prahova ZnO i mogućnosti da se tim sintezama morfologija i srednja veličina čestica kreiraju od mikrometarskih štapića do nanometarskih sfernih čestica. Primenjene su dve metode sinteze, niskotemperatursko hidrotermalno (HT) procesiranje i ultrazvučno (UZ) procesiranje. Morfologija i srednja veličina čestica su kreirane podešavanjem molskog odnosa [Zn2+]/[OH-] polaznog (prekurskorskog) rastvora. Aglomeracija čestica je sprečena upotrebom polivinil pirolidona (PVP). Sintetisani prahovi su karakterisani metodom rendgenske difrakcije na prahu (XRD), skanirajuće elektronske mikroskopije (FESEM) i UV-Vis difuzione refleksione spektroskopije (UV-Vis DRS). Na osnovu skanirajućih elektronskih mikrografija predložen je mehanizam rasta čestica ZnO u zavisnosti od molskog odnosa [Zn2+]/[OH-] polaznog rastvora. Takođe, ispitan je i uticaj veličine i morfologije čestica na optičke karakteristike prahova ZnO; uočeno je da veličina i morfologija čestica utiču kako na apsorpciju vidljive svetlosti (%) tako i na pomeraj energetskog procepa (eV). | sr |
dc.description.abstract | Different ZnO powders synthesis methods as well as possibilities to obtain particles with controlled morphology and average particle size from micro- to nano-level were discussed. Two synthesis methods were applied, low-temperature hydrothermal (HT) and ultrasound processing (UZ). Morphology and average particle size were tailored by adjusting of initial solution [Zn2+]/[OH-]molar ratio. Particles agglomeration is suppressed by polyvinylpyrrolidone (PVP). Synthesized powders were characterized by X-ray diffraction method (XRD), field emission scanning electron microscopy (FESEM) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). Considering FESEM micrographs the ZnO particles growth mechanism depending on initial solution [Zn2+]/[OH-] molar ratio is proposed. Furthermore, influence of average particle size and morphology on ZnO optical properties is studied; it is observed that both average particle size and morphology affect visible light absorption (%) as well as shift of Ebg (eV). | en |
dc.format | 67 5 (2012) 685-691 | |
dc.format | application/pdf | |
dc.language | sr | |
dc.publisher | Beograd : Savez inženjera i tehničara Srbije | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45004/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Tehnika - Novi materijali | sr |
dc.subject | ZnO | |
dc.subject | hydrothermal processing | |
dc.subject | ultrasonic processing | |
dc.subject | particle morphology | |
dc.subject | average particle size | |
dc.title | Kreiranje morfologije i veličine čestica ZnO prahova | sr |
dc.title.alternative | Tailoring morphology and particle size of ZnO powders | en |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dcterms.abstract | Ускоковић, Драган; Марковић, Смиља; Стојановић, Зоран; Веселиновић, Љиљана; Станковић, Aна; Креирање морфологије и величине честица ЗнО прахова; Креирање морфологије и величине честица ЗнО прахова; | |
dc.citation.spage | 685 | |
dc.citation.epage | 691 | |
dc.type.version | publishedVersion | |
dc.identifier.fulltext | https://dais.sanu.ac.rs/bitstream/id/21464/476.pdf | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_dais_479 |