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Kreiranje morfologije i veličine čestica ZnO prahova

Tailoring morphology and particle size of ZnO powders

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2012
476.pdf (3.045Mb)
Authors
Marković, Smilja
Stanković, Ana
Veselinović, Ljiljana
Stojanović, Zoran S.
Uskoković, Dragan
Article (Published version)
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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 ut...iču kako na apsorpciju vidljive svetlosti (%) tako i na pomeraj energetskog procepa (eV).

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).

Keywords:
ZnO / hydrothermal processing / ultrasonic processing / particle morphology / average particle size
Source:
Tehnika - Novi materijali, 2012, 685-691
Publisher:
  • Beograd : Savez inženjera i tehničara Srbije
Funding / projects:
  • Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)

ISSN: 0354-2300

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_dais_479
URI
https://dais.sanu.ac.rs/123456789/479
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Marković, Smilja
AU  - Stanković, Ana
AU  - Veselinović, Ljiljana
AU  - Stojanović, Zoran S.
AU  - Uskoković, Dragan
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/479
AB  - 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).
AB  - 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).
PB  - Beograd : Savez inženjera i tehničara Srbije
T2  - Tehnika - Novi materijali
T1  - Kreiranje morfologije i veličine čestica ZnO prahova
SP  - 685
EP  - 691
UR  - https://hdl.handle.net/21.15107/rcub_dais_479
ER  - 
@article{
author = "Marković, Smilja and Stanković, Ana and Veselinović, Ljiljana and Stojanović, Zoran S. and Uskoković, Dragan",
year = "2012",
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)., 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).",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Tehnika - Novi materijali",
title = "Kreiranje morfologije i veličine čestica ZnO prahova",
pages = "685-691",
url = "https://hdl.handle.net/21.15107/rcub_dais_479"
}
Marković, S., Stanković, A., Veselinović, L., Stojanović, Z. S.,& Uskoković, D.. (2012). Kreiranje morfologije i veličine čestica ZnO prahova. in Tehnika - Novi materijali
Beograd : Savez inženjera i tehničara Srbije., 685-691.
https://hdl.handle.net/21.15107/rcub_dais_479
Marković S, Stanković A, Veselinović L, Stojanović ZS, Uskoković D. Kreiranje morfologije i veličine čestica ZnO prahova. in Tehnika - Novi materijali. 2012;:685-691.
https://hdl.handle.net/21.15107/rcub_dais_479 .
Marković, Smilja, Stanković, Ana, Veselinović, Ljiljana, Stojanović, Zoran S., Uskoković, Dragan, "Kreiranje morfologije i veličine čestica ZnO prahova" in Tehnika - Novi materijali (2012):685-691,
https://hdl.handle.net/21.15107/rcub_dais_479 .

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