Synthesis of High Crystalline Al-Doped ZnO Nanopowders from Al2O3 and ZnO by Radio-Frequency Thermal Plasma
High crystalline Al-doped ZnO (AZO) nanopowders were prepared by in-flight treatment of ZnO and Al2O3 in Radio-Frequency (RF) thermal plasma. Micron-sized (~1 μm) ZnO and Al2O3 powders were mixed at Al/Zn ratios of 3.3 and 6.7 at.% and then injected into the RF thermal plasma torch along the centerl...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Hindawi Limited
2015-01-01
|
Series: | Journal of Nanomaterials |
Online Access: | http://dx.doi.org/10.1155/2015/151532 |
id |
doaj-05edb03ef738445b96b710e3a40b5c60 |
---|---|
record_format |
Article |
spelling |
doaj-05edb03ef738445b96b710e3a40b5c602020-11-24T23:48:02ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292015-01-01201510.1155/2015/151532151532Synthesis of High Crystalline Al-Doped ZnO Nanopowders from Al2O3 and ZnO by Radio-Frequency Thermal PlasmaMin-Kyeong Song0Mi-Yeon Lee1Jun-Ho Seo2Min-Ho Kim3Shi-Young Yang4Department of Plasma Application Engineering, Chonbuk National University, Jeonbuk 561-756, Republic of KoreaDepartment of Plasma Application Engineering, Chonbuk National University, Jeonbuk 561-756, Republic of KoreaDepartment of Plasma Application Engineering, Chonbuk National University, Jeonbuk 561-756, Republic of KoreaHigh Enthalpy Plasma Research Center, Chonbuk National University, Jeonbuk 561-756, Republic of KoreaGraduate School of Flexible & Printable Electronics, Chonbuk National University, Jeonbuk 561-756, Republic of KoreaHigh crystalline Al-doped ZnO (AZO) nanopowders were prepared by in-flight treatment of ZnO and Al2O3 in Radio-Frequency (RF) thermal plasma. Micron-sized (~1 μm) ZnO and Al2O3 powders were mixed at Al/Zn ratios of 3.3 and 6.7 at.% and then injected into the RF thermal plasma torch along the centerline at a feeding rate of 6.6 g/min. The RF thermal plasma torch system was operated at the plate power level of ~140 kVA to evaporate the mixture oxides and the resultant vapor species were condensed into solid particles by the high flow rate of quenching gas (~7000 slpm). The FE-SEM images of the as-treated powders showed that the multipod shaped and the whisker type nanoparticles were mainly synthesized. In addition, these nanocrystalline structures were confirmed as the single phase AZO nanopowders with the hexagonal wurtzite ZnO structure by the XRD patterns and FE-TEM results with the SAED image. However, the composition changes of 0.3 and 1.0 at.% were checked for the as-synthesized AZO nanopowders at Al/Zn ratios of 3.3 and 6.7 at.%, respectively, by the XRF data, which can require the adjustment of Al/Zn in the mixture precursors for the applications of high Al doping concentrations.http://dx.doi.org/10.1155/2015/151532 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Min-Kyeong Song Mi-Yeon Lee Jun-Ho Seo Min-Ho Kim Shi-Young Yang |
spellingShingle |
Min-Kyeong Song Mi-Yeon Lee Jun-Ho Seo Min-Ho Kim Shi-Young Yang Synthesis of High Crystalline Al-Doped ZnO Nanopowders from Al2O3 and ZnO by Radio-Frequency Thermal Plasma Journal of Nanomaterials |
author_facet |
Min-Kyeong Song Mi-Yeon Lee Jun-Ho Seo Min-Ho Kim Shi-Young Yang |
author_sort |
Min-Kyeong Song |
title |
Synthesis of High Crystalline Al-Doped ZnO Nanopowders from Al2O3 and ZnO by Radio-Frequency Thermal Plasma |
title_short |
Synthesis of High Crystalline Al-Doped ZnO Nanopowders from Al2O3 and ZnO by Radio-Frequency Thermal Plasma |
title_full |
Synthesis of High Crystalline Al-Doped ZnO Nanopowders from Al2O3 and ZnO by Radio-Frequency Thermal Plasma |
title_fullStr |
Synthesis of High Crystalline Al-Doped ZnO Nanopowders from Al2O3 and ZnO by Radio-Frequency Thermal Plasma |
title_full_unstemmed |
Synthesis of High Crystalline Al-Doped ZnO Nanopowders from Al2O3 and ZnO by Radio-Frequency Thermal Plasma |
title_sort |
synthesis of high crystalline al-doped zno nanopowders from al2o3 and zno by radio-frequency thermal plasma |
publisher |
Hindawi Limited |
series |
Journal of Nanomaterials |
issn |
1687-4110 1687-4129 |
publishDate |
2015-01-01 |
description |
High crystalline Al-doped ZnO (AZO) nanopowders were prepared by in-flight treatment of ZnO and Al2O3 in Radio-Frequency (RF) thermal plasma. Micron-sized (~1 μm) ZnO and Al2O3 powders were mixed at Al/Zn ratios of 3.3 and 6.7 at.% and then injected into the RF thermal plasma torch along the centerline at a feeding rate of 6.6 g/min. The RF thermal plasma torch system was operated at the plate power level of ~140 kVA to evaporate the mixture oxides and the resultant vapor species were condensed into solid particles by the high flow rate of quenching gas (~7000 slpm). The FE-SEM images of the as-treated powders showed that the multipod shaped and the whisker type nanoparticles were mainly synthesized. In addition, these nanocrystalline structures were confirmed as the single phase AZO nanopowders with the hexagonal wurtzite ZnO structure by the XRD patterns and FE-TEM results with the SAED image. However, the composition changes of 0.3 and 1.0 at.% were checked for the as-synthesized AZO nanopowders at Al/Zn ratios of 3.3 and 6.7 at.%, respectively, by the XRF data, which can require the adjustment of Al/Zn in the mixture precursors for the applications of high Al doping concentrations. |
url |
http://dx.doi.org/10.1155/2015/151532 |
work_keys_str_mv |
AT minkyeongsong synthesisofhighcrystallinealdopedznonanopowdersfromal2o3andznobyradiofrequencythermalplasma AT miyeonlee synthesisofhighcrystallinealdopedznonanopowdersfromal2o3andznobyradiofrequencythermalplasma AT junhoseo synthesisofhighcrystallinealdopedznonanopowdersfromal2o3andznobyradiofrequencythermalplasma AT minhokim synthesisofhighcrystallinealdopedznonanopowdersfromal2o3andznobyradiofrequencythermalplasma AT shiyoungyang synthesisofhighcrystallinealdopedznonanopowdersfromal2o3andznobyradiofrequencythermalplasma |
_version_ |
1725487562577936384 |