Thermal Plasma Synthesis of Crystalline Gallium Nitride Nanopowder from Gallium Nitrate Hydrate and Melamine
Gallium nitride (GaN) nanopowder used as a blue fluorescent material was synthesized by using a direct current (DC) non-transferred arc plasma. Gallium nitrate hydrate (Ga(NO3)3∙xH2O) was used as a raw material and NH3 gas was used as a nitridation source. Additionally, melamine (C3H6N6) powder was...
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MDPI AG
2016-02-01
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| Series: | Nanomaterials |
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| Online Access: | http://www.mdpi.com/2079-4991/6/3/38 |
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| author | Tae-Hee Kim Sooseok Choi Dong-Wha Park |
| author_facet | Tae-Hee Kim Sooseok Choi Dong-Wha Park |
| author_sort | Tae-Hee Kim |
| collection | DOAJ |
| description | Gallium nitride (GaN) nanopowder used as a blue fluorescent material was synthesized by using a direct current (DC) non-transferred arc plasma. Gallium nitrate hydrate (Ga(NO3)3∙xH2O) was used as a raw material and NH3 gas was used as a nitridation source. Additionally, melamine (C3H6N6) powder was injected into the plasma flame to prevent the oxidation of gallium to gallium oxide (Ga2O3). Argon thermal plasma was applied to synthesize GaN nanopowder. The synthesized GaN nanopowder by thermal plasma has low crystallinity and purity. It was improved to relatively high crystallinity and purity by annealing. The crystallinity is enhanced by the thermal treatment and the purity was increased by the elimination of residual C3H6N6. The combined process of thermal plasma and annealing was appropriate for synthesizing crystalline GaN nanopowder. The annealing process after the plasma synthesis of GaN nanopowder eliminated residual contamination and enhanced the crystallinity of GaN nanopowder. As a result, crystalline GaN nanopowder which has an average particle size of 30 nm was synthesized by the combination of thermal plasma treatment and annealing. |
| first_indexed | 2024-12-23T19:34:11Z |
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| id | doaj.art-098e08f154e34a32a01a5050e54f6ffd |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-23T19:34:11Z |
| publishDate | 2016-02-01 |
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| series | Nanomaterials |
| spelling | doaj.art-098e08f154e34a32a01a5050e54f6ffd2022-12-21T17:33:49ZengMDPI AGNanomaterials2079-49912016-02-01633810.3390/nano6030038nano6030038Thermal Plasma Synthesis of Crystalline Gallium Nitride Nanopowder from Gallium Nitrate Hydrate and MelamineTae-Hee Kim0Sooseok Choi1Dong-Wha Park2Department of Chemistry and Chemical Engineering and Regional Innovation Center for Environmental Technology of Thermal Plasma (RIC-ETTP), Inha University, 100 Inha-ro, Nam-gu, Incheon 22212, KoreaDepartment of Nuclear and Energy Engineering, Jeju National University, 102 Jejudaehak-ro, Jeju 63243, KoreaDepartment of Chemistry and Chemical Engineering and Regional Innovation Center for Environmental Technology of Thermal Plasma (RIC-ETTP), Inha University, 100 Inha-ro, Nam-gu, Incheon 22212, KoreaGallium nitride (GaN) nanopowder used as a blue fluorescent material was synthesized by using a direct current (DC) non-transferred arc plasma. Gallium nitrate hydrate (Ga(NO3)3∙xH2O) was used as a raw material and NH3 gas was used as a nitridation source. Additionally, melamine (C3H6N6) powder was injected into the plasma flame to prevent the oxidation of gallium to gallium oxide (Ga2O3). Argon thermal plasma was applied to synthesize GaN nanopowder. The synthesized GaN nanopowder by thermal plasma has low crystallinity and purity. It was improved to relatively high crystallinity and purity by annealing. The crystallinity is enhanced by the thermal treatment and the purity was increased by the elimination of residual C3H6N6. The combined process of thermal plasma and annealing was appropriate for synthesizing crystalline GaN nanopowder. The annealing process after the plasma synthesis of GaN nanopowder eliminated residual contamination and enhanced the crystallinity of GaN nanopowder. As a result, crystalline GaN nanopowder which has an average particle size of 30 nm was synthesized by the combination of thermal plasma treatment and annealing.http://www.mdpi.com/2079-4991/6/3/38thermal plasmaannealinggallium nitridegallium nitrate hydratemelaminenanopowder |
| spellingShingle | Tae-Hee Kim Sooseok Choi Dong-Wha Park Thermal Plasma Synthesis of Crystalline Gallium Nitride Nanopowder from Gallium Nitrate Hydrate and Melamine Nanomaterials thermal plasma annealing gallium nitride gallium nitrate hydrate melamine nanopowder |
| title | Thermal Plasma Synthesis of Crystalline Gallium Nitride Nanopowder from Gallium Nitrate Hydrate and Melamine |
| title_full | Thermal Plasma Synthesis of Crystalline Gallium Nitride Nanopowder from Gallium Nitrate Hydrate and Melamine |
| title_fullStr | Thermal Plasma Synthesis of Crystalline Gallium Nitride Nanopowder from Gallium Nitrate Hydrate and Melamine |
| title_full_unstemmed | Thermal Plasma Synthesis of Crystalline Gallium Nitride Nanopowder from Gallium Nitrate Hydrate and Melamine |
| title_short | Thermal Plasma Synthesis of Crystalline Gallium Nitride Nanopowder from Gallium Nitrate Hydrate and Melamine |
| title_sort | thermal plasma synthesis of crystalline gallium nitride nanopowder from gallium nitrate hydrate and melamine |
| topic | thermal plasma annealing gallium nitride gallium nitrate hydrate melamine nanopowder |
| url | http://www.mdpi.com/2079-4991/6/3/38 |
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