Growth characteristics of copper nanowires and new chemical routes for the synthesis of K2SiF6:Mn4+ phosphors
碩士 === 國立臺北科技大學 === 資源工程研究所 === 106 === In the first part, one-dimensional copper nanowires (CuNWs) are synthesized via galvanic displacement reaction and the growth characteristics of CuNWs are studied by TEM and EDS mapping. As the reduction-oxidation reaction occurs on the solid-liquid interfac...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Others |
Language: | zh-TW |
Published: |
2018
|
Online Access: | http://ndltd.ncl.edu.tw/handle/3bmubf |
id |
ndltd-TW-106TIT05397015 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-TW-106TIT053970152019-05-16T01:40:25Z http://ndltd.ncl.edu.tw/handle/3bmubf Growth characteristics of copper nanowires and new chemical routes for the synthesis of K2SiF6:Mn4+ phosphors 一維奈米銅線成長分析與新穎化學法合成K2SiF6:Mn4+螢光粉 Tung-Jung Lin 林彤蓉 碩士 國立臺北科技大學 資源工程研究所 106 In the first part, one-dimensional copper nanowires (CuNWs) are synthesized via galvanic displacement reaction and the growth characteristics of CuNWs are studied by TEM and EDS mapping. As the reduction-oxidation reaction occurs on the solid-liquid interface, the Cu2+ ions on the Al foil surface are reduced to Cu nanoparticles which aggregate on the substrate surface during the initial reaction. The aluminum oxidizes into Al3+ ions and subsequently forms the AlOxHy interlayer between Al foil and Cu nanoparticles. By adding surfactant of CTAC, CuNWs grow on the Cu nanoparticle seeds in the [100] direction when the reaction time increases. In the second part, K2SiF6:Mn4+ powders are synthesized by co-precipitation reaction via a new chemical route. The structural, morphological and optical properties of the K2SiF6:Mn4+ powder are characterized by using powder X-ray diffraction, scanning electron microscope and photoluminescence spectroscopy, respectively. The compound is prepared by adding potassium silicate, KF and KMnO4 in an HF acidic solution following the reduction of Mn7+ to Mn4+ by using H2O2 at room temperature. By using PEG as surfactant, particles sized of K2SiF6:Mn4+ powders is about 5-10 μm. Moreover, Na2SiF6:Mn4+ powders are also successfully synthesized using this new chemical route. 張裕煦 2018 學位論文 ; thesis 75 zh-TW |
collection |
NDLTD |
language |
zh-TW |
format |
Others
|
sources |
NDLTD |
description |
碩士 === 國立臺北科技大學 === 資源工程研究所 === 106 === In the first part, one-dimensional copper nanowires (CuNWs) are synthesized via galvanic displacement reaction and the growth characteristics of CuNWs are studied by TEM and EDS mapping. As the reduction-oxidation reaction occurs on the solid-liquid interface, the Cu2+ ions on the Al foil surface are reduced to Cu nanoparticles which aggregate on the substrate surface during the initial reaction. The aluminum oxidizes into Al3+ ions and subsequently forms the AlOxHy interlayer between Al foil and Cu nanoparticles. By adding surfactant of CTAC, CuNWs grow on the Cu nanoparticle seeds in the [100] direction when the reaction time increases.
In the second part, K2SiF6:Mn4+ powders are synthesized by co-precipitation reaction via a new chemical route. The structural, morphological and optical properties of the K2SiF6:Mn4+ powder are characterized by using powder X-ray diffraction, scanning electron microscope and photoluminescence spectroscopy, respectively. The compound is prepared by adding potassium silicate, KF and KMnO4 in an HF acidic solution following the reduction of Mn7+ to Mn4+ by using H2O2 at room temperature. By using PEG as surfactant, particles sized of K2SiF6:Mn4+ powders is about 5-10 μm. Moreover, Na2SiF6:Mn4+ powders are also successfully synthesized using this new chemical route.
|
author2 |
張裕煦 |
author_facet |
張裕煦 Tung-Jung Lin 林彤蓉 |
author |
Tung-Jung Lin 林彤蓉 |
spellingShingle |
Tung-Jung Lin 林彤蓉 Growth characteristics of copper nanowires and new chemical routes for the synthesis of K2SiF6:Mn4+ phosphors |
author_sort |
Tung-Jung Lin |
title |
Growth characteristics of copper nanowires and new chemical routes for the synthesis of K2SiF6:Mn4+ phosphors |
title_short |
Growth characteristics of copper nanowires and new chemical routes for the synthesis of K2SiF6:Mn4+ phosphors |
title_full |
Growth characteristics of copper nanowires and new chemical routes for the synthesis of K2SiF6:Mn4+ phosphors |
title_fullStr |
Growth characteristics of copper nanowires and new chemical routes for the synthesis of K2SiF6:Mn4+ phosphors |
title_full_unstemmed |
Growth characteristics of copper nanowires and new chemical routes for the synthesis of K2SiF6:Mn4+ phosphors |
title_sort |
growth characteristics of copper nanowires and new chemical routes for the synthesis of k2sif6:mn4+ phosphors |
publishDate |
2018 |
url |
http://ndltd.ncl.edu.tw/handle/3bmubf |
work_keys_str_mv |
AT tungjunglin growthcharacteristicsofcoppernanowiresandnewchemicalroutesforthesynthesisofk2sif6mn4phosphors AT líntóngróng growthcharacteristicsofcoppernanowiresandnewchemicalroutesforthesynthesisofk2sif6mn4phosphors AT tungjunglin yīwéinàimǐtóngxiànchéngzhǎngfēnxīyǔxīnyǐnghuàxuéfǎhéchéngk2sif6mn4yíngguāngfěn AT líntóngróng yīwéinàimǐtóngxiànchéngzhǎngfēnxīyǔxīnyǐnghuàxuéfǎhéchéngk2sif6mn4yíngguāngfěn |
_version_ |
1719177290643931136 |