Preparation of Ag/Pd alloy nanoparticles and surface modification on Au nanoparticles
碩士 === 國立成功大學 === 化學系碩博士班 === 90 === Nanomaterials has attracted wide spread interest due to their size and composition dependent chemical and physical properties. Two exper- iments have been performed including (1) the synthesis of Ag / Pd alloy nanoparticles and (2) the modification of gold nano...
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ndltd-TW-090NCKU50650322018-06-25T06:05:01Z http://ndltd.ncl.edu.tw/handle/286d8b Preparation of Ag/Pd alloy nanoparticles and surface modification on Au nanoparticles 銀鈀合金奈米粒子的製備與金奈米粒子的表面修飾 Yao-Hung Tseng 曾耀弘 碩士 國立成功大學 化學系碩博士班 90 Nanomaterials has attracted wide spread interest due to their size and composition dependent chemical and physical properties. Two exper- iments have been performed including (1) the synthesis of Ag / Pd alloy nanoparticles and (2) the modification of gold nanoparticles. (1) Preparation of Ag / Pd alloy nanoparticles by laser irradiation: Laser irradiation of colloidal mixtures of Ag / Pd was conducted to synthesize Ag / Pd alloy nanoparticles. Compositional ratios of 1:1 and 2:1 were prepared in Ag / Pd system. The compositions , the particle sizes , and the morphology were measured as a function of laser irradiation period in order to monitor the changes from two component mixtures into the alloy colloids. The average particle sizes of Ag / Pd with the 1:1 and 2:1 metal ratios were 7.3 ± 2.0 nm and 5.4 ± 2.0 nm . In addition to EDX analysis, X-ray diffraction measurements were carried out to confirm the formation of the alloy nanoparticles. (2) Modification of Protoporphyrin Ⅸ Zinc (Ⅱ) on Au nanoparticles: Gold nanoparticles and protoporphyrin Ⅸ zinc (Ⅱ) (ZnPP) mixtures(18.2 % H2O and 81.8% DMF) with molar ratios of 1 : 1 , 1 : 3 , 1: 6 and 1: 10 were prepared. The XPS analysis displayed the ZnPP successfully attached on the gold nanoparticles. On the basis of the FT-IR results , it is possible that the electrostatic attraction is dominant between the Au colloids and porphyrins. Self – organization was observed for the porphyrins functionalized Au particles from the TEM images. Interestingly , the radial structures were developed with the molar ratio of 1: 3 (Au:ZnPP). However , the linear arrangements appeared for the molar ratios of 1: 6 and 1: 10 (Au:ZnPP). Formation of porphyrins H- aggregation resulting in the self-organization of the Au nanoparticles has been proposed and discussed. Chen-Sheng Yeh 葉晨聖 2002 學位論文 ; thesis 103 zh-TW |
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碩士 === 國立成功大學 === 化學系碩博士班 === 90 === Nanomaterials has attracted wide spread interest due to their size and composition dependent chemical and physical properties. Two exper- iments have been performed including (1) the synthesis of Ag / Pd alloy nanoparticles and (2) the modification of gold nanoparticles.
(1) Preparation of Ag / Pd alloy nanoparticles by laser irradiation:
Laser irradiation of colloidal mixtures of Ag / Pd was conducted to synthesize Ag / Pd alloy nanoparticles. Compositional ratios of 1:1 and 2:1 were prepared in Ag / Pd system. The compositions , the particle sizes , and the morphology were measured as a function of laser irradiation period in order to monitor the changes from two component mixtures into the alloy colloids. The average particle sizes of Ag / Pd with the 1:1 and 2:1 metal ratios were 7.3 ± 2.0 nm and 5.4 ± 2.0 nm . In addition to EDX analysis, X-ray diffraction measurements were carried out to confirm the formation of the alloy nanoparticles.
(2) Modification of Protoporphyrin Ⅸ Zinc (Ⅱ) on Au nanoparticles:
Gold nanoparticles and protoporphyrin Ⅸ zinc (Ⅱ) (ZnPP) mixtures(18.2 % H2O and 81.8% DMF) with molar ratios of 1 : 1 , 1 : 3 , 1: 6 and 1: 10 were prepared. The XPS analysis displayed the ZnPP successfully attached on the gold nanoparticles. On the basis of the FT-IR results , it is possible that the electrostatic attraction is dominant between the Au colloids and porphyrins. Self – organization was observed for the porphyrins functionalized Au particles from the TEM images. Interestingly , the radial structures were developed with the molar ratio of 1: 3 (Au:ZnPP). However , the linear arrangements appeared for the molar ratios of 1: 6 and 1: 10 (Au:ZnPP). Formation of porphyrins H- aggregation resulting in the self-organization of the Au nanoparticles has been proposed and discussed.
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author2 |
Chen-Sheng Yeh |
author_facet |
Chen-Sheng Yeh Yao-Hung Tseng 曾耀弘 |
author |
Yao-Hung Tseng 曾耀弘 |
spellingShingle |
Yao-Hung Tseng 曾耀弘 Preparation of Ag/Pd alloy nanoparticles and surface modification on Au nanoparticles |
author_sort |
Yao-Hung Tseng |
title |
Preparation of Ag/Pd alloy nanoparticles and surface modification on Au nanoparticles |
title_short |
Preparation of Ag/Pd alloy nanoparticles and surface modification on Au nanoparticles |
title_full |
Preparation of Ag/Pd alloy nanoparticles and surface modification on Au nanoparticles |
title_fullStr |
Preparation of Ag/Pd alloy nanoparticles and surface modification on Au nanoparticles |
title_full_unstemmed |
Preparation of Ag/Pd alloy nanoparticles and surface modification on Au nanoparticles |
title_sort |
preparation of ag/pd alloy nanoparticles and surface modification on au nanoparticles |
publishDate |
2002 |
url |
http://ndltd.ncl.edu.tw/handle/286d8b |
work_keys_str_mv |
AT yaohungtseng preparationofagpdalloynanoparticlesandsurfacemodificationonaunanoparticles AT céngyàohóng preparationofagpdalloynanoparticlesandsurfacemodificationonaunanoparticles AT yaohungtseng yínbǎhéjīnnàimǐlìzidezhìbèiyǔjīnnàimǐlìzidebiǎomiànxiūshì AT céngyàohóng yínbǎhéjīnnàimǐlìzidezhìbèiyǔjīnnàimǐlìzidebiǎomiànxiūshì |
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