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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/78122
Title: | 利用活化聚合物基材表面直接生成金屬奈米粒子 Direct Growth of Metal Nanoparticles on Polymer Surfaces |
Authors: | Yi-Ching Li 李怡靜 |
Advisor: | 廖尉斯(Wei-Ssu Liao) |
Keyword: | 金屬奈米粒子,聚合物表面,氧氣電漿,表面自由基,非吸附性鍵結, Metal nanoparticles,Polymer surface,Oxygen plasma,Radical reduction,in situ reduction, |
Publication Year : | 2016 |
Degree: | 碩士 |
Abstract: | Direct metal nanoparticle growth over different types of polymer surfaces is demonstrated. The polymer top layer is activated by oxygen plasma to initiate free radical induced metal ion reduction at the solid-liquid interface. Excited gas molecules attack polymer surface moieties and generate activated free radical sites. These spots provide reducing power to reduce metal ions or the split of water molecules into hydroxyl radicals. The generated hydroxyl radicals thereafter induce continuous reduction of metal ions at the solid‑liquid interface. The growth of nanoparticles depends on polymer composition, surface treatment, and solution environments. Governed by initial radical generation, metal reduction proceeds, slows down, and could reach a mono-dispersed nanoparticle single layer by tuning experimental conditions. The particles anchor with polymers and exhibit durable entangled geometries much different from products of deposition or electrostatic adhesion. This highly enriched metal-polymer interface binding strength enables a material bridge and opens a straightforward route to integrate conventionally discrete surfaces. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/78122 |
DOI: | 10.6342/NTU201602379 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 化學系 |
Files in This Item:
File | Size | Format | |
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ntu-105-R03223170-1.pdf Restricted Access | 3.12 MB | Adobe PDF |
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