金奈米粒子在氧化反應中對於氫氧自由基活性之影響

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Title:	金奈米粒子在氧化反應中對於氫氧自由基活性之影響
Other Titles:	Effect of gold nanoparticles on the activity of hydroxyl radicals in oxidation reactions
Authors:	李安記;Lee, An-chi
Contributors:	淡江大學化學學系碩士班鄧金培;Deng, Jin-pei
Keywords:	金奈米粒子;蔥;雙氧水;Gold naaoparticle;anthracene;Hydrogen peroxide
Date:	2009
Issue Date:	2010-01-11 02:32:39 (UTC+8)
Abstract:	本研究主要目的為探討金奈米粒子對於氧化反應中氫氧自由基活性之影響。依據不同界面活性劑下所形成的奈米金、金銀混合比例不同之奈金粒子或不同形狀的奈米金，加入蔥與雙氧水進行氧化反應，再以紫外光/可見光光譜進行測量，觀察其反應性的變化。結果發現由十六烷基三甲基溴化銨或十二烷基硫酸鈉界面活性劑下所形成的球形奈米金粒子或金-銀混合型奈米金粒子，對於蔥之氧化反應有顯著的改變。若將奈米金形狀由球形換置成棍狀，可以發現雙氧水的加入對於蔥的氧化反應並無催化的效果。然而，我們在玻尿酸裂解反應中加入金奈米粒子，發現金奈米粒子對於玻尿酸裂解反應中，黏度下降速率並沒有顯著的幫助。 The purpose of this essay is to study the effect of gold and Au-Ag nanoparticles on the activity of hydroxyl radicals in the oxidation reactions. Gold nanoparticles were prepared in the ionic surfactants, including hexadecyltrimethy lammonium bromide and sodium dodecyl sulfate. Au-Ag nanoparticles were synthesized by the different proportion of gold and silver salts in the hexadecyltrimethyl ammonium bromide solutions. The oxidation of anthracene by hydrogen peroxide in presence of gold nanoparticles was monitored by the UV/Vis instruemt. Experimental results showed that both the sphere gold and Au-Ag nanoparticles posses noticeable activities on the oxidation of anthracene. In contrast, no catalytical activity was observed for gold nanorods. On the other hand, gold nanoparticles also exhibit no catalytical activity on the degradation of hyaluronic acid.
Appears in Collections:	[Graduate Institute & Department of Chemistry] Thesis

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