四方矩形奈米銅管與金奈米螺旋結構

Rectangular Copper Nanotubes and Gold Nanospirals

許雅婷(Ya-Ting Hsu)

指導教授 ： 張裕煦

國立臺北科技大學/工程學院/資源工程研究所/碩士(2013年)

https://doi.org/10.6841/NTUT.2013.00117

摘要

本研究是利用賈凡尼置換反應進行鋁-銅和鋁-金之間的氧化還原，並添加界面活性劑輔助作為晶面成長抑制劑的角色來控制形貌與大小，再進一步調整反應溫度得到最佳化的參數。在酸性環境下，藉由界面活性劑十六烷基三甲基氯化銨輔助，使銅離子沉積於粗糙的鋁基材上，合成出四方矩形的奈米銅管，其直徑為150-300 nm，長為2-10 μm，且發現在存有雙氧水的水溶液下，對亞甲基藍有很好的催化降解能力。而另一方面，藉由添加氯金酸和陽離子界面活性劑十六烷基三甲基溴化銨 (cetyltrimethylammonium bromide)、十六烷基三甲基氯化銨 (cetyltrimethylammonium chloride)、benzyldimethylhexadecylammonium chloride 和陰離子型界面活性劑十二烷基硫酸鈉 (sodium dodecyl sulfate) 與非離子型界面活性劑 Tween 20、聚乙烯吡咯烷酮 (polyvinylpyrrolidone)、poly(ethylene glycol) (12) tridecyl ether 等七種界面活性劑，合成出板狀、樹枝狀、絲狀、薄片狀、螺旋狀等不同的金奈米結構，以及超薄的氧化鋁膜副產物，其中添加了三種界面活性劑所合成之金奈米螺旋結構，直徑約為 200-500 nm，長為數十 μm，以 4-mercaptobenzoic acid 作為探測分子測量其拉曼散射增強效果，訊號強度比奈米金顆粒強至 6-19 倍，展現了良好的表面增強拉曼散射性質。

關鍵字

賈凡尼置換反應 ； 奈米銅管 ； 奈米金線 ； 表面增強拉曼散射

並列摘要

Large-scale arrays of one-dimensional rectangular Cu nanotubes (rCuNTs) were synthesized using cetyltrimethylammonium chloride-assisted galvanic replacement reaction on rough Al substrates. The rCuNTs with 150-300 nm in diameter and 2-10 μm in length, were obtained by controlling the reaction temperature and stoichiometry. The superior catalytic activity of rCuNTs in degradation of methylene blue aqueous solution in present of H2O2 was also presented.
On the other hand, Au nanostructures were also synthesized using surfactant-assisted galvanic replacement reaction on Al substrates. By controlling the reaction temperature and adding different types of surfactants, including cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, benzyldimethylhexadecylammonium chloride, sodium dodecyl sulfate, Tween 20, polyvinylpyrrolidone, poly(ethylene glycol) (12) tridecyl ether, etc. Au nanostructures with different morphologies were obtained, such as wire, belt, plate, flake, branched, dendritic, spiral and byproduct of ultrathin alumina film. Especially Au nanospirals with 200-500 nm in diameter and several micrometers in length were synthesized by using three kinds of surfactants. Using 4-mercaptobenzoic acid as a surface-enhanced Raman scattering probe, a highest scattering intensity of 13,000 counts was measured using Au nanospirals as the SERS substrate.

並列關鍵字

galvanic replacement reaction ； copper nanotubes ； gold nanowires ； SERS

參考文獻

37. 黃銘峰、李昆鴻、林宗宏、江政剛、張煥宗，奈米粒子於雷射脫附游離質譜分析與表面增強拉曼散射光譜之應用，科儀新知，第三十卷，第一期，2008，第81-89頁。

39. 蔡雨亨，利用界面活性劑輔助賈凡尼法合成一維奈米銅結構並以之為模板成長一維奈米銅銀核殼結構，碩士論文，國立台北科技大學資源工程研究所，台北，2011。

1. M. H. Rashid and T. K. Mandal, "Synthesis and catalytic application of nanostructured silver dendrites," J. Phys. Chem. C, vol. 111, no. 45, 2007, pp. 16750-16760.

2. S. S. Chang, C. W. Shih, C. D. Chen, W. C. Lai and C. R. C. Wang, "The shape transition of gold nanorods," Langmuir, vol. 15, no. 3, 1999, pp. 701-709.

3. S. Chen and Y. Yang, "Magnetoelectrochemistry of gold nanoparticle quantized capacitance charging," J. Am. Chem. Soc., vol. 124, no. 19, 2002, pp. 5280-5281.