本研究主要分為三部份，其中第一部份為中孔洞氧化矽之合成。本研究利用小角度散 X 光散射（Small Angle X-Ray Scattering, SAXS）、氮氣等溫吸附脫附量測儀（N2 adsorption/desorption measurement）和熱重/熱差分析儀（Thermal Analyzers/Mass spectrometer）探討煅燒前後氧化矽結晶結構、孔洞結構及熱性質。第二部份則是以後製備法(post-asynthesis)利用3-氨丙基三甲氧基矽烷（3-Aminopropyltrimethoxysilane, APTMS）進行氮官能基表面改質，改質後的樣品利用高解析傅立葉紅外線吸收光譜（High resolution fourier transform infrared spectroscopy, HRFTIR ）觀察表面官能基的變化並探討APTMS含量對中孔氧化矽晶體結構（crystal structure）與孔洞形態的影響。第三部份是利用螫合劑以微波還原法，將 Pt 奈米顆粒及 Au 奈米顆粒負載於中孔氧化矽的表面，探討螯合劑及氮官能基對於還原奈米顆粒的影響。研究利用高解析穿透式電子顯微鏡（High resolution transmission electron microscopy, HRTEM）和粉末 X 光繞射（X-ray diffraction, XRD）觀察中孔洞氧化矽形貌、分散情況及結晶結構。
　　第一部份的 SAXS 結果顯示，合成出的中孔洞氧化矽在 550℃ 煅燒前後，結晶結構差異不大。第二部份研究結果顯示，表面氮官能基改質不會影響中孔洞氧化矽的結晶結構，顯示氮官能基改質對於中孔洞氧化矽的化學性質影響不大；氮氣等溫吸附脫附量測結果顯示，孔洞內殘留之界面活性劑不會影響表面改質的效果。第三部份的TEM結果顯示，利用微波還原法配合螯合劑可製備平均粒徑為 0.61 nm 的 Pt 奈米顆粒和 1.74 nm 的 Au 奈米顆粒。表面氮官基可穩定 Pt 奈米顆粒，避免量子尺寸效應的發生並均勻散佈奈米顆粒；而在 Au 奈米顆粒部份，當中孔洞氧化矽與氮官能基的重量比為 1:1 和 1:0.6 時，Au 奈米顆粒可均勻散佈，當氮官能基比例下降為 1:0.2 時，Au 奈米顆粒會出現團聚的現象。

The study of mesoporous silica supported metal nanoparticles included three parts. In the first part, highly ordered mesoporous silicas have been synthesized by the use of poly-(alkylene oxide) block copolymers. The crystal structure、porous structure and thermal properties of mesoporous silicas and calcined mesoporous silicas were studied by Small Angle X-Ray Scattering (SAXS)、N2 adsorption/desorption measurement and Thermal Analyzers/Mass spectrometer (TG/DTA). In the second part, the surface of Mesoporous silica functionalized with amine group prior to addition of APTMS by post-synthesis. The samples were studied by High Resolution Fourier Transform Infrared Spectroscopy (HRFTIR) and the effect of APTMS concentration on the crystal structure and porous structure were also studied. In the third part, the Pt nanoparticles and Au nanoparticles integrate with mesoporous silica by chelating agent assisted with microwave synthesis. The effects of APTMS concentration and chelating agent on reducing metal nanoparticles were also studied. The surface morphology of mesoporous silicas after microwave synthesis and the crystal structure of noble nanopartice were studied by High Resolution Transmission Electron Microscopy (HRTEM) and x-Ray Diffraction (XRD).
In the first part, the SAXS showed that the as-synthesis mesoporous silicas had similar crystal structure to calcined mesoporous silicas. In he second part, the results showed that the reaction of surface mondification did not affect the crystal structure of mesoporous silica which means the mesoporous silica had chemical stability. The N2 adsorption/desorption measurement showed that the surface mondification of as-synthesis sample was similar to calcined sample. In the last part, the HRTEM showed the average size of Pt nanoparticles and Au nanoparticles were about 0.61 nm and 1.74 nm. The Pt nanoparticles were extremelly small in size without the quantum size effect because the amine group could stable the Pt nanoparticles. Also, the Pt particles were highly dispersed by amine group assisted. When the weight ratio of mesoporous silicas (calcined mesoporous silicas) and APTMS were 1:1 and 1:0.6, the Au nanopartilce were highly dispersed. Meanwhile, the Au nanoparticles clustered, when the weight ratio reduced to 1:0.2.

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