具可回收性奈米金/氧化鐵粒子修飾之磷酸鋯奈米片之製備及其在還原硝基苯酚之應用研究

• Main Authors: Ying-Hao Pai, 白瀅豪
• Other Authors: Mei-Hui Tsai
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/227ek9

碩士 === 國立勤益科技大學 === 化工與材料工程系 === 104 === The main studies of this dissertation are divided into two parts:(1)preparation and appraisal of the Zirconium Phosphate/nanogold (ZrP-Au) composite nanostructure catalyst；(2)synthesize of the Zirconium Phosphate/iron oxide particles/nanogold (ZrP-Fe-Au) composite nanostructure catalyst,hoping to apply to reduction of 4-nitrophenol. Part I: Preparation of ZrP/Au nanocomposites There is great interest in the development of nanoparticles that combine multiple function or properties not obtainable in individual materials.α-zirconium phosphate(α-ZrP) nanoplatelets were initially prepared by thermal reflex method. And subsequently immobilization of Au nanoparticles onto α-zirconium phosphate nanoplatelets surface to prepared the catalyst of ZrP-Au nanocomposites.The nanopleatelets loading Au NPs needs prevent aggregation.The surface of the α-zirconium phosphate nanoplatelets was modified with organosilane molecules to generate an amine terminated surface.Au NPs to anchor on α-zirconium phosphate nanoplatelets surface through Au–N covalent bond formation. It was demonstrated that ZrP-Au nanocomposites as a catalyst has excellent performance for reduction 4-Nitrophenol(4-NPh) to 4-aminophenol(4-APh) within 30 sec. Part II: Preparation of ZrP/Au/Fe3O4 nanocomposites This study is the first part of nanocomposites were added iron oxide particles(Fe3O4 nanoparticles) to prepared composite nanostructure catalyst.Au nanoparticles and iron oxide particles exhibit excellent dispersing ability anchor on the zirconium phosphate surface to avoid agglomeration between the nanoparticles.The resultant composite presents good reusability through highly efficient recovery by using external magnetic fields. The characterization and structure was confirmed by Field Emission Scanning Electron Microscope(FE-SEM) and Field Emission Transmission Electron Microscope(FE-TEM),X-ray Diffractometer(XRD),Solid State NMR Spectrometer(NMR),X-ray photoelectron spectroscopy(XPS),Atomic Force Microscope (AFM),UV-visible spectrophotometer(UV-vis).It was demonstrated that ZrP-Fe-Au nanocomposites as a catalyst has excellent performance and stability for reduction 4-Nitrophenol(4-NPh) to 4-aminophenol(4-APh) within 70 sec.This catalyst display attractive potential in industrial applications where separation and recycling are imperative.