Abstract
There are three subjects in this thesis. Those contain the synthesis of novel size and shape of gold/silver nanoparticles by microwave rapid heating, fabrication of self-assembled gold nanoparticles by spin coating method, and the research of lithographic materials decomposition mechanism by microwave digestion.In the fabrication of sphere metal nanoparticles, we report a feasible method to synthesize gold nanoparticles with uniform size by microwave heating. In this work, a closed chamber of a microwave system with precise temperature control function is employed to synthesize the gold nanoparticles. Our data demonstrates that the temperature plays an important role in the synthesis of gold nanoparticles. With higher synthesis temperature, longer heating time duration and rapid gradient of temperature increase, the smaller diameter and the narrow size distribution of the gold nanoparticles are obtained. The citrate concentrations play the role of reduction agent in the synthesis reaction, which also in?uence the morphology of gold nanoparticles. The experimental result demonstrates the microwave fast heating method is an effective means to achieve highly reproducible sizes than conventional hot plate heating method.In the fabrication of rod-shaped metal nanoparticles, it is found that both TOAB concentrations and reaction temperature programs play an important role in the formation of gold nanorods. By using higher TOAB concentration and the faster raising reaction temperature, gold nanorods with higher aspect ratio could be produced. This finding suggests the combination of TOAB surfactant and microwave system is a useful approach for the preparation of gold nanorods.In the microwave digestive decomposition mechanism, we evaluate the effectiveness of nitric acid on polymer (PMMA and PHS) digestion. There are several parameters, such as digestive temperature, volume of digestive solution, molecular weight of polymer and sample types that will affect the microwave-assisted digestionefficiency. The degradation mechanism of PHS, phenol and 4-nitrophenol by microwave digestion can be effectively evaluated with solid-phase microextraction and liquid-liquid extraction coupled with gas chromatography mass spectrometer.