本論文利用傅式轉換紅外光譜學(Fourier-transform infrared spectroscopy, FT-IR)研究三聚氰胺(1,3,5-triazine-2,4,6-triamine, melamine)在二氧化鈦粉末表面上的吸附及反應。在真空環境下，三聚氰胺會熱分解產生NCO、azide及含有CN與NH2官能基的表面物種。在有氧環境下，除了這些產物外，另有CO2(g)生成。O2存在下，三聚氰胺熱分解溫度與真空下類似，意謂著氧氣對三聚氰胺在二氧化鈦表面上的熱分解途徑與動力學方面並沒有顯著的影響。三聚氰胺/二氧化鈦光降解會生成單氰胺(cyanamide)與雙氰胺(dicyandiamide)分子，我們發現有氧環境可以加速三聚氰胺的光分解反應，而且所生成的單氰胺/雙氰胺莫耳數比為10.7。

Fourier-transform infrared spectroscopy has been employed to investigate the adsorption and reactions of 1,3,5-triazine-2,4,6-triamine (melamine) on powdered TiO2. Melamine on TiO2 is subjected to thermal decomposition, producing surface species of NCO, azide and CN- and/or NH2-containing intermediates under vacuum. In the presence of O2, gaseous CO2 is generated in addition to these surface species. The decomposition temperature of melamine in the presence of O2 or under vacuum is similar, indicating that O2 has negligible effect on the thermal decomposition pathways and kinetics of melamine on TiO2. Photodegradation of melamine on TiO2 generates cyanamide and dicyandiamide. O2 can enhance the melamine photodecomposition rate and further analysis reveals that the molar ratio of cyanamide/dicyandiamide formed is 10.7.

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