中文摘要：

研究了纳米TiO2对甘氨酸的光催化氧化性能及其氧化机理．结果表明，在实验浓度范围内，甘氨酸的光催化氧化符合准一级动力学反应．纳米TiO2的用量和溶液pH值都影响光催化反应．外加无机氧化物，能有效地捕获光致电子，增加溶液中羟基自由基的浓度，提高甘氨酸的光催化氧化能力．

英文摘要：

The photocatalytic oxidation of glycine by nano-TiO2 was investigated and the mechanism of this kind of reactions was preliminarily discussed. The results show that the photocatalytic oxidation is found to be pseudo-first order kinetics in all concentrations tested. The reaction-affecting factors, such as the content of nano-TiO2 and pH of the solution, have important influences on the experimental results. Not only the inorganic oxides externally added can facilitate the capture of the photoinduced electrons, but the photocatalytic oxidatian capabilities can be remarkably improved with the increasing of hydroxyl radicals.