The theoretical capacity given by a closely packed monoplayer model was 5 3 ions on per square nanometer of TiO 2 surface, bigger than the practical one.

• 两种研究方法测得的阈值均为 1 0个 /nm2 ,按照密置单层模型计算得到估算阈值为5 3个 /nm2 ,大于所得实际阈值