The photocatalytic activity of nanometer WO_3 was investigated with Fe~(3+) as electron acceptor at pH=2.0 under 365nm UV irradiation. The reasons for nanometer WO_3 synthesized by different methods with different photocatalytic activities were discussed.

• 在Fe~(3+)为电子受体、溶液酸度pH为2.；0情况下；研究了纳米级WO_3在365nm紫外辐射下光解水析氧的光催化活性；并讨论了不同方法制备的催化剂活性差异的原因。