在不同组成O2/Ar混合气体条件下,于700℃将仲钨酸铵加热分解制备WO3催化剂.采用XRD、XPS、DRS等技术对催化剂进行表征,考察催化剂在电子接受体Fe3+溶液体系下的光催化分解水析氧活性.结果表明:Ar含量增大,WO3催化剂表面氧空位增加,光催化析氧活性增大,纯Ar条件下所得的WO3催化剂光催化析氧活性最高.研究了Fe2+对光催化分解水析氧活性的影响,在Fe3+离子作为电子接受体的光催化分解水析氧反应中,一定浓度的Fe2+离子能明显抑制WO3的析氧活性,当Fe2+离子和Fe3+离子的浓度相当时,WO3催化剂完全失去光催化析氧活性.
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