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光催化剂SrNb2O6采用传统固相反应分别在合成温度为950℃(低温)和1400℃(高温)进行制备.通过XRD粉末衍射和UV-Vis吸收光谱分析,表征了样品的物相和光谱吸收特性.通过对高低温样品的测试和分析表明,高温样品具有单一的物相,而低温样品反应并不完全,是一个混合物.在SrNb2O6光催化活性研究中,常用的甲基橙被选作染料光降解模型,对比试验表明低温样品的光催化活性远高于纯相样品SrNb2O6或Nb2O5.经过讨论和分析,推断出低温产物中存在的异质结(SrNb2O6/Nb2O5)是提高光催化性能的根本原因.

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