在不同水浴温度下通过电化学法在阴极导电玻璃上电沉积制备Cu2 O薄膜.XRD 和SEM 分析表明,水浴温度对制备Cu2 O薄膜的形貌、晶体粒径和晶向有重要影响.光吸收谱显示Cu2 O薄膜在可见光范围内具有较好的光吸收性能.光催化降解实验表明:在可见光下,Cu2 O薄膜对罗丹明B的降解具有较强的光催化活性;当水浴温度为50 C时,制备的具有(111)晶面的Cu2 O薄膜的光催化活性最高,反应时间为2.5 h时罗丹明B降解率可达60%;Cu2 O薄膜在重复使用4 次后,罗丹明B降解率仍可达到40%.%Cu2O film was prepared on conductive glass of cathode by electro deposition at different water bath temperature. The analysis results of XRD and SEM indicate that water bath temperature has an important influence on the surface morphology, the crystallite size and the crystallographic direction of the prepared Cu2O film. The optical absorption spectra show that the photo absorption capability of Cu2 O film is good under visible light. The results of photocatalytic degradation experiment show that: Under visible light, the obtained Cu2O film has a good photocatalytic activity on the degradation of rhodamine B; When the water bath temperature is 50℃, the photocatalytic activity of the prepared Cu2O film with ( 111 ) crystal face is the highest; The degradation rate of rhodamine B can reach 60% when the reaction time is 2. 5 h, and still can reach 40% after the Cu2O film is reused for 4 times.
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