In this paper, for the first time, composite nanostructures of Cu2O-CeO2 were prepared by a facile and single-step sonochemical method for thiophene photocatalytic oxidative desulfurization. Sonication was performed utilizing a high-intensity ultrasonic probe with a maximum output power of 80 Wcm-3 and operating frequency at 20 kHz. The direct effect of ultrasonic waves on the composition and morphology of the obtained products was also evaluated and it was found that under ultrasonic irradiation, Cu2O-CeO2 can be produced while the main product in the absence of ultrasonic waves is CuO-CeO2. Cu2O-CeO2 exhibits much higher photocatalytic efficiency (84%) than CuO-CeO2 (39%) due to its higher light absorption and electron synergistic effect. The effect of Ce:Cu on photocatalytic efficiency was examined by considering the ratios of 1:0.25, 1:1, 0.5:1, and 0.25:1 and yields of 64, 81, 84, and 76% were obtained, respectively. This indicates that there is an optimal value for the Ce:Cu ratio in the Cu2O-CeO2 nanocomposite.

中文翻译：

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光催化氧化脱硫的一步一步声化学合成Cu2O-CeO2纳米复合材料。

本文首次通过简便，一步一步的声化学方法制备了噻吩光催化氧化脱硫的Cu2O-CeO2复合纳米结构。使用高强度超声探头进行超声处理，该探头的最大输出功率为80 Wcm-3，工作频率为20 kHz。还评估了超声波对所得产物的组成和形态的直接影响，并且发现在超声波辐射下，可以产生Cu 2 O-CeO 2，而没有超声波的主要产物是CuO-CeO 2。Cu 2 O-CeO 2由于具有较高的光吸收和电子协同作用，因此比CuO-CeO 2（39％）具有更高的光催化效率（84％）。通过考虑1：0.25、1：1、0.5：3的比例来检查Ce：Cu对光催化效率的影响 1和0.25：1的产率分别为64％，81％，84％和76％。这表明在Cu2O-CeO2纳米复合材料中，Ce：Cu比存在最佳值。