New Technology Faculty, Semnan University, Semnan, Iran.
Ultrason Sonochem. 2019 Nov;58:104636. doi: 10.1016/j.ultsonch.2019.104636. Epub 2019 Jun 12.
This paper reports on the synthesis of Cu/ZnO/AlO nanocomposites via a facile sonochemical-assisted approach using new starting reactants. This study was conducted to synthesis and photocatalytic evaluation of the Cu/ZnO/AlO nanocomposite in vacuum conditions. The XRD results showed that Cu/ZnO/AlO and CuO/ZnO/AlO nanocomposites could be obtained after annealing at 600 °C for 3 h in vacuum conditions and in the air, respectively. The effects of Cu:Zn:Al ratio, ultrasonic irradiation, power, time, and capping agent on the product composition and morphology were also studied. Finally, the efficiency of various as-synthesized Cu/ZnO/AlO nanocomposites for decolorization of methylene blue were evaluated. According to the results, using ultrasonic irradiation and annealing under vacuum, the efficiency is improved up to 100%. Because in this situation Cu/CuO/ZnO/AlO is formed, which has a better absorption (due to CuO) and conductivity (due to Cu) than CuO/ZnO/AlO for the photocatalysis process.
本文报道了通过一种简便的超声辅助方法，使用新的起始反应物合成 Cu/ZnO/AlO 纳米复合材料。本研究旨在合成并评估真空条件下 Cu/ZnO/AlO 纳米复合材料的光催化性能。XRD 结果表明，在真空条件下于 600°C 退火 3 小时后，可获得 Cu/ZnO/AlO 和 CuO/ZnO/AlO 纳米复合材料；在空气中退火 3 小时后，也可获得 Cu/ZnO/AlO 和 CuO/ZnO/AlO 纳米复合材料。还研究了 Cu:Zn:Al 比例、超声辐射、功率、时间和封端剂对产物组成和形貌的影响。最后，评估了各种合成的 Cu/ZnO/AlO 纳米复合材料对亚甲基蓝的脱色效率。结果表明，通过超声辐射和真空退火，可以将效率提高到 100%。因为在这种情况下，形成了 Cu/CuO/ZnO/AlO，其对光催化过程的吸收（由于 CuO）和导电性（由于 Cu）都优于 CuO/ZnO/AlO。
