使用 CuS/MoS 纳米复合材料实现重金属和有机污染物的高效声催化降解。
Efficient sonocatalytic degradation of heavy metal and organic pollutants using CuS/MoS nanocomposites.
机构信息
School of Mechanical Engineering, Kyungpook National Engineering, Daegu, South Korea; School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
School of Mechanical Engineering, Kyungpook National Engineering, Daegu, South Korea.
出版信息
Chemosphere. 2022 Oct;305:135415. doi: 10.1016/j.chemosphere.2022.135415. Epub 2022 Jun 21.
Eco-friendly and highly effective catalysts are receiving considerable attention for the removal of heavy-metal ions and organic pollutants. In this study, we developed CuS/MoS nanocomposite sonocatalysts to enhance the degradation rate of environmental contaminants by harnessing ultrasonic irradiation. The successful synthesis of nanocomposite sonocatalysts was confirmed by X-ray diffraction (XRD) analysis, and energy-dispersive X-ray spectroscopy. The incorporation of CuS into MoS resulted in a flower-like structure with an increased surface area. Importantly, the sonocatalytic efficiency was enhanced by increasing CuS concentration in the nanocomposites, achieving maximum removal efficiencies of 99% and 88.52% for rhodamine B (RhB) and Cr(VI), respectively. In addition, they showed excellent stability and recyclability over five consecutive cycles, without noticeable changes in the nanocomposite structure. Reactive oxygen species (ROS) used for the degradation were identified using ROS scavengers. We believe that this strategy of exploiting nanocomposite sonocatalysts has a great potential in the field of environmental catalysis.
环保且高效的催化剂受到广泛关注，用于去除重金属离子和有机污染物。本研究利用超声波辐射，制备了 CuS/MoS 纳米复合材料声催化剂，以提高环境污染物的降解速率。通过 X 射线衍射（XRD）分析和能谱分析，确认了纳米复合材料声催化剂的成功合成。CuS 的掺入使 MoS 呈现出花状结构，增加了比表面积。重要的是，通过增加纳米复合材料中 CuS 的浓度，声催化效率得到了提高，对罗丹明 B（RhB）和 Cr(VI)的去除效率分别达到了 99%和 88.52%。此外，它们在五个连续循环中表现出优异的稳定性和可回收性，纳米复合材料结构没有明显变化。使用 ROS 清除剂鉴定了用于降解的活性氧物种（ROS）。我们相信，这种利用纳米复合材料声催化剂的策略在环境催化领域具有很大的潜力。
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