School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea.
School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea.
Chemosphere. 2022 Dec;308(Pt 3):136571. doi: 10.1016/j.chemosphere.2022.136571. Epub 2022 Sep 22.
The development of recyclable catalysts with effective properties and stable reusability is great importance for the removal of different types of pollutants in wastewater. Herein, we have synthesized Polyvinylidene fluoride (PVDF) polymer and mixed-phase 1T/2H MoS for immobilizing the sonocatalyst material. Techniques such as FESEM, XRD, FTIR, XPS, and UV-vis spectra have been used for analyzing the structural, and morphological properties. The formation of a 1T/2H mixed phase in MoS has been revealed by XRD and XPS analysis. Consequently, the sonocatalytic performance of the nanocomposite membrane was investigated through ciprofloxacin (CIP) and organic pollutants (Rhodamine B (RhB)). As a result, MoS/PVDF (PM4) nanocomposite membrane exhibited a superior sonocatalytic activity with 94.37% and 84.37% of RhB and CIP degradation efficiency with pseudo-first-order kinetic constant (k) of 0.0187 min, and 0.0044 min. The sonocatalytic property of the nanocomposite membrane is related to 1T/2H mixed-phase and PVDF. Additionally, the metallic based 1T phase MoS helps to promote electrons and holes and reduce the recombination rate. Moreover, it promotes the generation of more hydroxy radicals (OH), and superoxide radicals (∙O) play a significant role in sonocatalytic degradation of RhB pollutants. Thus, the improved sonocatalytic degradation of 1T/2H MoS/PVDF composite membrane exhibited its application in real-time wastewater treatment.
开发具有高效性能和稳定可重复使用性的可回收催化剂对于去除废水中的不同类型污染物非常重要。在此，我们合成了聚偏二氟乙烯（PVDF）聚合物和混合相 1T/2H MoS，用于固定声催化剂材料。使用 FESEM、XRD、FTIR、XPS 和 UV-vis 光谱等技术分析了结构和形态特性。通过 XRD 和 XPS 分析揭示了 MoS 中形成 1T/2H 混合相。因此，通过研究纳米复合膜对环丙沙星（CIP）和有机污染物（罗丹明 B（RhB））的声催化性能来评估纳米复合膜的声催化性能。结果表明，MoS/PVDF（PM4）纳米复合膜表现出优异的声催化活性，RhB 和 CIP 的降解效率分别达到 94.37%和 84.37%，准一级动力学常数（k）分别为 0.0187 min 和 0.0044 min。纳米复合膜的声催化性能与 1T/2H 混合相和 PVDF 有关。此外，基于金属的 1T 相 MoS 有助于促进电子和空穴，并降低复合率。它还促进了更多羟基自由基（OH）的生成，超氧自由基（∙O）在 RhB 污染物的声催化降解中起着重要作用。因此，1T/2H MoS/PVDF 复合膜的声催化降解性能得到了提高，展示了其在实时废水处理中的应用。
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