Yue Liu , Shaomin Liu , Wen-Hai Zhang , Boyuan Xuan , Changwei Zhao , Hongxia Guo
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引用次数: 0
Abstract
Two-dimensional molybdenum disulfide (MoS2) has been recognized an excellent membrane material owing to its exceptional chemical stability, structural integrity, and high mechanical strength. However, the hydrophilic modification of the MoS2 membrane remains a significant challenge. Herein, we present an in-situ oxidation strategy to construct MoS2/MoO3 heterostructure nanosheets with an outer layer of MoO3 and an internal layer of MoS2 through a thermal annealing process, resulting in the ideal MoS2/MoO3 heterostructure ceramic membrane. This approach enhanced the membrane surface hydrophilicity without blocking channels of MoS2 for mass transfer. The resultant MoS2/MoO3 heterostructure membrane exhibited excellent water permeance of 32.8 L m2 h−1·bar−1 and Xylenol Orange (XO) rejection up to 97.4 %, and demonstrated outstanding pressure resistance and long-term operational stability.
二维二硫化钼（MoS2）由于其优异的化学稳定性、结构完整性和高机械强度而被公认为一种优秀的膜材料。然而，二硫化钼膜的亲水性改性仍然是一个重大的挑战。在此，我们提出了一种原位氧化策略，通过热退火工艺构建MoS2/MoO3异质结构纳米片，外层为MoO3，内层为MoS2，得到了理想的MoS2/MoO3异质结构陶瓷膜。这种方法增强了膜表面的亲水性，而不阻碍二硫化钼的传质通道。所制得的MoS2/MoO3异质结构膜的透水性为32.8 L m2 h−1·bar−1，阻二甲醇橙（XO）率高达97.4%，具有优异的耐压性能和长期运行稳定性。
期刊介绍：
The Journal of Membrane Science is a publication that focuses on membrane systems and is aimed at academic and industrial chemists, chemical engineers, materials scientists, and membranologists. It publishes original research and reviews on various aspects of membrane transport, membrane formation/structure, fouling, module/process design, and processes/applications. The journal primarily focuses on the structure, function, and performance of non-biological membranes but also includes papers that relate to biological membranes. The Journal of Membrane Science publishes Full Text Papers, State-of-the-Art Reviews, Letters to the Editor, and Perspectives.
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