Superhydrophobic MoS2-based multifunctional sponge for recovery and detection of spilled oil
Superhydrophobic MoS2-based multifunctional sponge for recovery and detection of spilled oil
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DOI：
10.1016/j.cap.2019.12.001
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发表时间：
2020-02-01
影响因子：
2.4
通讯作者：
Jung, Yeonwoong
中科院分区：
文献类型：
--
作者：
Ko, Tae-Jun;Hwang, Jae-Hoon;Jung, Yeonwoong
石油泄漏是对海洋生态系统的主要威胁，需要立即解决从海洋环境中清除泄漏的石油。在这项研究中，我们报道了一种超疏水二硫化钼（MoS2）包覆的聚二甲基硅氧烷（PDMS）海绵，并证明了其基于油水分离能力的溢油回收和溢油检测的高能力。这种新型吸油剂是通过简单的浸渍涂层将二硫化钼薄片掺入PDMS海绵中制备的。优化后的二硫化钼海绵的水接触角为> - 152度，具有优异的超疏水性和高吸油率（> - 97%），适用于多种油，包括植物油和燃料废弃物。此外，该材料在重复压缩循环中仍保持优异的吸油能力。这种新型吸附剂的多功能性已经扩展到利用有利于电的MoS2层对油进行实时自发检测。
Oil spills are a major threat to the marine ecosystem, requiring immediate solutions to remove spilled oil from oceanic environments. In this study, we report a superhydrophobic molybdenum disulfide (MoS2) coated polydimethylsiloxane (PDMS) sponge and demonstrate its high proficiency in spilled oil recovery and oil spill detection based on oil-water separation ability. This novel oil sorbent is fabricated by a simple dip-coating to incorporate MoS2 flakes into PDMS sponge. The optimized MoS2-sponge displays a water contact angle of > 152 degrees, demonstrating excellent superhydrophobicity and high oil absorption (> 97 wt%) for a variety of oils, including vegetable oil and fuel waste. Moreover, the material retains excellent oil absorption capability upon repetitive compression cycles. The versatility of this novel sorbent has been extended for the real-time spontaneous detection of oils by taking advantage of electrically conducive MoS2 layers.