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Preparation and properties of a silver particle-coated and 1-dodecanethiol-modified superhydrophobic melamine sponge for oil/water separation
Frontiers of Chemical Science and Engineering ( IF 4.5 ) Pub Date : 2022-03-29 , DOI: 10.1007/s11705-022-2140-8
Xiaofei Sun 1 , Shijie Feng 1 , Zhe Zhang 1 , Pengyu Zhang 1 , Jiefeng Zhao 1 , Yunling Gao 1 , Junxian Yun 1
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A Ag particle-coated and 1-dodecanethiol-modified melamine sponge (Ag-DDT-MS) was prepared through surface roughness by coating silver particles and subsequent grafting of a hydrophobic long hydrocarbon chain. Superhydrophobic and 3D porous Ag-DDT-MS was characterized by Fourier transform infrared spectroscopy, scanning electron microscope, energy-dispersive X-ray spectroscopy, and X-ray diffraction. The water contact angle of Ag-DDT-MS reached 159.2°. Ag-DDT-MS exhibited excellent absorption capacity for high viscous oils and organic solvents, ranging from 42.8 to 105.2 g·g−1. The absorbed oils can be easily collected by the mechanical pressing process, and the oil recovery rate was satisfactory, more than 90% after 20 recycles. Ag-DDT-MS material also demonstrated good stability and excellent compression-recovery ability, keeping 88.6% of the initial height after ten compression-release cycles.



中文翻译:

用于油水分离的银颗粒包覆1-十二硫醇改性超疏水三聚氰胺海绵的制备及性能

通过涂覆银颗粒并随后接枝疏水长烃链,通过表面粗糙度制备了Ag颗粒涂层和1-十二烷硫醇改性的三聚氰胺海绵(Ag-DDT-MS)。通过傅里叶变换红外光谱、扫描电子显微镜、能量色散 X 射线光谱和 X 射线衍射对超疏水和 3D 多孔 Ag-DDT-MS 进行了表征。Ag-DDT-MS的水接触角达到159.2°。Ag-DDT-MS 对高粘度油和有机溶剂表现出优异的吸收能力,范围为 42.8 至 105.2 g·g -1. 通过机械压榨工艺可以很容易地收集吸附的油脂,回收率令人满意,20次循环后回收率达到90%以上。Ag-DDT-MS 材料还表现出良好的稳定性和优异的压缩恢复能力,在十次压缩释放循环后保持初始高度的 88.6%。

更新日期:2022-03-29
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