聚偏氟乙烯
吸附
纳米纤维
材料科学
化学工程
静电纺丝
纤维
氧化物
解吸
石墨烯
复合材料
纳米技术
聚合物
化学
有机化学
冶金
工程类
作者
Qingfeng Wang,Zungui Shao,Jiaxin Jiang,Yifang Liu,Xiang Wang,Wenwang Li,Gaofeng Zheng
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-09-08
卷期号:12 (18): 3115-3115
被引量:8
摘要
Mass loading of functional particles on the surface of nanofibers is the key to efficient heavy metal treatment. However, it is still difficult to prepare nanofibers with a large number of functional particle loads on the surface simply and efficiently, which hinders the further improvement of performance and increases the cost. Here, a new one-step strategy was developed to maximize the adhesion of graphene oxide (GO) particle to the surface of polyvinylidene fluoride (PVDF) nanofibers, which was combined with coaxial surface modification technology and blended electrospinning. The oxygen content on the as-prepared fiber surface increased from 0.44% to 9.32%, showing the maximized GO load. The increased adsorption sites and improved hydrophilicity greatly promoted the adsorption effect of Cr(VI). The adsorption capacity for Cr(VI) was 271 mg/g, and 99% removal rate could be achieved within 2 h for 20 mL Cr(VI) (100 mg/L), which was highly efficient. After five adsorption-desorption tests, the adsorption removal efficiency of the Cr(VI) maintained more than 80%, exhibiting excellent recycling performance. This simple method achieved maximum loading of functional particles on the fiber surface, realizing the efficient adsorption of heavy metal ions, which may promote the development of heavy-metal-polluted water treatment.
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