摘要
以泡沫镍为基底材料,通过水热法成功制备了La掺杂的NiAl双层氢氧化物改性泡沫镍的NF@La-NiAl-LDHs油水分离膜.借助扫描电子显微镜(SEM)、能量色散光谱仪(EDS)和X射线衍射仪(XRD)等分析手段,研究了La掺杂对NF@NiAl-LDHs膜的结构、形貌和油水分离性能的影响,并通过La对膜改性前后的对比分析得到了性能最佳的油水分离膜.结果表明:改性后膜的形貌发生改变,纳米片越发致密且黏连;当La的摩尔分数为1.5%时,所得NF@La-NiAl-LDHs膜表现出优异的超亲水性和水下超疏油性,油水分离效率可达99.89%;在可见光照射下,该膜还展现出良好的自清洁能力,经60次循环实验膜的油水分离效率可恢复到99.69%,说明其适用于长循环油水分离实际应用.
Using nickel-foam as the substrate material,the Ni-Al double-layer hydroxide-modified nickel foam of NF@NiAl-LDHs oil-water separation membrane was successfully prepared through hydrothermal process.The influence of La doping on the structure,morphology and separation performance of NF@NiAl-LDHs membrane was systematically investigated by scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy(EDS),X-ray diffraction(XRD),etc.And the optimal membrane of NF@LaNiAl-LDHs-2 was identified by comparing the results before and after modification.The results show that the morphology of the modified membrane has changed,with the nanosheets becoming increasingly dense and adhering to each other.When the La content is fixed at 1.5%,the membrane exhibits the superhydrophilicity and underwater superoleophobicity,affording an oil-water separation efficiency as high as 99.89%.Under visible light irradiation,the membrane also demonstrates the excellent self-cleaning ability.Its separation efficiency can be restored to 99.69%after 60 cycles,indicating the great potential for long-term practical oil-water separation applications.
作者
郎集会
张郡怡
褚明阳
孟子涵
张轩畅
孙铭阳
LANG Jihui;ZHANG Junyi;CHU Mingyang;MENG Zihan;ZHANG Xuanchang;SUN Mingyang(College of Physics,Jilin Normal University,Siping 136000,China)
出处
《吉林师范大学学报(自然科学版)》
2026年第1期29-34,共6页
Journal of Jilin Normal University(Natural Science Edition)
基金
国家自然科学基金项目(22378158)
吉林省科技发展计划项目(20230508040RC)。
关键词
水热法
LDH基油水分离膜
掺杂改性
长循环性能
hydrothermal process
LDH-based oil-water separation membrane
doping modification
long cycle performance
