期刊
LANGMUIR
卷 35, 期 45, 页码 14473-14480出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.9b02583
关键词
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资金
- National Natural Science Foundation of China Project [51573088]
- Fundamental Research Funds for the Central Universities [50321041917001]
To prepare intelligent controllable oil/water separation materials with high mechanical stability and good recyclability, we fabricated a novel pH-controlled wettability melamine sponge by using a facile dipcoating method. The coated sponge exhibits reversibly switchable wettability between superhydrophilicity-superoleophobicity through acidic surrounding and superhydrophobicity-superoleophilicity under neutral or alkaline conditions. The as-prepared sponge possesses excellent absorption capacity (46.06-122.81 g/g) and oil/water separation efficiency (above 98%). The coated sponge also has good mechanical stability and recyclability which means it can be reused for absorption and oil/water separation. This smart porous material, which can flexibly transform wettability on demand, has great application prospects in oil/water separation.
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