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Chelation Assembly of Cellulose Nanohydrogel onto Flower-Like Structured Foam with Underwater Superoleophobicity for Highly Efficient Oil–Water Separation
Nano ( IF 1.0 ) Pub Date : 2021-05-18 , DOI: 10.1142/s1793292021500612 Yuntian Wan 1 , Xue Lin 1 , Zhongshuai Chang 2 , Xiaohui Dai 2 , Jiangdong Dai 2
Nano ( IF 1.0 ) Pub Date : 2021-05-18 , DOI: 10.1142/s1793292021500612 Yuntian Wan 1 , Xue Lin 1 , Zhongshuai Chang 2 , Xiaohui Dai 2 , Jiangdong Dai 2
Affiliation
Currently, with the increasingly serious pollution problem of oily wastewater, it is urgent to develop advanced materials and methods. In this work, a Fe(III)-CMC@Ni(OH)2@Ni composite foam with superhydrophilic and underwater superoleophobicity was fabricated by an in situ growth of flower-like Ni(OH)2 nanoparticles and chelated assembly of Fe(III)-CMC nanohydrogel via a layer-by-layer self assembly using Fe 3 + ion and carboxymethyl cellulose (CMC). The composite foam could separate various oil/water mixtures and exhibited excellent efficiency over 99%. This foam possessed ultrahigh water flux (220000 L m − 2 h − 1 ) and better resistant to penetration pressure (1.3 kPa). After 30 cycles, the oil–water separation performance reduced only 0.5%, but the foam structure was still stable that guarantees a better lifetime. Besides, this composite foam showed anti-fouling, unique durability and excellent corrosion resistance performance. Taking into account all good properties, Fe(III)-CMC@Ni(OH)2@Ni composite foam was expected to be a potential candidate for responding to all kinds of complex oily wastewater conditions.
中文翻译:
纤维素纳米水凝胶螯合组装到具有水下超疏油性的花状结构泡沫上,实现高效油水分离
当前,随着含油废水污染问题的日益严重,迫切需要开发先进的材料和方法。在这项工作中,一种具有超亲水和水下超疏油性的 Fe(III)-CMC@Ni(OH) 2 @Ni 复合泡沫由原位 花状 Ni(OH) 2纳米粒子的生长和 Fe(III)-CMC 纳米水凝胶的螯合组装通过逐层自组装使用铁 3 + 离子和羧甲基纤维素(CMC)。复合泡沫可以分离各种油/水混合物,并表现出超过99%的优异效率。这种泡沫具有超高的水通量(220000 大号米 - 2 H - 1 ) 并且更好地抵抗穿透压力(1.3 千帕)。30次循环后,油水分离性能仅降低0.5%,但泡沫结构仍然稳定,保证了更长的使用寿命。此外,这种复合泡沫还具有防污、独特的耐久性和优异的耐腐蚀性能。考虑到所有良好的性能,Fe(III)-CMC@Ni(OH) 2 @Ni 复合泡沫有望成为应对各种复杂含油废水条件的潜在候选者。
更新日期:2021-05-18
中文翻译:
纤维素纳米水凝胶螯合组装到具有水下超疏油性的花状结构泡沫上,实现高效油水分离
当前,随着含油废水污染问题的日益严重,迫切需要开发先进的材料和方法。在这项工作中,一种具有超亲水和水下超疏油性的 Fe(III)-CMC@Ni(OH) 2 @Ni 复合泡沫由