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        Fabricated superhydrophobic three-dimensional rambutan-like-β- NiOOH @sponge skeletons for multitasking oil–water separation

        Minxuan Li,Xu Xu,Lei Zhang 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.84 No.-

        In this paper, oleophilic and superhydrophobic sponges were successfully constructed via a one-pot lowtemperature hydrothermal method anchoring three-dimensional rambutan-like-β-NiOOH microspheresinto sponge skeletons and lauric acid modification. The constructed modified three-dimensionalrambutan-like-β-NiOOH @sponge (the static contact angle of 153.5 ) possessed outstanding oil sorptioncapacity (separation efficiency is nearly 99%) towards the various organics/oils and excellent recyclabilityafter 30 cycles of adsorption-squeezing. Importantly, modified three-dimensional rambutan-like-β-NiOOH @sponge is capable of separating surfactant-stabilized water-in-oil emulsions and can be utilizedfor continuous oil-water separation with the aid of a peristaltic pump. This is mainly due to the fact thatthe three-dimensional hierarchical rambutan-like micronano structure formed by self-assembly withhigh specific surface area provides a large number of hydrophobic interfaces to improve the hydrophobicproperties of sponges. This work presents a new strategy for the designs multitasking oil-waterseparation materials.

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        Fabricated smart sponge with switchable wettability and photocatalytic response for controllable oil-water separation and pollutants removal

        Xu Xu,Minxuan Li,Xiang Li,Lei Zhang 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.92 No.-

        Stimuli-responsive materials with the controllable oil-water separation and water further purificationabilities show great potential in practical applications. In this paper, a highly effective and eco-friendlysmart pH-responsive melamine sponge with switchable wettability and photocatalytic activity wasprepared via anchoring three-dimensional cell-like BiOCl microspheres into sponge skeletons and beingmodified by dodecanedioic acid and lauric acid. The obtained sponge shows rapidly switchablewettability and can separate various oil/water mixtures with high efficiency up to 99%. Moreover, the aspreparedsmart sponge also demonstrates reliable photocatalytic ability and could remove the solublepollutants (such as methylene blue and Sudan III) under visible light as well as UV light (degradationefficiency around 100%). Besides, the smart pH-responsive material showed satisfactory reusability andstability. This smart multifunctional material has outstanding potential in water resource purification.

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