High porosity and hydrophobic cellulosic sponges for oil absorption

Du, Qiuping; Yu, Jiajing; Xu, Xianlin; Xia, L.; Zhuang, Xupin

doi:10.1007/s12221-023-00098-8

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…As shown, S-MMP@MS was 54.3 to 136.7 times its own weight (Table S1), demonstrating excellent saturated adsorption capacity. Compared with reported porous materials for oil–water separation (Figure S6), − the saturated adsorption capacity of the S-MMP sponge allowed it to exhibit better oil–water separation performance. It is worth noting here that the adsorption capacity of the modified sponges basically increased with the increase in the solvent density (Figure S7).…”

Section: Resultsmentioning

confidence: 90%

In Situ Redox Strategy to Fabricate Superhydrophobic Sponges for Efficient Oil–Water Separation

Ji,

Jia,

Chen

2024

ACS Appl. Polym. Mater.

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sponge (S-MMP@MS) with highly efficient oil−water separation was prepared. MnO 2 nanoparticles were loaded onto melamine sponges through the in situ redox reaction between AF-MWCNTs and KMnO 4 . To further enhance the hydrophobic properties of the modified sponges, a nontoxic polydimethylsiloxane (PDMS) glue layer was fixed on the sponges by dip-coating. The S-MMP@MS demonstrated excellent superhydrophobicity (with a water contact angle of 156.8°), a high adsorption capacity (54.3−136.7 g/g), and excellent recyclability (50 times of the adsorption−extrusion cycle). In addition to immiscible oil−water mixtures, the modified sponges can separate water-in-oil emulsions and oil-in-water emulsions with equal effectiveness (the separation rate exceeded 99.0%). Furthermore, the modified sponges can maintain stable superhydrophobicity in simulated complex marine environments, including acidic environments, alkaline environments, corrosive conditions, different temperatures, and mechanical compression. The superhydrophobic melamine sponges are expected to be a potential material for oil spill treatment due to their excellent oil−water separation efficiency, reusability, environmental suitability, and mechanical stability.

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