Caffeic acid polymer rapidly modified sponge with excellent anti-oil-adhesion property and efficient separation of oil-in-water emulsions

Wang, Huicai; Gao, Feng; Ren, Ruili; Wang, Zhenwen; Yue, Ruirui; Wei, Junfu; Wang, Xiaolei; Kong, Zhiyun; Zhang, Huan; Zhang, Xiaoqing

doi:10.1016/j.jhazmat.2020.124197

Cited by 57 publications

(15 citation statements)

References 62 publications

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“…On the other hand, partial hydrolysis of PDMS occurs under strong alkaline conditions, resulting in the decrease of the lipophilicity of the adsorbent. The results were consistent with the reported in the literature (Cai et al 2019;Wang et al 2021), which the contact angle of modified MS firstly increases and then decreases with the increase of solution pH, and reaches the maximum value when pH ¼ 7.…”

Section: Effect Of Ph On the Oil-water Adsorption Capacity Of Ms/tio 2 /Pdms Spongesupporting

confidence: 93%

Facile synthesis of superhydrophobic MS/TiO2/PDMS sponge for efficient oil–water separation

Yang

Jia

et al. 2021

Water Science and Technology

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In order to obtain a kind of superhydrophobic sponge with high oil and water selectivity, the MS/TiO2/PDMS sponge were prepared via a two-step hydrophobic fabrication based on the melamine sponge (MS), tetrabutyl titanate (TBOT) and polydimethylsiloxane (PDMS). The effects of modification time, the concentrations of TBOT and PDMS on the properties of the MS/TiO2/PDMS sponge were studied, and the separation mechanism was also discussed based on the interaction between the oil and the surface of the MS/TiO2/PDMS sponge. The results suggest that under optimal conditions, the MS/TiO2/PDMS sponge show superhydrophobicity. The contact angle and adsorption capacity for oil of the MS/TiO2/PDMS sponge are 149.2° and 98.5 g·g−1, respectively, and they can be recycled about 25 cycles after oil-water separation test. This study aims at preparing a new composite material with high oil-water selectivity, which lays a good foundation for the development and research of new oil adsorbent.

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Section: Effect Of Ph On the Oil-water Adsorption Capacity Of Ms/tio 2 /Pdms Spongesupporting

confidence: 93%

Facile synthesis of superhydrophobic MS/TiO2/PDMS sponge for efficient oil–water separation

Yang

Jia

et al. 2021

Water Science and Technology

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“…(3) Highly folded compaction: The porous network sequentially collapses to turn into a dense structure with the strain higher than 45%. The exhibited hysteresis lines reveal that there is energy dissipation during the loading and unloading process, which is mainly due to the buckling of the aerogel skeleton [ 34 , 35 ]. The 10 times cyclic compression of F-CS aerogel was studied under the strain of 50% and their stress-strain curves are illustrated in Figure 4 B.…”

Section: Resultsmentioning

confidence: 99%

Sustainable, Highly Efficient and Superhydrophobic Fluorinated Silica Functionalized Chitosan Aerogel for Gravity-Driven Oil/Water Separation

Zhu

Jiang

Liu

et al. 2021

Gels

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A superhydrophobic fluorinated silica functionalized chitosan (F-CS) aerogel is constructed and fabricated by a simple and sustainable method in this study in order to achieve highly efficient gravity-driven oil/water separation performance. The fluorinated silica functionalization invests the pristine hydrophilic chitosan (CS) aerogel with promising superhydrophobicity with a water contact angle of 151.9°. This novel F-CS aerogel possesses three-dimensional structure with high porosity as well as good chemical stability and mechanical compression property. Moreover, it also shows striking self-cleaning performance and great oil adsorption capacity. Most importantly, the as-prepared aerogels exhibits fast and efficient separation of oil/water mixture by the gravity driven process with high separation efficiency. These great performances render the prepared F-CS aerogel a good candidate for oil/water separation in practical industrial application.

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“…Alternatively, the absorptionbased methods offer an energy-saving and facile approach for oil−water separation by taking the advantage of a large liquid storage space inside of a highly porous network, which has now been considered as one of the most promising cleaning technologies for oil recovery from the accidental spills. 16,17 Intensive research efforts have been devoted to the development of porous sorbents, including but not limited to functional melamine foams/sponges (MF), 18,19 polyurethane foams (PU), 20,21 cellulose aerogels, 22 carbon aerogels, 23 and graphene aerogels. 24,25 These materials often possess a superhydrophobic/oleophilic scaffold surface in order to effectively absorb and trap oils by the capillary force for enabling a high oil absorption capacity.…”

Section: Introductionmentioning

confidence: 99%

“…Intensive research efforts have been devoted to the development of porous sorbents, including but not limited to functional melamine foams/sponges (MF), , polyurethane foams (PU), , cellulose aerogels, carbon aerogels, and graphene aerogels. , These materials often possess a superhydrophobic/oleophilic scaffold surface in order to effectively absorb and trap oils by the capillary force for enabling a high oil absorption capacity. However, most of these reported porous materials are challenged by uptaking crude oil, which has extremely sluggish diffusion dynamics due to its significantly higher viscosity (and much lower fluidity) compared to other common organic solvents/oils.…”

Section: Introductionmentioning

confidence: 99%

Solar-Assisted, Fast, and In Situ Recovery of Crude Oil Spill by a Superhydrophobic and Photothermal Sponge

Niu

Wang

et al. 2021

ACS Appl. Mater. Interfaces

101

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Development of a functional sorbent for effective crude oil absorption is essential to address large-scale spilling incidents. Herein, we demonstrate a facile method for preparing a superhydrophobic and photothermal PDMS/CuS/PDA@MF sponge through sequential depositions of PDA, CuS nanoparticles, and a PDMS layer onto a melamine sponge. The optimized composite sponge exhibits a superhydrophobic surface property, high absorption capacity for oils, robust recycling, and excellent photothermal conversion performance. Under sunlight irradiation, the sponge can be rapidly heat up for effectively reducing the viscosity of the surrounding crude oil in order to enhance its fluidity. As a result, uptake of crude oil can be achieved continuously at approximately 5.3 g/min using a peristaltic pump. Overall, we believe that a simple fabrication method from low-cost reagents and excellent crude oil remediation performance render the PDMS/CuS/PDA@MF sponge as an excellent sorbent candidate for remediating crude oil spill.

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Caffeic acid polymer rapidly modified sponge with excellent anti-oil-adhesion property and efficient separation of oil-in-water emulsions

Cited by 57 publications

References 62 publications

Facile synthesis of superhydrophobic MS/TiO2/PDMS sponge for efficient oil–water separation

Facile synthesis of superhydrophobic MS/TiO2/PDMS sponge for efficient oil–water separation

Sustainable, Highly Efficient and Superhydrophobic Fluorinated Silica Functionalized Chitosan Aerogel for Gravity-Driven Oil/Water Separation

Solar-Assisted, Fast, and In Situ Recovery of Crude Oil Spill by a Superhydrophobic and Photothermal Sponge

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