Synthesis of lignin-based polyurethane/graphene oxide foam and its application as an absorbent for oil spill clean-ups and recovery

Oribayo, Oluwasola; Feng, Xinbin; Rempel, Garry L.; Pan, Qinmin

doi:10.1016/j.cej.2017.04.054

Cited by 190 publications

(72 citation statements)

References 56 publications

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“…Open cell PUFs are a broad class of polymers having urethane moieties [22][23][24][25]. This class of polymers represents one of the most important three-dimensional (3D) products commercially available for fabricating super hydrophobic adsorbents for many organic and inorganic complex species [24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Chromatographic Separation, Total Determination and Chemical Speciation of Mercury in Environmental Water Samples Using 4-(2-Thiazolylazo) Resorcinol-Based Polyurethane Foam Sorbent-Packed Column

Al-Bagawi¹,

Ahmad²,

Alwael³

et al. 2019

Chemometrics and Data Analysis in Chromatography

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A simple method has been developed for quantitative retention of traces of mercury(II) ions from aqueous media using polyurethane foams (PUFs) loaded with 4-(2-thiazolylazo) resorcinol (TAR). The kinetics and thermodynamics of the sorption of mercury(II) ions onto PUFs were studied. The sorption of mercury(II) ions onto PUF follows a first-order rate equation with k = 0.176 ± 0.010 min −1. The negative values of ΔH and ΔS may be interpreted as the exothermic chemisorption process and indicative of a faster chemisorption onto the active sites of the sorbent. The sorption data followed Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models. The D-R parameters β, K DR and E were 0.329 mol 2 kJ −2 , 0.001 μmol g −1 and 1.23 ± 0.07 kJ/mol for the TAR-loaded PUFs, respectively. An acceptable retention and recovery (99.6 ± 1.1%) of mercury(II) ions in water at ≤10 ppb by the TAR-treated PUFs packed columns were achieved. A retention mechanism, involving absorption related to "solvent extraction" and an "added component" for surface adsorption, was suggested for the retention of mercury(II) ions by the used solid phase extractor. The performance of TAR-immobilized PUFs packed column in terms of the number (N), the height equivalent to a theoretical plate (HETP), the breakthrough and critical capacities of mercury(II) ion uptake by the sorbent packed column were found to be 50.0 ± 1.0, 1.01 ± 0.02 mm, 8.75 and 13.75 mg/g, respectively, at 5 mL/min flow rate.

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Section: Introductionmentioning

confidence: 99%

Chromatographic Separation, Total Determination and Chemical Speciation of Mercury in Environmental Water Samples Using 4-(2-Thiazolylazo) Resorcinol-Based Polyurethane Foam Sorbent-Packed Column

Al-Bagawi¹,

Ahmad²,

Alwael³

et al. 2019

Chemometrics and Data Analysis in Chromatography

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“…In spite of these recent advances in the development of sorbent materials for oil spill applications, the fabrication processes for most sorbent materials are still complicated and costly, and sophisticated equipment is often required. In addition, the superhydrophobic stability of these sorbent materials are not fully elucidated, which restrict their industrial applications . Formaldehyde‐melamine‐sodium bisulfite copolymer sponge (FMSS) is a commercially available superhydrophilic polymeric sponge and a desirable substrate for fabricating cost‐effective functionalized sorbent for oil spill clean‐ups.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the superhydrophobic stability of these sorbent materials are not fully elucidated, which restrict their industrial applications. 24 Formaldehyde-melamine-sodium bisulfite copolymer sponge (FMSS) is a commercially available superhydrophilic polymeric sponge and a desirable substrate for fabricating cost-effective functionalized sorbent for oil spill clean-ups. It is an ultralight 3-D porous material with inherent high water sorption capacity, good elasticity, and low density.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic surface modification of FMSS and its application as effective sorbents for oil spill clean‐ups and recovery

et al. 2017

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Superhydrophobic sponge‐like materials are attracting more attention in recent years as potential sorbent materials for oil spill clean‐up. In this work, the authors report the incorporation of hydrophobic structural features into a superhydrophilic pristine formaldehyde‐melamine‐sodium bisulfite copolymer sponge (FMSS) by N‐acylation with a fatty acid derivative, for use as an oil sorbent in oil spill clean‐ups. This resulted in our ability to transform the surface properties of the sponge skeleton to superhydrophobic with a contact angle of 143°. The acylated FMSS (a‐FMSS) was shown to retain the interconnected porous structure, and was characterized with microscopic and spectroscopic analyses. Sorption experiments with engine oil and chloroform showed that a‐FMSS had a very high oil sorption capacity (amounting to 99 and 168.2 times its own weight respectively) than commercial nonwoven polypropylene sorbent. In this view, a‐FMSS is considered to be a promising oil sorbent for potential applications in large‐scale oil spill clean‐ups. © 2017 American Institute of Chemical Engineers AIChE J, 63: 4090–4102, 2017

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“…Most 3D graphene assemblies are acquired by reducing graphene oxide (GO), which features hydrophobic and hydrophilic domains, synthesized from graphite powder based on the well-known Hummers' method. Oribayo et al [29] employed polydopamine-reduced graphene oxide and octadecylamine to modify the surface of Superamphiphilic materials are attracting significant attention because of their unique affinity to both water and oil. Ren et al [28] reported a robust graphene aerogel (water contact angle close to 150.5°) prepared by resorcinol-formaldehyde (RF) sol-gel chemistry for absorbing oils and organic solvents, and the absorption capacity of various oils and organic solvents was up to 19-26 times of its own weight.…”

mentioning

confidence: 99%

“…[26] Singh et al [27] demonstrated that superhydrophobic graphene foams (water contact angle (WCA) approach 163°) were synthesized by using template-directed chemical vapor deposition, which contained pores with the size of several hundreds of micrometers, while the walls of the foam was comprised of few-layer graphene sheets coated with Teflon. Oribayo et al [29] employed polydopamine-reduced graphene oxide and octadecylamine to modify the surface of Superamphiphilic materials are attracting significant attention because of their unique affinity to both water and oil. Oribayo et al [29] employed polydopamine-reduced graphene oxide and octadecylamine to modify the surface of Superamphiphilic materials are attracting significant attention because of their unique affinity to both water and oil.…”

mentioning

confidence: 99%

Superamphiphilic Polyurethane Foams Synergized from Cellulose Nanowhiskers and Graphene Nanoplatelets

Zhang

Liu

Sui

2017

Adv Materials Inter

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oil are lower than 10°). In 1997, Fujishima and co-workers [14] first reported the photogeneration of a superamphiphilic titanium dioxide surface, producing the microstructure composed of both hydrophilic and oleophilic phases by ultraviolet irradiation. Up to date, two approaches are used to construct superhydrophilic surfaces: one is that some special materials are induced to produce superhydrophilic properties under UV illumination conditions, i.e., photoinduced superhydropholic materials, such as TiO 2 , ZnO, and SnO 2 , [15,16] in which the slightly hydrophilic surface turned to highly hydrophilic surface; the other approach is to increase the surface roughness the hydrophilic material or to create a rough surface by assembling hydrophilic coatings, which is similar to the method of preparing superoleophilic surfaces. [17] Surface roughness, defined as the ratio of the actual surface area to the geometric surface area, has a critical effect on the wettability. It can adjust the wetting characteristics of materials, [18] based on the classical Wenzel [19] and Cassie and Baxter [20] models.Graphene, [21] a one-atom-thick planar sheet in a 3D honeycomb network arranged by carbon atoms, has drawn increasing attention due to high surface area, excellent thermal and chemical stability, and outstanding electrical conductivity since the famous 2004 "scotch tape" experiment by Novoselov et al. [22] 3D graphene-based materials [23][24][25] were extensively studied because of their superhydrophobicity, superior liquid absorption capacity, and excellent stability under harsh chemical and physical conditions. Most 3D graphene assemblies are acquired by reducing graphene oxide (GO), which features hydrophobic and hydrophilic domains, synthesized from graphite powder based on the well-known Hummers' method. [26] Singh et al. [27] demonstrated that superhydrophobic graphene foams (water contact angle (WCA) approach 163°) were synthesized by using template-directed chemical vapor deposition, which contained pores with the size of several hundreds of micrometers, while the walls of the foam was comprised of few-layer graphene sheets coated with Teflon. Ren et al. [28] reported a robust graphene aerogel (water contact angle close to 150.5°) prepared by resorcinol-formaldehyde (RF) sol-gel chemistry for absorbing oils and organic solvents, and the absorption capacity of various oils and organic solvents was up to 19-26 times of its own weight. Oribayo et al. [29] employed polydopamine-reduced graphene oxide and octadecylamine to modify the surface of Superamphiphilic materials are attracting significant attention because of their unique affinity to both water and oil. It is generally accepted that graphene-based assemblies are hydrophobic. Here, novel superamphiphilic polyurethane (PU) foams by the synergetic effect of cellulose nanowhiskers (CNWs) and graphene nanosheets (GNs) are reported. This process involves the creation of CNWs' base coating on the surface of PU network prior to GN coatings to obtain superamphiphilic surf...

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Synthesis of lignin-based polyurethane/graphene oxide foam and its application as an absorbent for oil spill clean-ups and recovery

Cited by 190 publications

References 56 publications

Chromatographic Separation, Total Determination and Chemical Speciation of Mercury in Environmental Water Samples Using 4-(2-Thiazolylazo) Resorcinol-Based Polyurethane Foam Sorbent-Packed Column

Chromatographic Separation, Total Determination and Chemical Speciation of Mercury in Environmental Water Samples Using 4-(2-Thiazolylazo) Resorcinol-Based Polyurethane Foam Sorbent-Packed Column

Hydrophobic surface modification of FMSS and its application as effective sorbents for oil spill clean‐ups and recovery

Superamphiphilic Polyurethane Foams Synergized from Cellulose Nanowhiskers and Graphene Nanoplatelets

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