Polydopamine-coated open cell polyurethane foam as an efficient and easy-to-regenerate soft structured catalytic support (S 2 CS) for the reduction of dye

Lefebvre, Louis Philippe; Kelber, Julien; Jierry, Loı̈c; Ritleng, Vincent; Édouard, David

doi:10.1016/j.jece.2016.11.025

Cited by 26 publications

(21 citation statements)

References 43 publications

(48 reference statements)

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“…Remarkably no deactivation was observed in the 2 nd and 3 rd runs, with discoloration ratios over 95% in 25 min (Figure 5a 5). Even more remarkably, these results compare advantageously, both in terms of kinetics and efficiency, with the average activity observed for five consecutive runs with PDA@OCPUF (180 mg) in the presence of a large excess of NaBH 4 (0.1 M); a fresh solution of NaBH 4 being used at each run (Figure 5a-PDA@OCPUF with NaBH 4 0.1 M) [31]. Furthermore, in the absence of NaBH 4 , only 11% MB removal was observed after 25 min (Figure 5a-PDA@OCPUF without NaBH 4 ), which shows that PDA is unable to reduce MB efficiently by itself and that MB adsorption onto PDA is not predominant here.…”

Section: Removal Of Methylene Bluesupporting

confidence: 54%

“… (a) Percentage of MB removal (50 mL, 2 x 10 −5 M, 1 μmol) as a function of reaction time with (i) NaBH 4 @PDA‐NaIO 4 @OCPUF (OCPUF: 195 mg; PDA: 12 mg; B: 21.1 mg/kg, i.e . 0.40 μmol), runs 1 to 5, (ii) PDA@OCPUF with added NaBH 4 in the medium (0.1 M); average activity of 5 consecutive runs , and (iii) PDA@OCPUF in the absence of NaBH 4 [31]. (b) Percentage of MB removal (50 mL, 2 x 10 −5 M, 1 μmol) as a function of reaction time with NaBH 4 @PDA‐O 2 @OCPUF (OCPUF: 170 mg; PDA: 4.7 mg; B: 23.7 mg/kg, i.e .…”

Section: Resultsmentioning

confidence: 99%

“…1.56 μmol if one considers that each B atom corresponds to a

{BH}_{4}^{-}

anion) is too low for the amount of MB to be reduced in the five consecutive runs (5 μmol), especially when one consider that these reductions are carried out in water, this clearly shows the importance of PDA in the redox process. Thus, in addition to playing the role of a redox mediator (or electro‐catalyst) that allows the efficient reduction of MB by borohydrides , PDA presumably prevents the hydrolysis and oxidation of the immobilized borohydrides, and somehow participates to the reduction of MB: the reduced o ‐quinone functionalities (to catechols) that were generated during the NaBH 4 ‐functionalization serving as an additional source of electrons. This would explain that the thicker the PDA layer, the higher the reducing ability of the resulting NaBH 4 @PDA@OCPUF material.…”

Section: Resultsmentioning

confidence: 99%

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Borohydride‐functionalized polydopamine‐coated open cell polyurethane foam as a reusable soft structured material for reduction reactions: Application to the removal of a dye

Lefebvre

Kelber

Mao

et al. 2018

Env Prog and Sustain Energy

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Open cell polyurethane foams coated with mussel‐inspired polydopamine can be used as support for borohydride anions through their complexation by the catechol groups of the polydopamine layer. This strong interaction prevents borohydride hydrolysis and oxidation, and based on the redox mediator properties of polydopamine, the so‐functionalized polydopamine‐coated open cell polyurethane foams can act as efficient and reusable soft structured materials for the reduction of methylene blue in aqueous solution without additional sodium borohydride (NaBH4). Very low amounts of released boron sub‐products and very small potential of hydrogen (pH) increase are observed in comparison to previous processes using dissolved NaBH4. This considerably reduces the environmental impact of the reducing structured material on the treated wastewater compared to the latter. © 2018 American Institute of Chemical Engineers Environ Prog, 38: 329–335, 2019

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Section: Removal Of Methylene Bluesupporting

confidence: 54%

Section: Resultsmentioning

confidence: 99%

“…1.56 μmol if one considers that each B atom corresponds to a

{BH}_{4}^{-}

Section: Resultsmentioning

confidence: 99%

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Borohydride‐functionalized polydopamine‐coated open cell polyurethane foam as a reusable soft structured material for reduction reactions: Application to the removal of a dye

Lefebvre

Kelber

Mao

et al. 2018

Env Prog and Sustain Energy

Self Cite

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“…Edouard et al. prepared catalyst 0.29 % PDA/PU by depositing PDA onto polyurethane foam (PU, 180±20 mg, 8 cm 3 ) and used it for the reduction of methylene blue (MB) with NaBH 4 . Activities decreased gradually with repeated uses from 100 % to 35 % in run 11 but partial reactivation was achieved upon keeping the sample at 67 °C for 8 h (55 % dropping below 10 % in run 13).…”

Section: Utilization Of Pda As Organocatalystmentioning

confidence: 99%

Polydopamine – its Prolific Use as Catalyst and Support Material

Molnár

2020

ChemCatChem

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Polydopamine is a mussel-inspired functional material with a unique ability to form surface coatings. It is a green, environmentally benign product available very easily for a multitude of varied applications. This review attempts to collect useful information with respect to polydopamine-based catalytic studies with the use of polydopamine and modified polydopamine preparations loaded with varied catalytically active species including metal ions and metal particles. Major sections are about the use of polydopamine as catalyst material, utilization of immobilized enzymes, removal of toxic materials, results in organic synthesis, and fuel cell applications. A few examples of chiral catalysis and results of recycling studies are also treated. Data collected and analyzed indicate the importance and high potential of polydopamine-based catalysts in sustainable chemistry. of subunits attacked by an immobilized cyclohexeneamine (5) was suggested to be the transition state of CÀ C bond formation.Edouard et al. prepared catalyst 0.29 % PDA/PU by depositing PDA onto polyurethane foam (PU, 180 � 20 mg, 8 cm 3 ) and used it for the reduction of methylene blue (MB) with NaBH 4 . [48] Activities decreased gradually with repeated uses from 100 % to 35 % in run 11 but partial reactivation was achieved upon keeping the sample at 67°C for 8 h (55 % dropping below 10 % in run 13). Exposure to air at room temperature for six days proved to be somewhat more beneficial (90 % conversion in run 14 decreasing to 48 % in run 18). In a recent study they fabricated two oxidized PDA/PU samples and then loaded them with NaBH 4 . [49] One made by the usual method (dopamine/Tris, rt, 12 h, in air; sample PDA O2 PU), whereas the other was made by treating PU in a mixture of dopamine, NaOAc, and NaIO 4 (pH 5, rt, 24 h). The sample was dried (67°C) and washed thoroughly with water (PDA NaIO4 PU). Both products were dipped into an aqueous solution of NaBH 4 (0.1 M, 10 min) to afford boron contents of 2.37 and 2.11 wt%. The catalysts tested in the degradation of MB showed high activities with efficiencies of 97 % and 98 %, respectively (NaBH 4 /MB molar ratio 40, 177 mg and 209 mg catalysts, 25 min). During five reuses, the pH of the reaction medium increased because of boron loss (0.78 wt% and 0.81 wt%). The activity of PDA NaIO4 PU decreased to 89 % in run five. However, dipping the used sample into a 0.1 M NaBH 4 solution restored the original efficiency of 98 %. This, however, was only a temporary remedy, since a low efficiency of 60 % was measured in run 10. PDA was suggested by the authors to act as a redox mediator to prevent the hydrolysis/oxidation of immobilized borohydride.This formula (5) should be moved up and placed before the paragraph starting with "Edouard et al…"The Zuo group used PDA particles (avg. diameter 240 nm) to induce the reduction of MB and rhodamine B (RhB) with NaBH 4 . [50] Quinone moieties of PDA were assumed to channel electrons from NaBH 4 to the dyes. Indeed, PDA oxidized with NaIO 4 exhibited increased degradatio...

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“…Photocatalytic degradation of organic compound and dyes * Corresponding author: ashokborhade2007@yahoo.co.in by semiconductor under UV irradiation after a visible approach to the solution of a variety of environmental problems [18,19], because of their incomplete use and washing operations considerable amount of dyes have been noticed in textile waste water [20]. The photocatalytic degradation of organic dyes were carried out using various inorganic and some organic materials such as Ba 2 TeO(PO 4 ) 2 [21], TiO 2 [22], OCPUFPDA [23], Ce Doped GeO 2 [24]. The organic dyes are found in suspension or dissolved state in the waste water [25].…”

Section: Introductionmentioning

confidence: 99%

Removal of Erioglaucine Dye from Aqueous Medium Using Ecofriendly Synthesized ZnMnO<sub>3 </sub>Photocatalyst

Borhade¹,

Tope²,

Dabhade³

2017

e-J. Surf. Sci. Nanotech.

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The hexagonal nanocrystalline ZnMnO3 powder was prepared from activated mixture by an ecofriendly solid state reaction using mechanochemical method. The synthesized catalyst was characterized by various investigative analytical techniques like Fourier Transform Infrared Spectroscopy (FT-IR), Ultraviolet-diffused reflectance Spectroscopy (UV-DRS), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) with EDAX, Transmission Electron Microscopy (TEM) and Brunauer-Emmett-Teller (BET) surface area. The average particle size of ZnMnO3 was found to be 82 nm. The photocatalytic activity of the prepared ZnMnO3 nanoparticles have been investigated by the degradation of Erioglaucine dye. It is revealed that the product exhibits a pronounced photocatalytic activity under the influence of UV-visible light irradiation. The degradation mechanism of Erioglaucine in presence of ZnMnO3 was established by using LC-MS technique.

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Polydopamine-coated open cell polyurethane foam as an efficient and easy-to-regenerate soft structured catalytic support (S 2 CS) for the reduction of dye

Cited by 26 publications

References 43 publications

Borohydride‐functionalized polydopamine‐coated open cell polyurethane foam as a reusable soft structured material for reduction reactions: Application to the removal of a dye

Borohydride‐functionalized polydopamine‐coated open cell polyurethane foam as a reusable soft structured material for reduction reactions: Application to the removal of a dye

Polydopamine – its Prolific Use as Catalyst and Support Material

Removal of Erioglaucine Dye from Aqueous Medium Using Ecofriendly Synthesized ZnMnO<sub>3 </sub>Photocatalyst

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