Polydopamine-coated graphene nanosheets as efficient electrocatalysts for oxygen reduction reaction

Wang, Dandan; Gao, Xiuli; Zhao, Lianming; Zhou, Jin; Zhuo, Shuping; Zhang, Yan; Wang, Xing

doi:10.1039/c8ra01027g

Cited by 16 publications

(9 citation statements)

References 49 publications

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“…Thus, they used GO@PDA as an electrocatalyst for oxygen reduction. Compared with Pt-based catalysts, the GO@PDA exhibited better stability and methanol resistance . In another study by Zhang et al , GO@PDA was utilized as a separation membrane .…”

Section: Surface Modificationmentioning

confidence: 99%

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Versatile Polydopamine Platforms: Synthesis and Promising Applications for Surface Modification and Advanced Nanomedicine

et al. 2019

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As a mussel-inspired material, polydopamine (PDA), possesses many properties, such as a simple preparation process, good biocompatibility, strong adhesive property, easy functionalization, outstanding photothermal conversion efficiency, and strong quenching effect. PDA has attracted increasingly considerable attention because it provides a simple and versatile approach to functionalize material surfaces for obtaining a variety of multifunctional nanomaterials. In this review, recent significant research developments of PDA including its synthesis and polymerization mechanism, physicochemical properties, different nano/microstructures, and diverse applications are summarized and discussed. For the sections of its applications in surface modification and biomedicine, we mainly highlight the achievements in the past few years (2016–2019). The remaining challenges and future perspectives of PDA-based nanoplatforms are discussed rationally at the end. This timely and overall review should be desirable for a wide range of scientists and facilitate further development of surface coating methods and the production of PDA-based materials.

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Section: Surface Modificationmentioning

confidence: 99%

“…Compared with Pt-based catalysts, the GO@PDA exhibited better stability and methanol resistance. 106 In another study by Zhang et al, GO@PDA was utilized as a separation membrane. 107 They reported that the PDA coating could modulate the microstructure of GO and the size of membrane nanochannels.…”

Section: Surface Modificationmentioning

confidence: 99%

Versatile Polydopamine Platforms: Synthesis and Promising Applications for Surface Modification and Advanced Nanomedicine

et al. 2019

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“…As shown in Figure 1 c, a sharp diffraction peak (2θ = 11.7°) was assigned to the 002 plane of GO with d-spacing of 0.95 nm. After adding PDA, the peak shifts to smaller angle (2θ = 10.8°), indicating the decrease of d-spacing [ 42 ]. As for HNTs, by the addition of PDA, no chemical reaction occurs between the nanotubes and PDA.…”

Section: Resultsmentioning

confidence: 99%

Anchoring Water Soluble Phosphotungstic Acid by Hybrid Fillers to Construct Three-Dimensional Proton Transport Networks

Dai

et al. 2021

Membranes

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Phosphotungstic acid (HPW)-filled composite proton exchange membranes possess high proton conductivity under low relative humidity (RH). However, the leaching of HPW limits their wide application. Herein, we propose a novel approach for anchoring water soluble phosphotungstic acid (HPW) by polydopamine (PDA) coated graphene oxide and halloysite nanotubes (DGO and DHNTs) in order to construct hybrid three-dimensional proton transport networks in a sulfonated poly(ether ether ketone) (SPEEK) membrane. The introduction of PDA on the surfaces of the hybrid fillers could provide hydroxyl groups and secondary amine groups to anchor HPW, resulting in the uniform dispersion of HPW in the SPEEK matrix. The SPEEK/DGO/DHNTs/HPW (90/5/5/60) composite membrane exhibited higher water uptake and much better conductivity than the SPEEK membrane at low relative humidity. The best conductivity reached wass 0.062 S cm−1 for the composite membrane, which is quite stable during the water immersion test.

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“…Considering other catalysts, PDA/rGO showed an excellent durability in 70 000 cycles in the oxygen reduction reaction with remaining current densities of 83 % . A Ag 0 ‐PDA/Fe 3 O 4 preparation gave an average yield of 98 % in 27 repeated uses in the decomposition of methylene blue .…”

Section: Discussionmentioning

confidence: 99%

“…The final example is about the fabrication of PDA/reduced graphene oxide (rGO) composites by reacting GO nanosheets and dopamine/Tris (85 °C, 75 h) . GO is usually prepared by the Hummers method (oxidizing graphite powder with KMnO 4 in a solution of conc.…”

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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Polydopamine-coated graphene nanosheets as efficient electrocatalysts for oxygen reduction reaction

Abstract: Polydopamine-coated graphene nanosheets show excellent electrocatalytic activity towards oxygen reduction reaction.

Cited by 16 publications

References 49 publications

Versatile Polydopamine Platforms: Synthesis and Promising Applications for Surface Modification and Advanced Nanomedicine

Versatile Polydopamine Platforms: Synthesis and Promising Applications for Surface Modification and Advanced Nanomedicine

Anchoring Water Soluble Phosphotungstic Acid by Hybrid Fillers to Construct Three-Dimensional Proton Transport Networks

Polydopamine – its Prolific Use as Catalyst and Support Material

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