A polyethyleneimine-grafted graphene oxide hybrid nanomaterial: Synthesis and anti-corrosion applications

Jiang, Feng; Zhao, Wenjie; Wu, Yansheng; Wu, Yunying; Liu, Gang; Dong, Jiabin; Zhou, Kesong

doi:10.1016/j.apsusc.2019.02.193

Cited by 132 publications

(70 citation statements)

References 42 publications

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“…For example, nanodiamonds [6], TiO 2 [4], SiO 2 [7], graphene oxide [8], carbon nanotubes [9], and other micro/nanofillers have been used to greatly promote the tribological properties of EP. Similarly, EP has been widely used as a protective coating to protect metals from corrosion because of its outstanding processability, excellent chemical resistance, good electrical insulation properties, and strong adhesion to heterogeneous materials [3,10]. TiO 2 [11], SiO 2 [1], graphene oxide [10], and other micro/nanofillers have also been used to further greatly promote the corrosion resistance of EP.…”

Section: Introductionmentioning

confidence: 99%

Tribological and anti-corrosion performance of epoxy resin composite coatings reinforced with differently sized cubic boron nitride (CBN) particles

Huang

Zhao

et al. 2020

Friction

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A series of high solid content (30 wt%) epoxy resin (EP) composite coatings reinforced with differently sized cubic boron nitride (CBN) particles were fabricated successfully on 304L stainless steel. Polydopamine (PDA) was used to improve the dispersibility of CBN particles in EP. The structural and morphological features of the CBN particles and the composite coatings were characterized by Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Moreover, a UMT-3 tribometer and surface profiler were used to investigate the tribological behaviors of the as-prepared composite coatings. Electrochemical impedance spectroscopy (EIS) and Tafel analysis were used to investigate the coatings' anti-corrosion performance. The results demonstrated that the CBN fillers could effectively enhance the tribological and anti-corrosion properties of the EP composite coatings. In addition, when the additive proportion of the microsized (5 μm) and nanosized (550 nm) CBN particles was 1:1, the tribological property of the EP composite coatings was optimal for dry sliding, which was attributed to the load carrying capability of the microsized CBN particles and the toughening effect of the nanosized CBN particles. However, when the additive proportion of the microsized and nanosized CBN particles was 2:1, the tribology and corrosion resistance performance were optimal in seawater conditions. We ascribed this to the load-carrying capacity of the microparticles, which played a more important role under the seawater lubrication condition, and the more compact structure, which improved the electrolyte barrier ability for the composite coatings.

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Section: Introductionmentioning

confidence: 99%

Tribological and anti-corrosion performance of epoxy resin composite coatings reinforced with differently sized cubic boron nitride (CBN) particles

Huang

Zhao

et al. 2020

Friction

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“…Figure 3 shows the Raman spectra of the PAN-GO film, from which the characteristic peaks of the D band and G band (representing the in-plane vibration of the sp 2 carbon atom) (representing defect) are located at ∼1333.2 and ∼1599 cm –1 , respectively. 32 , 33 As shown in the Raman spectra of the PAN-GO films, the intensity ratio of I D / I G is about 1.18, which represents a higher degree of GO defects in the coating than graphitization. Therefore, it effectively acts as a barrier and prevents H + and SO 4 2– from reaching the substrate.…”

Section: Resultsmentioning

confidence: 93%

Polyacrylonitrile Infused in a Modified Honeycomb Aluminum Alloy Bipolar Plate and Its Acid Corrosion Resistance

Zeng

Hua

et al. 2020

ACS Omega

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Bipolar plates, accounting for a large proportion of proton exchange membrane fuel cells (PEMFCs), are highly susceptible to corrosion by H + , SO 4 2– , and so on because of the strong acid-rich and oxygen/hydrogen-rich environments. In this work, the corrosion resistance of aluminum alloy bipolar plates modified in the cathodic environment of PEMFCs has been investigated. A honeycomb structure is constructed by anodizing on an aluminum alloy (AA5052) bipolar plate, and a polyacrylonitrile (PAN) film is prepared by infusing PAN solution on the surface. From scanning electron microscopy and atomic force microscopy, we observe that the porous structure of the aluminum alloy surface is more advantageous for enhancing the mechanical engagement between PAN and the aluminum alloy. Therefore, the PAN film is dense and smooth. Electrochemical tests confirm that the PAN film greatly improves the corrosion resistance of the aluminum alloy bipolar plate under the cathodic environment of the PEMFC. When graphene oxide (GO) is added, the charge-transfer resistance ( R ct ) is not only improved but also the stability under oxygen-rich acidic conditions is prolonged.

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“…[19,20] Subsequently, an annealing process was applied at 750°C under H 2 / Ar atmosphere. During this process, the organic PEI was removed, [39,40] the MoS 4 2À anions were directly in situ converted to MoS 2 and the GO was reduced to GR, creating the MoS 2 /GR heterostructure with alternately stacked architecture. MoS 2 /GR composite was also synthesized with the unmodified GO, under otherwise identical conditions.…”

Section: Resultsmentioning

confidence: 99%

Chemical Mass Production of MoS₂/Graphene van der Waals Heterostructure as a High‐Performance Li‐ion Intercalation Host

et al. 2019

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Two‐dimensional (2D) heterostructured materials, combining the desired advantages of individual 2D materials and eliminating the associated shortcomings, have inspired great interest in electrochemical energy storage applications. But searching a highly efficient and practical method for preparing 2D heterostructures as electrode materials is still challenging. Herein, a 2D MoS2/graphene (GR) heterostructure is synthesized through a facile and accessible self‐assembly method, which includes adsorbing ammonium thiomolybdate onto graphene oxide (GO) surface via electrostatic attraction and subsequently annealing the precursor to heterostructure. A high loading amount (86.2 %) of unilaminar MoS2 nanosheets lie on the GR sheets forming a face‐to‐face structure, and the MoS2 nanosheets exhibit a largely expanded interlayer spacing (1.0–1.2 nm) resulting from the alternately stacked structure during self‐assembly process. As a Li‐ion intercalation host, this unique MoS2/GR heterostructure exhibits pseudocapacitance‐dominated characteristics with superior kinetic performances and extremely high structural stability. These characteristics afford MoS2/GR heterostructure remarkable rate capability (155.6 mAh g−1 at 4 A g−1; 119.3 mAh g−1 at 16 A g−1) and a durable reversible capacity (over 5000 cycles). This method is suitable for mass production of MoS2/GR heterostructure and paves a way for utilizing 2D heterostructured materials in Li‐ion or other metal ion batteries.

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A polyethyleneimine-grafted graphene oxide hybrid nanomaterial: Synthesis and anti-corrosion applications

Cited by 132 publications

References 42 publications

Tribological and anti-corrosion performance of epoxy resin composite coatings reinforced with differently sized cubic boron nitride (CBN) particles

Tribological and anti-corrosion performance of epoxy resin composite coatings reinforced with differently sized cubic boron nitride (CBN) particles

Polyacrylonitrile Infused in a Modified Honeycomb Aluminum Alloy Bipolar Plate and Its Acid Corrosion Resistance

Chemical Mass Production of MoS₂/Graphene van der Waals Heterostructure as a High‐Performance Li‐ion Intercalation Host

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A polyethyleneimine-grafted graphene oxide hybrid nanomaterial: Synthesis and anti-corrosion applications

Cited by 132 publications

References 42 publications

Tribological and anti-corrosion performance of epoxy resin composite coatings reinforced with differently sized cubic boron nitride (CBN) particles

Tribological and anti-corrosion performance of epoxy resin composite coatings reinforced with differently sized cubic boron nitride (CBN) particles

Polyacrylonitrile Infused in a Modified Honeycomb Aluminum Alloy Bipolar Plate and Its Acid Corrosion Resistance

Chemical Mass Production of MoS2/Graphene van der Waals Heterostructure as a High‐Performance Li‐ion Intercalation Host

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Chemical Mass Production of MoS₂/Graphene van der Waals Heterostructure as a High‐Performance Li‐ion Intercalation Host