Corrosion Protection of Monel Alloy Coated with Graphene Quantum Dots Starts with a Surge

Bopp, C.D.; Santhanam, K. S. V.

doi:10.3390/chemengineering3040080

Cited by 6 publications

(4 citation statements)

References 31 publications

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“…The peak of 1558–1629 cm –1 was attributed to stretching vibration of CC and CO, and the 1350–1430 cm –1 peak was assigned to C–N stretching vibration and C–H bending vibration . In addition, the Ni–O–H stretching vibration peak appears at 580 cm –1 . There were abundant O-containing functional groups on various carbon supports, which provided active sites for catalytic pyrolysis to promote the reaction process …”

Section: Resultsmentioning

confidence: 99%

Catalytic Activity and Reusability of Nickel-Based Catalysts with Different Biochar Supports during Copyrolysis of Biomass and Plastic

Luo

Dong

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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Low-cost biochar is a promising catalyst support for catalytic pyrolysis to produce pyrolysis oil, pyrolysis gas, and carbon nanomaterials (CNMs). The effect of different Ni/biochar (four kinds of original biochar and three kinds of modified biochar) catalysts on the yield and properties of copyrolysis products from Chinese herb residue and reused polypropylene (PP) was studied. Results show that the modified biochar support had a high surface area and high catalytic activity. Particularly, Ni/ZC (ZnCl2-modified biochar) obtained higher yields of CNMs (2.92 wt %) and pyrolysis gas (55.44 wt %). Moreover, it exhibited high stability in repeated use experiments. Interestingly, the Ni/ZC catalyst showed the highest catalytic activity during second reuse (ZC-R2) due to moderate precoking. The high content of hydrocarbons and the C6–C20 component in the ZC-R2 group is attributed to the stronger secondary cracking capacity. The stronger secondary cracking capacity of the front-end catalyst may increase the content of CH4 in pyrolysis gas. Therefore, the Ni/ZC catalyst significantly increased the yield of a high-quality 3D graphitic carbon network structure in a second-stage reactor. This work contributes to the industrial application of catalytic pyrolysis technology by reducing the catalyst cost and increasing the product value.

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Section: Resultsmentioning

confidence: 99%

Catalytic Activity and Reusability of Nickel-Based Catalysts with Different Biochar Supports during Copyrolysis of Biomass and Plastic

Luo

Dong

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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“…The potentiodynamic polarization of the Cu-Zn-GQD sample was carried out in a 0.1 M NaCl electrolyte, and Figure 7 gives the Tafel plot obtained on a Cu-Zn-GQD sample obtained by carrying out the deposition on a copper plate by passing 19 C for a duration of 1800 s. From the Tafel plot a corrosion potential of E corr = −0.16 V and i corr = 0.95 µA/cm 2 were obtained. Previously [96][97][98][99][100][101][102] the corrosion of brass has been examined in different media with a view to reduce the corrosion by inhibitors. Kilinccer and Erbil [98] obtained corrosion rates of 405 mA/cm 2 by polarization studies for 67% Cu and 33% Zn in 0.1 M Na 2 SO 4 and a reduced value of 365 mA/cm 2 in phosphate-containing electrolyte.…”

Section: Tafel Measurementsmentioning

confidence: 99%

Electrodeposition from a Graphene Bath: A Sustainable Copper Composite Alloy in a Graphene Matrix

Richardson

Bopp

et al. 2020

J. Compos. Sci.

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The leaching effect of metals has led to the introduction of government regulations for the safety of the environment and humans. This has led to the search for new alloys with long-lasting sustainability. Herein, we wish to report a new brass alloy containing carbon with a remarkable sustainability produced by electrodeposition from a graphene quantum dots bath. The electrochemical measurements were carried out using cyclic voltammetry, potentiodynamic analysis, and Tafel measurements, and the deposits were characterized by X-ray fluorescence spectroscopy (XRF), Raman imaging, X-ray diffraction (XRD), atomic force microscopy (AFM), and scanning electron microscopy (SEM) to understand the surface morphology and elemental compositions. The current–time transients in the potential-step electrolysis were used to investigate the nucleation and growth mechanism. The smooth and compact deposit obtained at −0.60 V showed a composition of Cu = 24.33 wt %; Zn = 0.089 wt %; and C = 75.57 wt %. The SEM and energy dispersion X-ray analysis revealed a surface morphology with a uniform distribution of the particles and the presence of Cu, Zn, and C. The corrosion density of the material is very much lower than that of conventional brass, suggesting a higher sustainability.

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“…Introduce functional materials or additives to protect the metal substrate through cathodic protection, blocking effects, or passivation effects. An active metal powder or corrosion inhibitor can be introduced to prevent the corrosion of the substrate metal through electrochemical principles, or through the introduction of graphene, polyaniline, and other conductive materials for corrosion protection [15][16][17]. 4.…”

Section: Introductionmentioning

confidence: 99%

A Review of Recent Modification, Optimization, and Functionalization Methods for Organic Anticorrosive Coatings

Zhang,

Feng,

Zhang

et al. 2023

Coatings

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Corrosion problems are widespread in nature. As one of the most convenient and efficient methods for metal anticorrosion protection, anticorrosive coatings have received increasing attention. With the continuous advancement of science and technology, more novel functional anticorrosion coatings are being extensively researched. This review provides an overview of recent research progress in anticorrosion coatings and functionalized modified materials. Recent methods for performance optimization can be categorized into three main sections: modification by nanoparticles, modification by carbon-based materials, and specific functionalization (barrier effect, passivation, shielding effect, resistivity, self-repair). Through modification, the anticorrosion performance of coatings is significantly enhanced, with impedance levels improving by up to three orders of magnitude. Furthermore, modification imparts additional outstanding features to the coatings, such as high-temperature resistance, thermal conductivity, self-healing, and hydrophobicity. Finally, the future development trend of anticorrosion coatings is proposed, and several reasonable suggestions are put forward for the challenges faced.

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Corrosion Protection of Monel Alloy Coated with Graphene Quantum Dots Starts with a Surge

Cited by 6 publications

References 31 publications

Catalytic Activity and Reusability of Nickel-Based Catalysts with Different Biochar Supports during Copyrolysis of Biomass and Plastic

Catalytic Activity and Reusability of Nickel-Based Catalysts with Different Biochar Supports during Copyrolysis of Biomass and Plastic

Electrodeposition from a Graphene Bath: A Sustainable Copper Composite Alloy in a Graphene Matrix

A Review of Recent Modification, Optimization, and Functionalization Methods for Organic Anticorrosive Coatings

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