Electrochemical characterization of electrophoretically deposited hydroxyapatite/chitosan/graphene oxide composite coating on Mg substrate

Saadati, Ahmad; Khiarak, Behnam Nourmohammadi; Zahraei, Ayda Asaadi; Nourbakhsh, Aida; Mohammadzadeh, Hurieh

doi:10.1016/j.surfin.2021.101290

Cited by 19 publications

(16 citation statements)

References 70 publications

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“…To simulate, the resistance R S is considered for wiring and solution resistances, which is almost constant in all the samples. 42,43 The high-frequency part of the spectra is a depressed semicircle that is fitted with R ct ||CPE 1 . A constantphase element (CPE) is often used to show a nonideal capacitance.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Efficient Electrocatalytic Overall Water Splitting on a Copper-Rich Alloy: An Electrochemical Study

et al. 2022

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The development of active, durable, cost-effective, and stable electrocatalysts is an urgent need for various industrial fields including renewable energy systems. The state-of-the-art catalysts suffer from poor water splitting activity in alkaline media due to their sluggish kinetics, high cost, and scarcity on earth to be scaled up. Herein, we present an electrochemical analysis of a nanostructured electrocatalyst based on a face-centered cubic (FCC) copper-rich Cu–Ni–Fe–Cr–Co alloy with a quasi-spherical morphology electrodeposited on a highly porous nickel substrate. Electrochemical studies determine the enhanced electrocatalytic activity toward both hydrogen and oxygen reactions in an alkaline medium, which has been induced by the synergistic effect of alloy metals. It is shown that the performance of the presented electrocatalyst for both the oxygen evolution reaction and hydrogen evolution reaction is superior to the recently reported electrocatalysts for overall water splitting. Benefiting from its long-term durability, the material can pave the way to developing high-performance electrocatalysts for full electrochemical water splitting.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Efficient Electrocatalytic Overall Water Splitting on a Copper-Rich Alloy: An Electrochemical Study

et al. 2022

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“…After mechanical scratching, a controlled release of cerium ions from the CS nano-reservoirs validates the self-healing characteristic. Other chitosan/HA duplex coatings reported enhanced biocompatibility and corrosion resistance [ [313] , [314] , [315] ]. Collagen (Col) is one of the most abundant polymers present inside the organic matrix of dentin, bone, tendons, and ligaments in the human body [ 316 ].…”

Section: Coatings and Their Current Statusmentioning

confidence: 99%

Section: Coatings and Their Current Statusmentioning

confidence: 99%

Progress in bioactive surface coatings on biodegradable Mg alloys: A critical review towards clinical translation

Singh

Batra

Kumar

et al. 2023

Bioactive Materials

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“…Chitosan-based composites promote the attachment of cells, cell proliferation, and differentiation due to structural similarities between chitosan and extracellular matrix structures [9]. Although CS has low mechanical strength, CS-based composites have the potential to enhance physical and chemical properties [10,11]. Furthermore, in simulated inflammatory conditions, coatings containing CS have higher adhesion strength and corrosion protection; for example, a hydroxyapatite (HA)/CS composite presented higher level of protection and greater adhesive strength than pure HA [12,13].…”

Section: Introductionmentioning

confidence: 99%

Dual Synergistic Effects of MgO-GO Fillers on Degradation Behavior, Biocompatibility and Antibacterial Activities of Chitosan Coated Mg Alloy

et al. 2022

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The aim of this work was to establish and characterize chitosan/graphene oxide- magnesium oxide (CS/GO-MgO) nanocomposite coatings on biodegradable magnesium-zinc-cerium (Mg-Zn-Ce) alloy. In comparison to that of pure CS coatings, all composite coatings encapsulating GO-MgO had better adhesion strength to the Mg-Zn-Ce alloy substrate. The result depicted that the co-encapsulation of GO-MgO into the CS layer leads to diminish of contact angle value and hence escalates the hydrophilic characteristic of coated Mg alloy. The electrochemical test demonstrated that the CS/GO-MgO coatings significantly increased the corrosion resistance because of the synergistic effect of the GO and MgO inside the CS coating. The composite coating escalated cell viability and cell differentiation, according to cytocompatibility tests due to the presence of GO and MgO within the CS. The inclusion of GO-MgO in CS film, on the other hand, accelerates the formation of hydroxyapatite (HA) during 14 days immersion in SBF. Immersion results, including weight loss and hydrogen evolution tests, presented that CS/GO-MgO coating enables a considerably reduced degradation rate of Mg-Zn-Ce alloy when compared to the bare alloy. In terms of antibacterial-inhibition properties, the GO-MgO/CS coatings on Mg substrates showed antibacterial activity against Escherichia coli (E. coli), with a large inhibition area around the specimens, particularly for the coating containing a higher concentration of GO-MgO. Bacterial growth was not inhibited by the bare Mg alloy samples. The CS/GO-MgO composite coating is regarded as a great film to enhance the corrosion resistance, bioactivity, and antibacterial performance of Mg alloy implants.

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Electrochemical characterization of electrophoretically deposited hydroxyapatite/chitosan/graphene oxide composite coating on Mg substrate

Cited by 19 publications

References 70 publications

Efficient Electrocatalytic Overall Water Splitting on a Copper-Rich Alloy: An Electrochemical Study

Efficient Electrocatalytic Overall Water Splitting on a Copper-Rich Alloy: An Electrochemical Study

Progress in bioactive surface coatings on biodegradable Mg alloys: A critical review towards clinical translation

Dual Synergistic Effects of MgO-GO Fillers on Degradation Behavior, Biocompatibility and Antibacterial Activities of Chitosan Coated Mg Alloy

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