Molecular structures in the inorganic-metal interactions for optimizing electrochemical performance

Zoubi, Wail Al; Putri, Rosy Amalia Kurnia; Sunghun, Baeki; Ko, Young Gun

doi:10.1016/j.molliq.2021.115344

Cited by 5 publications

(5 citation statements)

References 46 publications

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“…The estimated values from the fitting processes are 345.07 mg/g (293 K), 359.6 mg/g (303 K), and 391.37 mg/g (313 K) (Figure B; Table ). This behavior suggests the considerable impact of the temperature on the activation of new adsorption sites or new energetic site groups. , This phenomenon occurs because an increase in the temperature decreases the viscosity of the dye solution and increases the diffusion rate and mobility of the dye within the pores of the geopolymer matrix, allowing complete contact with the additional active sites. Additionally, the high-temperature conditions improve the ion exchange properties of the geopolymer structure, the chemisorption reaction, and the formation of chemical bonds.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Congo Red Adsorption and Photo-Fenton Oxidation over an Iron-Impeded Geopolymer from Ferruginous Kaolinite: Steric, Energetic, Oxidation, and Synergetic Studies

et al. 2022

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An iron-impeded geopolymer (Fe/GP) was synthesized from natural ferruginous kaolinite and optical waste for enhanced decontamination of Congo red (CR) dye. The adsorption properties of Fe/GP were assessed using an advanced monolayer equilibrium model of one energy ( R 2 > 0.99). Fe/GP possessed an active site density of 391.3 mg/g, which induced an adsorption capacity of 634 mg/g at the saturation state. The number of adsorbed CR molecules per site ( n = 1.56–1.62) reflected the possible uptake of two molecules per site via a multimolecular mechanism. The adsorption energy (5.12–5.7 kJ/mol) reflected the physical adsorption of the CR molecules via hydrogen bonding and/or van der Waals forces. As a catalyst, notable activity toward photo-Fenton oxidation was achieved even at high CR concentrations. Complete oxidation was observed after 30 (CR concentration: 10 mg/L), 50 (20 mg/L), 80 (30 mg/L), 120 (40 mg/L), and 140 min (50 mg/L). High oxidation efficiency was achieved using 0.1 g/L Fe/GP, 0.1 mL of hydrogen peroxide (H 2 O 2 ), and a visible light source. Increasing the Fe/GP dosage to 0.3 g/L resulted in complete oxidation of CR (100 mg/L) after 220 min. Therefore, synthetic Fe/GP can be used as a low-cost and superior catalyst and adsorbent for the removal of CR-based contaminants via adsorption or advanced oxidation processes.

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Section: Resultsmentioning

confidence: 99%

Enhanced Congo Red Adsorption and Photo-Fenton Oxidation over an Iron-Impeded Geopolymer from Ferruginous Kaolinite: Steric, Energetic, Oxidation, and Synergetic Studies

et al. 2022

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“…For example, micro-arc oxidation was also used to fabricate protective metal oxide layers on the surface of valve metals and alloys which displays good adherence to the substrate with high hardness, high resistance to corrosion and wear. [59,60] However, the electrolyte/substrate interface plasma discharge will result in microdefects and a porous surface, reducing corrosion resistance and failing to provide long-term corrosion protection. [61] The leakage of metallic ions could result in contaminating the bloodstream and cause undesired side effects to implantation.…”

Section: Several Approaches In Surface Treatmentmentioning

confidence: 99%

Unravelling Surface Modification Strategies for Preventing Medical Device‐Induced Thrombosis

Luu,

Nguyen,

2023

Adv Healthcare Materials

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The use of biomaterials in implanted medical devices remains hampered by platelet adhesion and blood coagulation. Thrombus formation is a prevalent cause of failure of these blood‐contacting devices. Although systemic anticoagulant can be used to support materials and devices with poor blood compatibility, its negative effects such as an increased chance of bleeding, make materials with superior hemocompatibility extremely attractive, especially for long‐term applications. This review examines blood–surface interactions, the pathogenesis of clotting on blood‐contacting medical devices, popular surface modification techniques, mechanisms of action of anticoagulant coatings, and discusses future directions in biomaterial research for preventing thrombosis. In addition, this paper comprehensively reviews several novel methods that either entirely prevent interaction between material surfaces and blood components or regulate the reaction of the coagulation cascade, thrombocytes, and leukocytes.This article is protected by copyright. All rights reserved

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“…Zoubi et al [20] applied an advanced surface modification method, i.e., low temperature-interfacial plasma electrolysis (LT-PE) that results in plasma-assisted electrochemical reaction (PAE) on the metal surface. This represents one of the most versatile wet-coating systems used to achieve a surface of significant corrosion resistance of metallic materials.…”

Section: Magnesiummentioning

confidence: 99%

“…In 1985, Abdel Aal and Wahdan [12] studied purine as an inhibitor of corrosion of steel in HClO 4 solution. Until now, they have been tested as corrosion inhibitors for numerous metals and alloys such as steel [13,14], aluminum [15,16], tin, indium, both pure and in the form of alloys [17,18], titanium [19], Mg alloys [20,21], copper [22][23][24][25], brass [26], nickel [27], and alloys such as Sn-Ag alloy [28] and CoCrMo alloy [29]. Purine compounds exhibit an inhibiting effect toward metal corrosion in various aqueous media but also in hydrocarbon media such as highly refined naphthenic mineral base oil [30].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Analysis of the Influence of Purines on Copper, Steel and Some Other Metals Corrosion

Mihajlović¹,

Tasić²,

Radovanović³

et al. 2022

Metals

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Metals stability and corrosion resistance are very important factors that influence the possibility of their applications. In order to study and foresee the behavior of metals during various applications in all kinds of conditions and media, numerous approaches and techniques are developed and applied. Among those techniques, electrochemical measurements nowadays have a dominant role since they are proved to be highly efficient, reliable, fast, relatively low-cost, and easy regarding the preparation and execution of measurements. Besides that, they also provide quite a good amount of data regarding the effect and the mechanism of the reactions that metals interact in. Metals corrosion is reduced by various methods, one of the most frequently used ones is the application of corrosion inhibitors. Usually, organic compounds are studied as potential corrosion inhibitors, and at the moment the focus is on the effect on the environment. Hence, environmentally friendly and non-toxic inhibitors are important research topics. Purines, since they are the group of bioorganic compounds found in numerous biochemical structures such as DNA and RNA, present a very interesting possible solution and are studied as inhibitors of corrosion for copper, steel, aluminum, etc., as well as for some metal alloys. Data obtained and available up until the present are presented and discussed in this review.

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Molecular structures in the inorganic-metal interactions for optimizing electrochemical performance

Cited by 5 publications

References 46 publications

Enhanced Congo Red Adsorption and Photo-Fenton Oxidation over an Iron-Impeded Geopolymer from Ferruginous Kaolinite: Steric, Energetic, Oxidation, and Synergetic Studies

Enhanced Congo Red Adsorption and Photo-Fenton Oxidation over an Iron-Impeded Geopolymer from Ferruginous Kaolinite: Steric, Energetic, Oxidation, and Synergetic Studies

Unravelling Surface Modification Strategies for Preventing Medical Device‐Induced Thrombosis

Electrochemical Analysis of the Influence of Purines on Copper, Steel and Some Other Metals Corrosion

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