Modern Electrochemistry 2A

doi:10.1007/b113922

Cited by 8 publications

(7 citation statements)

References 12 publications

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“…The charge of the BSA molecule is influenced by the pH of the medium. Since BSA possesses an isoelectric point at a pH of 4.7, it will present a positive charge at the pH used in this work. Then, the adsorption of BSA is favorable at more negative polarization potentials than the observed PZC for the Au/BSA interface.…”

Section: Resultssupporting

confidence: 64%

Adsorption and Interaction of Bovine Serum Albumin and Pluronic P103 Triblock Copolymer on a Gold Electrode: Double-Layer Capacitance Measurements

et al. 2020

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The interactions of proteins and other molecules and their adsorption onto substrates is a fascinating topic that has been applied to surface technologies, biosensors, corrosion studies, biotechnologies, and other fields. The success of these applications requires a previous characterization using some analytical techniques that, ordinarily, are not electrochemical. This work proposes analyzing the variation of the double-layer capacitance obtained through impedance electrochemical spectroscopy as an alternative strategy to show evidence of the interactions between proteins and triblock copolymers. The proposal is supported through the study of the interaction and adsorption of bovine serum albumin (BSA) and a commercial triblock copolymer (P103) in phosphate buffer on a gold electrode. The double-layer capacitance and the apparent interface thickness vs polarization potential curves as well as the potential of zero charge for pure P103 (0.6 wt %, corresponding to 6 g L –1 ), pure BSA (3 mg mL –1 ), and P103-BSA solutions (0.6 wt % and 3 mg mL –1 , respectively) are sensitive enough to show not only the interaction and the adsorption of the species but also the polarization potential where these interactions are taking place. A qualitative and quantitative analysis concerning the double-layer capacitance behavior is given. The significance and impact of this work is also presented.

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Section: Resultssupporting

confidence: 64%

Adsorption and Interaction of Bovine Serum Albumin and Pluronic P103 Triblock Copolymer on a Gold Electrode: Double-Layer Capacitance Measurements

et al. 2020

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“…For the FCC crystal lattice of Cu, the values of surface energy of crystal planes follow the trend: γ 111 < γ 100 < γ 311 < γ 110 [48,49]. As a result of different surface energy values, rate of electrodeposition is different on crystal planes, following the opposite trend from that for surface energy values [50]. The (100), (110) and (311) crystal planes are situated to the group of fast-growing planes, while the (111) plane belongs to the group of slow-growing crystal planes [51].…”

Section: Discussionmentioning

confidence: 94%

Morphology, Structure and Mechanical Properties of Copper Coatings Electrodeposited by Pulsating Current (PC) Regime on Si(111)

Mladenović

Lamovec

Radović

et al. 2020

Metals

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Copper electrodeposition on (111)-oriented Si substrate was performed by the pulsating current (PC) regime at various average current densities in the range of 15-70 mA·cm −2 , obtained by varying either the frequency (30, 50, 80 and 100 Hz for the current density amplitude of 100 mA·cm −2 ) or the current density amplitude (120 and 140 mA·cm −2 at 100 Hz). The produced Cu coatings were examined by SEM, AFM and XRD techniques. The morphology of the coatings changed from those with large grains to fine-grained and globular, while the crystal structure changed from the strong (220) to the strong (111) preferred orientation by increasing the average current density. The mechanical characteristics of coatings were examined using Vickers micro-indentation tests, applying the Chicot-Lesage (C-L) composite hardness model for the analysis of microhardness. The maximum microhardness was obtained for the Cu coating produced at an average current density of 50 mA·cm −2 , with a current density amplitude of 100 mA·cm −2 and a frequency of 100 Hz. This copper coating was fine-grained and showed the smallest roughness in relation to the other coatings, and it was obtained in the mixed activation-diffusion control between the end of the effect of the activation control and the beginning of the dominant effect of diffusion control.

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“…It has been shown that a carbon steel surface subjected to CO 2 corrosion possess a positive charge . When the surface bears an opposite charge to the ionic molecules, adsorption tends to be maximized. , …”

Section: Resultsmentioning

confidence: 99%

Development of a Zwitterionic Compound Derived from β-Amino Acid as a Green Inhibitor for CO₂Corrosive Environments

Ramírez-Estrada

Mena‐Cervantes

Elizalde

et al. 2017

ACS Sustainable Chem. Eng.

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Herein, the synthesis of three zwitterionic compounds (GZC-8, GZC-12, and GZC-18) derived from β-amino acids was carried out in good yield (>97%) through an ecofriendly, zero-waste synthesis procedure, starting from alkylamines (octylamine, dodecylamine, octadecylamine) and acrylic acid, under solventless conditions at ambient pressure and temperature. These compounds were characterized by Fourier transform infrared, two-dimensional nuclear magnetic resonance, electrospray ionization mass spectrometry, and elemental analyses and then evaluated as potential corrosion inhibitors for CO2 acidic environments characteristic of enhanced oil recovery (EOR) processes of the petroleum industry through electrochemical techniques such as open circuit potential (OCP), lineal polarization resistance (LRP), electrochemical impedance spectroscopy (EIS) at different immersion times, and potentiodynamic polarization after 24 h of immersion. From experimental measurements, inhibition efficiencies of 60, 89, and 90% were obtained for GZC-8, GZC-12, and GZC-18, respectively at a concentration of 25 ppm. In addition, acute toxicity of GZCs was evaluated on Photobacterium phosphoreum (Vibrio fischeri) by Microtox testing from which an EC50 value of 209, 188, and 43 ppm was obtained for GZC-8, GZC-12, and GZC-18, respectively, i.e., 2 orders of magnitude lower than typical ionic liquid inhibitors. From experimental results, it was found that the GZC-12 compound presented an adequate balance between inhibition efficiency and toxicity with maximum efficiency of 98.9% at a concentration of 75 ppm. Accordingly, GZC-12 can be classified as well-suited to human health and the environment and thus as a greener production alternative for oil and gas industry operations.

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Modern Electrochemistry 2A

Cited by 8 publications

References 12 publications

Adsorption and Interaction of Bovine Serum Albumin and Pluronic P103 Triblock Copolymer on a Gold Electrode: Double-Layer Capacitance Measurements

Adsorption and Interaction of Bovine Serum Albumin and Pluronic P103 Triblock Copolymer on a Gold Electrode: Double-Layer Capacitance Measurements

Morphology, Structure and Mechanical Properties of Copper Coatings Electrodeposited by Pulsating Current (PC) Regime on Si(111)

Development of a Zwitterionic Compound Derived from β-Amino Acid as a Green Inhibitor for CO₂Corrosive Environments

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Modern Electrochemistry 2A

Cited by 8 publications

References 12 publications

Adsorption and Interaction of Bovine Serum Albumin and Pluronic P103 Triblock Copolymer on a Gold Electrode: Double-Layer Capacitance Measurements

Adsorption and Interaction of Bovine Serum Albumin and Pluronic P103 Triblock Copolymer on a Gold Electrode: Double-Layer Capacitance Measurements

Morphology, Structure and Mechanical Properties of Copper Coatings Electrodeposited by Pulsating Current (PC) Regime on Si(111)

Development of a Zwitterionic Compound Derived from β-Amino Acid as a Green Inhibitor for CO2Corrosive Environments

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Development of a Zwitterionic Compound Derived from β-Amino Acid as a Green Inhibitor for CO₂Corrosive Environments