Anodic behavior of zinc in aqueous borate electrolytes

Lilov, E.; Lilova, Vanya; Girginov, Christian; Kozhukharov, S.; Nedev, S.; Tsanev, A.; Yancheva, Denitsa; Velinova, V.

doi:10.1016/j.matchemphys.2019.122081

Cited by 5 publications

(9 citation statements)

References 71 publications

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“…AZO layers preferably were synthesized in alkaline electrolytes. Zinc anodization in alkaline electrolyte has extensively studied [48,54–56] . The growth kinetic in alkaline media can be explained particularly well with the voltage‐current diagram in Figure 3.…”

Section: Types Of Zinc Anodizingmentioning

confidence: 69%

Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

et al. 2021

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Anodic zinc oxide (AZO) layers are attracting interdisciplinary research interest. Chemists, physicists and materials scientists are increasingly devoting attention to fundamental and application‐related research on these layers. Research work focuses on the application as semiconductor, corrosion protector, adhesion promoter, abrasion protector, or antibacterial surfaces. The structure and crystallinity essentially determine the properties of the AZO coatings. The type and concentration of the electrolyte, the applied current density or voltage as well as the duration time enable layer structures of structural variety. The article gives an overview of the different possibilities of anodic treatment, whereby the voltage and the current type are the main distinguishing criteria. Presented is the electrolytic oxidation (anodizing) and the electrolytic plasma oxidation (EPO). The electrolytic etching is also a process of anodic treatment. However, it does not produce AZO layers, but rather a degradation of the zinc layer. The review article shows the parameters used so far (electrolyte, current type, current density, voltage) and points out the influence on the formation of AZO structures in dependency to the used electrolyte.

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Section: Types Of Zinc Anodizingmentioning

confidence: 69%

Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

et al. 2021

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“…The specimens' surfaces were cleaned with 2% nital solution, followed by electropolishing for 20 min in an alcohol solution of orthophosphoric acid at 5 °C, following the procedure described in [17]. The plates were then washed with distilled water and subjected to a 3 h thermal treatment according to the procedure described in [18]. The catalyst was placed horizontally at a depth of 1 cm below the surface of the solution.…”

Section: Photocatalytic Activity Assessmentmentioning

confidence: 99%

“…A previous study [16], proposed a model explaining the N-shaped dependence of the photodecomposition reaction rate on the concentration of the pollutant. This model pertains to a photocatalyst in the form of a plate, positioned horizontally beneath the solution surface at a fixed depth (specifically, in the experimental setup, the photocatalyst was placed 1 cm beneath the solution surface, and the illumination rays were perpendicular to the catalyst surface).…”

Section: Kinetic Model Description For Thin Plate Photocatalysts Theo...mentioning

confidence: 99%

“…In such cases, the contribution of thermally excited charges must be considered as well. Detailed assessment of the number of charge carriers is based on experimental data published by other authors [19][20][21][22][23][24], and the corresponding approximations for calculations are presented in [16]. For these charges, the rate of contaminant degradation can be expressed by the following equation (equation ( 3)):…”

Section: Kinetic Model Description For Thin Plate Photocatalysts Theo...mentioning

confidence: 99%

“…However, according to this model, the photocatalytic reaction rate should be linearly dependent on the pollutant concentration. Nevertheless, this dependence can exhibit a maximum value [14,15] and even a more complex relationship [16].…”

Section: Introductionmentioning

confidence: 99%

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Depth dependence of the photocatalytic reaction rate. kinetic model generalization

et al. 2023

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Dependence of photocatalytic reaction rate on the depth of the solution in case of small depths was studied. To the best of our knowledge, there are no reports on depth dependence of the photocatalytic reaction rate in literature. The study of reaction rate on the solution depth can play an important role in the development of systems for photodecomposition of organic pollutants. The model for photodegradation with a modified rate constant, which was developed in our previous work was generalized for the application of the catalyst in both plate and powder form. The applicability of the model was proved on the methylene blue discoloration by ZnO photocatalyst powder and plates.

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Kinetics of photocatalytic degradation of organic compounds: a mini-review and new approach

Tran¹,

Nguyen

Phương³

et al. 2023

RSC Adv.

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Anodic behavior of zinc in aqueous borate electrolytes

Cited by 5 publications

References 71 publications

Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

Depth dependence of the photocatalytic reaction rate. kinetic model generalization

Kinetics of photocatalytic degradation of organic compounds: a mini-review and new approach

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