Room temperature anodic deposition and shape control of one-dimensional nanostructured zinc oxide

Sreekantan, Srimala; Gee, Lee Ren; Lockman, Zainovia

doi:10.1016/j.jallcom.2008.09.044

Cited by 38 publications

(32 citation statements)

References 25 publications

(33 reference statements)

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“…Based on potentiodynamic measurement, TEM images, Raman spectra, XRD patterns and the literature [21], we proposed the mechanism of ZnO growth in two different anodic potentials as shown in Fig. 7.…”

Section: Chemical Composition Morphology and Structure Of Zno Nanostmentioning

confidence: 99%

“…This indicated that anodized ZnO nanoparticles is prone to incorporate a notable degree of oxygen vacancies and interstitial Zn defects [20]. Sreekantan et al [21] found that the anodized ZnO nanoneedles had a higher intensity of UV emission via photoluminescence measurement and indicated the crystallinity of ZnO nanoneedles is better than other ZnO nanostructures. Shrestha et al [13] found that the nanotubular ZnO architectures annealed at 375 • C for 1 h exhibited a better PEC performance of 1.70 mA/cm 2 at −0.14 V vs. Ag/AgCl in a sacrificial sulfide solution containing 0.24 M Na 2 S and 0.…”

Section: Introductionmentioning

confidence: 99%

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Anodized ZnO nanostructures for photoelectrochemical water splitting

Huang

Wang

et al. 2016

Applied Surface Science

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Section: Chemical Composition Morphology and Structure Of Zno Nanostmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anodized ZnO nanostructures for photoelectrochemical water splitting

Huang

Wang

et al. 2016

Applied Surface Science

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“…In addition, 1D nanoscale ZnO is preferred in photoanode applications due to its larger surface area [7].…”

Section: Introductionmentioning

confidence: 99%

“…Anodization of Znthat is one of the valve metals especially synthesis of 1D nanoscale of ZnO by anodizing has been widely investigated, since its gentle conditions and cheap equipment. S. Sreekantan et al [7] have reported that nanoneedle, nanoflower and nanoflake of ZnO can be obtained by anodization in different concentration of sodium hydroxide. Apiked ZnO nanowire structures [15] are achieved by changing the NH 4 F concentration.…”

Section: Introductionmentioning

confidence: 99%

“…Keywords: Zinc oxide nanoparticles, discal morphology, preparation conditions, photocatalytic reduction 1Introduction Zinc oxide has drawn considerable attention because of its attractive optical-electrical characteristics [1,2] that make it potentially applicable in a lot of fields such as ultraviolet lasing [3], photocatalysts [4]and so on [5,6]. In addition, 1D nanoscale ZnO is preferred in photoanode applications due to its larger surface area [7].Anodic oxidation has been employed in synthesis of many kinds of metal oxides with 1D nanostructure [8~10]. Research on anodization of various valve metals by P. Schmuki group [11~14] showed that anodizing can be applied to the preparation of nanostructures of other valve metals.…”

mentioning

confidence: 99%

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Fabrication of ZnO Nanoparticles for Photocatalytic Reduction of CO₂

Chen

Liu

et al. 2016

MATEC Web Conf.

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Abstract. ZnO nanoparticles were fabricated by anodization method. Different fabrication conditions, including pH buffers (sodium hydroxide, citric acid, oxalic acid, hydrogen peroxide), electrolyte concentration, temperature and voltage were investigated. The field emission scanning electron microscopes (FESEMs) revealed that zinc oxide nanoparticles with discal morphology were formed. The optimum conditions for fabrication of nano ZnO material with discal shape nanoparticles are 1wt% NH 4 F electrolyte in water ethano(1:1) solution at 25 o C and 40v with 0.2M citric acid as pH buffer. This ZnO material shows rather high photocatalytic reduction activity of CO 2 and the yield of CH 4 reaches 2.48 umol/g catalyst. Keywords: Zinc oxide nanoparticles, discal morphology, preparation conditions, photocatalytic reduction 1Introduction Zinc oxide has drawn considerable attention because of its attractive optical-electrical characteristics [1,2] that make it potentially applicable in a lot of fields such as ultraviolet lasing [3], photocatalysts [4]and so on [5,6]. In addition, 1D nanoscale ZnO is preferred in photoanode applications due to its larger surface area [7].Anodic oxidation has been employed in synthesis of many kinds of metal oxides with 1D nanostructure [8~10]. Research on anodization of various valve metals by P. Schmuki group [11~14] showed that anodizing can be applied to the preparation of nanostructures of other valve metals. Anodization of Znthat is one of the valve metals especially synthesis of 1D nanoscale of ZnO by anodizing has been widely investigated, since its gentle conditions and cheap equipment. S. Sreekantan et al. [7] have reported that nanoneedle, nanoflower and nanoflake of ZnO can be obtained by anodization in different concentration of sodium hydroxide. Apiked ZnO nanowire structures [15] are achieved by changing the NH 4 F concentration. Studies on the preparation of ZnO strips have been conducted by Sung Joong Kim et al [16].Although many researches have concentrated on 1D nanoscale ZnO, research of various nanostructures in this field is still at primary stage. Hence, the new morphology and application of ZnO nanoparticle is yet to be further found. The key to nanostructure of ZnO

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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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Room temperature anodic deposition and shape control of one-dimensional nanostructured zinc oxide

Cited by 38 publications

References 25 publications

Anodized ZnO nanostructures for photoelectrochemical water splitting

Anodized ZnO nanostructures for photoelectrochemical water splitting

Fabrication of ZnO Nanoparticles for Photocatalytic Reduction of CO₂

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

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Room temperature anodic deposition and shape control of one-dimensional nanostructured zinc oxide

Cited by 38 publications

References 25 publications

Anodized ZnO nanostructures for photoelectrochemical water splitting

Anodized ZnO nanostructures for photoelectrochemical water splitting

Fabrication of ZnO Nanoparticles for Photocatalytic Reduction of CO2

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

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Fabrication of ZnO Nanoparticles for Photocatalytic Reduction of CO₂