Controllable synthesis of nanostructured metal oxide and oxyhydroxide materials via electrochemical methods

Lawrence, Matthew; Kolodziej, Adam; Rodríguez, Paramaconi

doi:10.1016/j.coelec.2018.03.014

Cited by 35 publications

(26 citation statements)

References 84 publications

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“…Besides, the performance of the metal oxide-based sensor also depends on the thickness of the film and its operating temperature [4,5]. There are other advantages of using metal oxides as a sensing material such as low-cost preparation [3], high sensitivity, fast response and recovery time [4], and also controllable synthesis [6]. Generally 285 two kinds of metal oxide-based sensors that are always in use.…”

Section: Introductionmentioning

confidence: 99%

Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications

Parimon

Mamat

Ismail

et al. 2020

IJEECS

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Nickel oxide (NiO) nanosheet films were successfully grown onto NiO seed-coated glass substrates at different annealing temperatures for humidity sensing applications. NiO seed layers and NiO nanosheet films were prepared using a sol-gel spin coating and sonicated sol-gel immersion techniques, respectively. The properties of NiO nanosheet films at as-deposited, 300 ℃, and 500 ℃-annealed were examined by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), ultraviolet-visible (UV-vis) spectroscopy, and humidity sensor measurement system. The XRD patterns demonstrate that the grown NiO films have crystalline cubic structures at temperature of 300 ℃ and 500 ℃. The FESEM images show that the large porous nanosheet network spread over the layers as the annealing temperature increased. The UV-vis spectra revealed that all the nanosheet films have the average transmittance below than 50% in the visible region, with absorption edges ~ 350 nm. The optical band gap energy was evaluated in ranges of 3.39 to 3.61 eV. From the obtained humidity sensing results, it shows that 500 ℃-annealed film exhibited the best sensitivity of 257, as well as the slowest response time, and the fastest recovery time compared with others.

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Section: Introductionmentioning

confidence: 99%

Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications

Parimon

Mamat

Ismail

et al. 2020

IJEECS

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“…[1][2][3][4][5][6][7] To meet the ever-increasing energy demand, intensive efforts have been devoted to develop the titanium oxides with tunable compositions, morphologies and structures. [8][9][10][11] Understanding the properties of the materials as a function of the crystallographic structure and the phase transition amongst these polymorphs, e.g. the transformation of lepidocrocite-type TiO2 nanosheets into rutile or anatase is essential to establish protocols of synthesis of these materials and their subsequent applications.…”

Section: Introductionmentioning

confidence: 99%

Anomalous Phase Transition of Layered Lepidocrocite Titania Nanosheets to Anatase and Rutile

Chen

Sun

et al. 2019

Crystal Growth & Design

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In this study, phase transformations from lepidocrocite titania nanosheets (L-TiO2) to rutile (R-TiO2) and anatase (A-TiO2) have been systematically investigated as a function of the preparation conditions, such as pH and freeze drying, and as a function of the temperature treatment. We have found that the transformation of (L-TiO2) into rutile takes place upon freeze drying treatment. We report that temperature determined the final phase-structure in the transition phase of the L-TiO2 nanosheets into TiO2 nanoparticles, while the pH determined the final morphology and particle size. Based on the experimental results, two different transition pathways of dissolution-recrystallization and topologically rolling transition have been proposed. Our results give a full map of phase transition and morphology evolution of L-TiO2 to R-TiO2/A-TiO2 that can provide guideline to new materials design, especially for the photocatalysts.

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“…In contrast, electrochemical routes have been shown to greatly reduce the time taken to produce nanostructured titanate catalysts. [41][42] Electrodeposition is a one-pot technique that enables: (i) control over deposition thicknesses, (ii) direct deposition of the catalyst onto the conductive substrate, maximizing the electrical connection, (iii) ease of access to multicomponent, mixed metal oxide materials. [42][43][44] Unfortunately, control over the uniform morphology of the electrodeposits is lacking.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis of Nanostructured Metal-Doped Titanates and Investigation of Their Activity as Oxygen Evolution Photoanodes

Lawrence¹,

Celorrio

Shi

et al. 2018

ACS Appl. Energy Mater.

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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Controllable synthesis of nanostructured metal oxide and oxyhydroxide materials via electrochemical methods

Cited by 35 publications

References 84 publications

Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications

Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications

Anomalous Phase Transition of Layered Lepidocrocite Titania Nanosheets to Anatase and Rutile

Electrochemical Synthesis of Nanostructured Metal-Doped Titanates and Investigation of Their Activity as Oxygen Evolution Photoanodes

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