Study of various aliphatic alcohols as sacrificial agents on photoelectrochemical behavior of nickel-platinum-modified Cr-TiO2 nanotubes

Cr-TiO 2 nanotubes (Cr-TNTs) have been synthesized via facile one step anodization, followed by co-deposition by nickel-platinum via electroless deposition method. Field-emission scanning electron microscopy (FE-SEM), x-ray diffraction (XRD), and Raman spectroscopy have then been used to characteriz...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2018-10, Vol.22 (10), p.3137-3146
Main Authors: Momeni, Mohamad Mohsen, Ghayeb, Yousef, Moosavi, Negin
Format: Article
Language:English
Subjects:
Alcohol
Aliphatic alcohols
Aliphatic compounds
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Cobalt
Codeposition
Condensed Matter Physics
Diffuse reflectance spectroscopy
Electrochemistry
Electroless deposition
Electroless nickel plating
Energy Storage
Ethanol
Ethylene glycol
Methanol
Morphology
Nanotubes
Optical properties
Original Paper
Photoelectric effect
Photoelectric emission
Photoelectrochemical devices
Physical Chemistry
Platinum
Scanning electron microscopy
Spectrum analysis
Titanium dioxide
Ultraviolet reflection
Water splitting
X-ray diffraction
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Summary:Cr-TiO 2 nanotubes (Cr-TNTs) have been synthesized via facile one step anodization, followed by co-deposition by nickel-platinum via electroless deposition method. Field-emission scanning electron microscopy (FE-SEM), x-ray diffraction (XRD), and Raman spectroscopy have then been used to characterize the surface morphology and structure of the synthetic samples. The optical properties of the compounds have been investigated by ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy. Linear sweep voltammetry (LSV) and chronoamperometry were used to study the photoelectrochemical behavior of the obtained samples. The best electrochemical performer sample ( t 20 ) was recognized and evaluated in the presence of various aliphatic alcohols, as sacrificial agents, in photoelectrochemical cells (PEC) water splitting. In terms of sacrificial agent used, photocurrent density production was as follows: methanol > ethanol > glycerol > n-propanol > isopropanol > ethylene glycol. Also methanol concentration was optimized. Thus, both co-deposition of Cr-TNTs and addition of scavengers are promising methods to enhance the performance of catalysts for PEC.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-018-4022-z