Photoelectrocatalytic properties of BiVO4 prepared with different alcohol solvents

Francisco Wirley Paulino Ribeiro, Murilo Fernando Gromboni, Frank Marken, Lucia H. Mascaro

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

BiVO4 has been receiving attention for applications in photoelectrochemical devices. This paper describes the effect of different alcohol solvents (ethanol, ethylene-glycol, PEG300 and PEG 400) on the morphology, crystal growth, crystalline size, thickness, photophysical and photoelectrochemical properties of BiVO4 photoanodes prepared from a suitable, simple and inexpensive one-step process. All samples exhibited good crystallinity with the monoclinic phase dominating and with suitable bandgap for visible light harvesting; but the morphology, thickness, and resulting photocurrents varied broadly. The unmodified BiVO4 photoanode prepared with PEG 300, gave a particularly good photocurrent of 0.77 mA cm−2 at 1.23 V vs RHE under illumination of 100 mW cm−2. In this case, a higher value for the ratio between the intensities of the XRD peaks, (040)/(121), was verified, as well as smaller crystallite size. Considering the type of solvent, the BiVO4 photoanode prepared with PEG 300 exhibited a more intense photocurrent. The optimization of the solvent employed in the synthesis of the BiVO4 photoanode is a crucial step in the development of a photoelectrochemical device based on this material.

Original languageEnglish
Pages (from-to)17380-17389
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number39
DOIs
Publication statusPublished - 19 Oct 2016

Fingerprint

photoelectrochemical devices
Photocurrents
Polyethylene glycols
photocurrents
alcohols
Alcohols
Crystallite size
Ethylene glycol
Crystal growth
glycols
crystal growth
crystallinity
Energy gap
Ethanol
ethyl alcohol
ethylene
Lighting
illumination
Crystalline materials
optimization

Keywords

  • Alcohol solvent
  • BiVO
  • Crystal growth
  • Photoelectrocatalysis
  • Water splitting

Cite this

Photoelectrocatalytic properties of BiVO4 prepared with different alcohol solvents. / Ribeiro, Francisco Wirley Paulino; Gromboni, Murilo Fernando; Marken, Frank; Mascaro, Lucia H.

In: International Journal of Hydrogen Energy, Vol. 41, No. 39, 19.10.2016, p. 17380-17389.

Research output: Contribution to journalArticle

Ribeiro, Francisco Wirley Paulino ; Gromboni, Murilo Fernando ; Marken, Frank ; Mascaro, Lucia H. / Photoelectrocatalytic properties of BiVO4 prepared with different alcohol solvents. In: International Journal of Hydrogen Energy. 2016 ; Vol. 41, No. 39. pp. 17380-17389.
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