NDLI: Ni/Si-Codoped TiO<sub>2</sub> Nanostructure Photoanode for Enhanced Photoelectrochemical Water Splitting.

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Ni/Si-Codoped TiO₂ Nanostructure Photoanode for Enhanced Photoelectrochemical Water Splitting.

Content Provider	Europe PMC
Author	Li, Ting Ding, Dongyan
Copyright Year	2019
Abstract	We synthesized Ni/Si-codoped TiO₂ nanostructures for photoelectrochemical (PEC) water splitting, by electrochemical anodization of Ti-1Ni-5Si alloy foils in ethylene glycol/glycerol solutions containing a small amount of water. The effects of annealing temperature on PEC properties of Ni/Si-codoped TiO₂ photoanode were investigated. We found that the Ni/Si-codoped TiO₂ photoanode annealed at 700 °C had an anatase-rutile mixed phase and exhibited the highest photocurrent density of 1.15 mA/cm² at 0 V (vs. Ag/AgCl), corresponding to a photoconversion efficiency of 0.70%, which was superior to Ni-doped and Si-doped TiO₂. This improvement in PEC water splitting could be attributed to the extended light absorption, faster charge transfer, possibly lower charge recombination, and longer lifetime.
Journal	Materials (Basel)
Volume Number	12
DOI	10.3390/ma12244102
PubMed Central reference number	PMC6947184
Issue Number	24
PubMed reference number	31817973
e-ISSN	19961944
Language	English
Publisher	Molecular Diversity Preservation International (MDPI)
Publisher Date	2019-12-08
Access Restriction	Open
Subject Keyword	anodization doped TiO2 nanostructures photoelectrochemical property
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science

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