Journal
MATERIALS RESEARCH BULLETIN
Volume 104, Issue -, Pages 212-219Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2018.04.014
Keywords
Photocatalysis; Hydrogen production; TiO2; Nanostructures; Band gap engineering
Categories
Funding
- Nanomission, (DST)
- Jain University
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Yttrium doped TiO2 (Y:Tio(2)) nanoparticles (NPs) and nanorods (NRs) are synthesized using facile wet chemical methods. Interestingly, the doped Y ions are found to be oxo-bridged with the host TiO2 through Y-O-Ti like formation as confirmed from their XRD and XPS studies. The photocatalytic hydrogen production efficiency of the synthesized nanostructures was studied under UV and visible light irradiations. The NPs of Y:TiO2 showed increased activity as compared to NRs. The observed efficiency of NPs is attributed to their three-dimensional confinement, where it facilitated a stronger oxo-bridging formation that improved the metal-to-metal charge transfer process, reducing the band gap and surface energies as compared to NRs. As investigated in this study, the oxo-bridging formation in the doped metal-oxide systems is relatively promising as this configuration largely favors the photocatalytic process by re-designing the charge separation and transfer processes as compare to the other conventional systems.
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