ArticleNanomaterials (Basel, Switzerland)2017
Improving Visible Light-Absorptivity and Photoelectric Conversion Efficiency of a TiO₂ Nanotube Anode Film by Sensitization with Bi₂O₃ Nanoparticles.
Article in Nanomaterials (Basel, Switzerland), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Micro-Area Ferroelectric, Piezoelectric and Conductive Properties of Single BiFeO₃ Nanowire by Scanning Probe Microscopy.Nanomaterials (Basel, Switzerland) · 2019Article
- Sensitive and Selective Detection of Tartrazine Based on TiO₂-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes.Sensors (Basel, Switzerland) · 2018Article
- Facet-Dependent Cuprous Oxide Nanocrystals Decorated with Graphene as Durable Photocatalysts under Visible Light.Nanomaterials (Basel, Switzerland) · 2018Article
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Authors and funding
6 authors.
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Abstract
This study presents a novel visible light-active TiO₂ nanotube anode film by sensitization with Bi₂O₃ nanoparticles. The uniform incorporation of Bi₂O₃ contributes to largely enhancing the solar light absorption and photoelectric conversion efficiency of TiO₂ nanotubes. Due to the energy level difference between Bi₂O₃ and TiO₂, the built-in electric field is suggested to be formed in the Bi₂O₃ sensitized TiO₂ hybrid, which effectively separates the photo-generated electron-hole pairs and hence improves the photocatalytic activity. It is also found that the photoelectric conversion efficiency of Bi₂O₃ sensitized TiO₂ nanotubes is not in direct proportion with the content of the sensitizer, Bi₂O₃, which should be carefully controlled to realize excellent photoelectrical properties. With a narrower energy band gap relative to TiO₂, the sensitizer Bi₂O₃ can efficiently harvest the solar energy to generate electrons and holes, while TiO₂ collects and transports the charge carriers. The new-type visible light-sensitive photocatalyst presented in this paper will shed light on sensitizing many other wide-band-gap semiconductors for improving solar photocatalysis, and on understanding the visible light-driven photocatalysis through narrow-band-gap semiconductor coupling.
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