Enhanced photoelectrocatalytic performance of temperature-dependent 2D/1D BiOBr/TiO2-x nanotubes
- School of Environmental Science and Engineering, Tianjin University, 135 Yaguan Road, Tianjin 300350 (China)
- School of Chemical Engineering and Technology, Tianjin University, 135 Yaguan Road, Tianjin 300350 (China)
Highlights: • A p-n junction of 1D TiO{sub 2-x} nanotubes and 2D BiOBr nanosheets is prepared. • The quantity and dimension of BiOBr nanoplates has been well controlled. • The mechanism of the improved photoelectrocatalytic activities has been elaborated. - Abstract: A p-n junction with oxygen vacancy and excellent visible light response based on 1D TiO{sub 2-x} nanotubes and 2D BiOBr nanosheets was prepared successfully. BiOBr nanosheets are well distributed on the outer walls of TiO{sub 2-x} nanotubes by chemical bath deposition method. The fabricated intimately connected interfacial p-n junction between 2D BiOBr nanoplates and 1D TiO{sub 2-x} nanotubes offers an interfacial nanochannel, which can promote efficient interfacial charge migration and separation. The construct of TiO{sub 2-x} extends the photoresponse to visible light due to the introducing of oxygen vacancy. The B/T-80 °C exhibits excellent visible light photoelectrocatalytic activities and stable performance for Rhodamine B (λ = 420 nm), which is caused by the enhanced visible light response, the intimately connect of 2D BiOBr and 1D TiO{sub 2-x}, and the formation of p-n junction. Furthermore, the quantity and dimension of BiOBr nanoplates decorated on TiO{sub 2-x} nanotubes has been well controlled by adjusting the dipping temperature.
- OSTI ID:
- 22805195
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 105; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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