Journal Article10.1016/j.saa.2023.123405
Construction of Z-scheme Bi2O3/CeO2 heterojunction for enhanced photocatalytic capacity of TiO2 NTs.
Qingyao Wang,Sheng-Xian Zhao,Yuhua Zhao,Yadan Deng,Wen Yang,Yizhuang Ye,Kesheng Wang +6 more
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TL;DR: A Z-scheme Bi2O3/CeO2 heterojunction was constructed on TiO2 nanotube arrays via hydrothermal deposition, enhancing photocatalytic performance by extending solar absorption and accelerating photoelectron separation, with high RhB/MB photodegradation and Cr(VI) reduction.
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Abstract: Photocatalytic technology was recognized to be the effective strategy to overcome the obstacles of environment pollution and energy shortage, and the novel photocatalyst design/construction was the key point for photocatalytic performance improvement. In this paper, the Z-scheme Bi2O3 and CeO2 heterojunction was constructed on TiO2 nanotube arrays (TiO2 NTs) by the hydrothermal deposition method. The Bi2O3-CeO2 cosensitization not only extended the solar absorption region but also accelerated the photoelectron separation and transfer, finally enhanced the photocatalytic property. The photocatalysts exhibited the high RhB/MB photodegradation and Cr(VI) reduction, and the photoelectric conversion and photocatalytic H2 evolution were also preeminent. The Z-scheme heterojunction construction was recognized to be the reason for the high photoactivity, and O2- and OH radicals were formed and investigated as the main active species for the dye photodegradation. The work gives the simple method and idea to construct novel ternary Z-scheme heterojunctions with high photocatalytic capacity for environment remediation and new energy development.
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Citations
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