Citation: Li Bo, Nengzi Li-Chao, Guo Ruonan, Cui Yuqi, Zhang Youxian, Cheng Xiuwen. Novel synthesis of Z-scheme α-Bi₂O₃/g-C₃N₄ composite photocatalyst and its enhanced visible light photocatalytic performance: Influence of calcination temperature[J]. Chinese Chemical Letters, ;2020, 31(10): 2705-2711. doi: 10.1016/j.cclet.2020.04.026 shu

Novel synthesis of Z-scheme α-Bi₂O₃/g-C₃N₄ composite photocatalyst and its enhanced visible light photocatalytic performance: Influence of calcination temperature

Li Bo ^a ,
Nengzi Li-Chao ^b ,
Guo Ruonan ^a ,
Cui Yuqi ^a ,
Zhang Youxian ^a,*, ,
Cheng Xiuwen ^a,b,*,

a.
Key Laboratory of Western China's Environmental Systems(Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
b.
Academy of Economics and Environmental Sciences, Xichang University, Xichang 615000, China

zhangyx@lzu.edu.cn

chengxw@lzu.edu.cn

Received Date: 8 March 2020
Revised Date: 31 March 2020
Accepted Date: 13 April 2020
Available Online: 23 April 2020

Figures(4)

In this study, α-Bi₂O₃/g-C₃N₄ nanocomposite with direct Z-scheme was successfully prepared through calcination of BiOCOOH/g-C₃N₄ precursor at different temperature. Meanwhile, the effect of calcination temperature on the physicochemical properties of α-Bi₂O₃/g-C₃N₄ was studied. All results confirmed that calcination temperature greatly influences structural, morphology, surface states, photoelectrochemical property and photocatalytic (PC) performance of α-Bi₂O₃/g-C₃N₄ composite. Furthermore, the α-Bi₂O₃/g-C₃N₄ composite was applied as photocatalyst to degrade amido black 10B dye under visible light irradiation. It was found that the composite synthesized at 400 ℃ exhibited the highest PC performance due to the intense visible light absorbance and high separation efficiency of electron and hole pairs. Besides, the possible PC mechanism was proposed that the photo-generated charge carrier migration in α-Bi₂O₃/g-C₃N₄ photocatalyst followed a Z-scheme structure. Finally, the stability test also manifest that the α-Bi₂O₃/g-C₃N₄ composite photocatalyst has good stability and reusability, which was a promising candidate for wastewater treatment.
- α-Bi₂O₃/g-C₃N₄,
- Photocatalysis,
- Calcination temperature,
- Z-scheme
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Novel synthesis of Z-scheme α-Bi2O3/g-C3N4 composite photocatalyst and its enhanced visible light photocatalytic performance: Influence of calcination temperature

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通讯作者: 陈斌, bchen63@163.com

Novel synthesis of Z-scheme α-Bi₂O₃/g-C₃N₄ composite photocatalyst and its enhanced visible light photocatalytic performance: Influence of calcination temperature