Investigation on Synthesis of BCN/SnO<sub>2</sub> Heterojunction and Its Photocatalytic Properties

ZHANG Ming; LI Sainan; ZHANG Chi; MA Linhao; PENG Kai; YANG Wei

doi:10.11936/bjutxb2022080006

Journal of Beijing University of Technology > 2024 > 50(5): 534-542. > DOI: 10.11936/bjutxb2022080006

ZHANG Ming, LI Sainan, ZHANG Chi, MA Linhao, PENG Kai, YANG Wei. Investigation on Synthesis of BCN/SnO₂ Heterojunction and Its Photocatalytic Properties[J]. Journal of Beijing University of Technology, 2024, 50(5): 534-542. DOI: 10.11936/bjutxb2022080006

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Investigation on Synthesis of BCN/SnO₂ Heterojunction and Its Photocatalytic Properties

ZHANG Ming^{1, 2,},
LI Sainan^{1, 2},
ZHANG Chi^{1, 2},
MA Linhao^{1, 2},
PENG Kai^{1, 2},
YANG Wei³

1.
Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
2.
Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing 100124, China
3.
Beijing Dingshengcheng Packing Material Co., Ltd., Beijing 100040, China

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Received Date: August 10, 2022
Revised Date: November 17, 2022
Available Online: May 08, 2024

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Abstract

Abstract

The development of photocatalytic materials is considered to be one of the effective strategies to alleviate energy shortage and environmental pollution. However, it remains a challenging goal in the field of photocatalysis to simultaneously achieve high efficiency, long-term stability and a wide range of light response. In this paper, BCN/SnO₂ heterojunction were prepared by hydrothermal assisted thermal polymerization of stannic oxide and graphite phase carbon nitride precursor. Results show that BCN/SnO₂ heterojunction has excellent photocatalytic degradation activity, and the degradation rate of methylene blue (MB) can reach 94.8 % when the simulated sunlight irradiation is 40 min. This is due to the synergistic effect of heterostructure and B-doping, which is mainly manifested in the enhancement of visible light absorption characteristics by reducing optical band gap, and the reduction of electron-hole pair recombination, and thus improves the photocatalytic activity. In addition, a model of interfacial band structure of heterojunction was constructed by experiments, the active species and reaction mechanism of photocatalytic degradation were analyzed and discussed in depth.
- g-C₃N₄,
- heterostructure,
- photocatalysis,
- photogenerated carrier,
- B-doping,
- organics degradation

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References (39)

References

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Investigation on Synthesis of BCN/SnO₂ Heterojunction and Its Photocatalytic Properties