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Unique S-scheme heterojunctions in self-assembled TiO2/CsPbBr3 hybrids for CO2 photoreduction

Author

Listed:
  • Feiyan Xu

    (Wuhan University of Technology
    Xianhu Hydrogen Valley)

  • Kai Meng

    (Wuhan University of Technology)

  • Bei Cheng

    (Wuhan University of Technology)

  • Shengyao Wang

    (Huazhong Agricultural University)

  • Jingsan Xu

    (Queensland University of Technology)

  • Jiaguo Yu

    (Wuhan University of Technology
    Xianhu Hydrogen Valley)

Abstract

Exploring photocatalysts to promote CO2 photoreduction into solar fuels is of great significance. We develop TiO2/perovskite (CsPbBr3) S-scheme heterojunctions synthesized by a facile electrostatic-driven self-assembling approach. Density functional theory calculation combined with experimental studies proves the electron transfer from CsPbBr3 quantum dots (QDs) to TiO2, resulting in the construction of internal electric field (IEF) directing from CsPbBr3 to TiO2 upon hybridization. The IEF drives the photoexcited electrons in TiO2 to CsPbBr3 upon light irradiation as revealed by in-situ X-ray photoelectron spectroscopy analysis, suggesting the formation of an S-scheme heterojunction in the TiO2/CsPbBr3 nanohybrids which greatly promotes the separation of electron-hole pairs to foster efficient CO2 photoreduction. The hybrid nanofibers unveil a higher CO2-reduction rate (9.02 μmol g–1 h–1) comparing with pristine TiO2 nanofibers (4.68 μmol g–1 h–1). Isotope (13CO2) tracer results confirm that the reduction products originate from CO2 source.

Suggested Citation

  • Feiyan Xu & Kai Meng & Bei Cheng & Shengyao Wang & Jingsan Xu & Jiaguo Yu, 2020. "Unique S-scheme heterojunctions in self-assembled TiO2/CsPbBr3 hybrids for CO2 photoreduction," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18350-7
    DOI: 10.1038/s41467-020-18350-7
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    Cited by:

    1. Yajuan Ma & Xiaoxuan Yi & Shaolei Wang & Tao Li & Bien Tan & Chuncheng Chen & Tetsuro Majima & Eric R. Waclawik & Huaiyong Zhu & Jingyu Wang, 2022. "Selective photocatalytic CO2 reduction in aerobic environment by microporous Pd-porphyrin-based polymers coated hollow TiO2," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Shengyao Wang & Bo Jiang & Joel Henzie & Feiyan Xu & Chengyuan Liu & Xianguang Meng & Sirong Zou & Hui Song & Yang Pan & Hexing Li & Jiaguo Yu & Hao Chen & Jinhua Ye, 2023. "Designing reliable and accurate isotope-tracer experiments for CO2 photoreduction," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    3. Xin Wang & Boyan Liu & Siqing Ma & Yingjuan Zhang & Lianzhou Wang & Gangqiang Zhu & Wei Huang & Songcan Wang, 2024. "Induced dipole moments in amorphous ZnCdS catalysts facilitate photocatalytic H2 evolution," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    4. Tian, Di & Qu, Zhiguo & Zhang, Jianfei, 2023. "Electrochemical condition optimization and techno-economic analysis on the direct CO2 electroreduction of flue gas," Applied Energy, Elsevier, vol. 351(C).
    5. Jie Zhou & Jie Li & Liang Kan & Lei Zhang & Qing Huang & Yong Yan & Yifa Chen & Jiang Liu & Shun-Li Li & Ya-Qian Lan, 2022. "Linking oxidative and reductive clusters to prepare crystalline porous catalysts for photocatalytic CO2 reduction with H2O," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    6. Xinfeng Chen & Chengdong Peng & Wenyan Dan & Long Yu & Yinan Wu & Honghan Fei, 2022. "Bromo- and iodo-bridged building units in metal-organic frameworks for enhanced carrier transport and CO2 photoreduction by water vapor," Nature Communications, Nature, vol. 13(1), pages 1-14, December.
    7. Aiwen Wang & Meng Du & Jiaxin Ni & Dongqing Liu & Yunhao Pan & Xiongying Liang & Dongmei Liu & Jun Ma & Jing Wang & Wei Wang, 2023. "Enhanced and synergistic catalytic activation by photoexcitation driven S−scheme heterojunction hydrogel interface electric field," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    8. Fang Li & Xiaoyang Yue & Yulong Liao & Liang Qiao & Kangle Lv & Quanjun Xiang, 2023. "Understanding the unique S-scheme charge migration in triazine/heptazine crystalline carbon nitride homojunction," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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