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In Situ Irradiated X‐Ray Photoelectron Spectroscopy Investigation on a Direct Z‐Scheme TiO2/CdS Composite Film Photocatalyst
Abstract
Inspired by nature, artificial photosynthesis through the construction of direct Z‐scheme photocatalysts is extensively studied for sustainable solar fuel production due to the effectiveness in enhancing photoconversion efficiency. However, there is still a lack of thorough understanding and direct evidence for the direct Z‐scheme charge transfer in these photocatalysts. Herein, a recyclable direct Z‐scheme composite film composed of titanium dioxide and cadmium sulfide (TiO 2/CdS) is prepared for high‐efficiency photocatalytic carbon dioxide (CO 2) reduction. In situ irradiated X‐ray photoelectron spectroscopy (ISI‐XPS) confirms the direct Z‐scheme charge‐carrier migration pathway in the photocatalytic system. Furthermore, density functional theory simulation identifies the intrinsic cause for the formation of the direct Z‐scheme heterojunction between the TiO 2 and the CdS. Thanks to the significantly enhanced redox abilities of the charge carriers in the direct Z‐scheme system, the photocatalytic CO 2 reduction performance of the optimized TiO 2/CdS is 3.5, 5.4, and 6.3 times higher than that of CdS, TiO 2, and commercial TiO 2 (P25), respectively, in terms of methane production. This work is a valuable guideline in preparation of highly efficient recyclable nanocomposite for photoconversion applications.
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Cited by
Ultrathin 2D/2D WO3/g-C3N4 step-scheme H2-production photocatalyst
Fu, J., Xu, Q., Low, J., Jiang, C., & Yu, J. (2019) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2018.11.011 · Cited by 2,767
Self-citationUnique S-scheme heterojunctions in self-assembled TiO2/CsPbBr3 hybrids for CO2 photoreduction
Xu, F., Meng, K., Cheng, B., Wang, S., Xu, J., & Yu, J. (2020) · Nature Communications · doi:10.1038/s41467-020-18350-7 · Cited by 1,456
Self-citationIndustrial carbon dioxide capture and utilization: state of the art and future challenges
Gao, W., Liang, S., Wang, R., Jiang, Q., Zhang, Y., Zheng, Q., Xie, B., Toe, C. Y., Zhu, X., Wang, J., et al. (2020) · Chemical Society Reviews · doi:10.1039/d0cs00025f · Cited by 1,388
Covalent Organic Framework Photocatalysts: Structures and Applications
Wang, H., Wang, H., Wang, Z., Tang, L., Zeng, G., Xu, P., Chen, M., Xiong, T., Zhou, C., Li, X., et al. (2020) · Chemical Society Reviews · doi:10.1039/d0cs00278j · Cited by 1,301
Xia, P., Cao, S., Zhu, B., Liu, M., Shi, M., Yu, J., & Zhang, Y. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.201916012 · Cited by 1,163
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Metadata
- Authors
- Low, J., Dai, B., Tong, T., Jiang, C., & Yu, J.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2018-10-21
- Volume
- 31
- Issue
- 6
- Pages
- e1802981-e1802981
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2896044205
- Cited by
- 929
- References
- 0
- FWCI
- 27.15
- Type
- journal article
- Language
- en
- Open access
- closed
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- Low, J., Dai, B., Tong, T., Jiang, C., & Yu, J. (2019). In Situ Irradiated X‐Ray Photoelectron Spectroscopy Investigation on a Direct Z‐Scheme TiO2/CdS Composite Film Photocatalyst. Advanced Materials. https://doi.org/10.1002/adma.201802981
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