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Journal Article

A Derivative of ZnIn2S4 Nanosheet Supported Pd Boosts Selective CO2 Hydrogenation

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Hu,  Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Wang, K., Zhu, Y., Gu, M., Hu, Z., Chang, Y.-C., Pao, C.-W., et al. (2023). A Derivative of ZnIn2S4 Nanosheet Supported Pd Boosts Selective CO2 Hydrogenation. Advanced Functional Materials, 33(30): 2215148, pp. 1-8. doi:10.1002/adfm.202215148.


Cite as: https://hdl.handle.net/21.11116/0000-000D-13A5-3
Abstract
CO2 hydrogenation to value-added chemicals has been considered as a promising way to reduce CO2 emission and alleviate energy crisis. However, the high-efficiency CO2 hydrogenation process is driven by the current drawbacks of low activity and/or selectivity. Herein, it is demonstrated that 2D S-doped ZnInOx, which evolves from the calcination of ZnIn2S4 nanosheets (ZIS NSs), can serve as a functional support for Pd nanoparticles (NPs) to promote the selective CO2 hydrogenation to CH3OH. Detailed investigations show that ZnIn2S4 will evolve into In2O3 and amorphous S-doped ZnO, on which Pd NPs are preferentially located due to the strong electrophilicity of S. Consequently, the strong interaction between Pd NPs and amorphous S-doped ZnO prevents Pd NPs from sintering and facilitates the selective CO2 hydrogenation to produce CH3OH. The optimal catalyst shows a CO2 conversion of 12.7 with a CH3OH selectivity of 87.4 at 280 °C. This study provides a facile route to regulate catalytic supports and controllably load active species, which may attract great research interests in the fields of heterogeneous catalysis. © 2023 Wiley-VCH GmbH.