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Nanorattle Au@PtAg encapsulated in ZIF-8 for enhancing CO2 photoreduction to CO

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Abstract

Imidazolate-based ZIF-8 catalysts M@ZIF-8 (M = Au NR, Au@Ag NR, or Au@PtAg NRT; NR = nanorod, NRT = nanorattle), were assembled. Au NRs acted as the core for the epitaxial growth of the Ag shell, and oxidative etching of Au@Ag NRs led to Au@PtAg NRTs with K2PtCl4 aqueous solution. All metal nanorods (MNRs) and metal nanorattles (MNRTs) were well dispersed and fully encapsulated in ZIF-8. Au@PtAg NRTs encapsulated in ZIF-8 could lead to enhanced stability and selectivity for catalytic applications, combining the advantages of ZIF-8 (tailorable porosity) with the high surface area and improved optical sensitivity of rod-shaped NRTs. The catalyst Au@PtAg@ZIF-8 exhibited efficient catalytic activity and CO selectivity for the gas-phase photoreduction of CO2 with H2O.

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Acknowledgements

We gratefully acknowledge the financial support from the National Natural Science Foundation of China (No. 21371058).

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  1. State Key Laboratory of Chemical Engineering, Membrane Science and Engineering R&D Lab, Chemical Engineering Research Center, East China University of Science and Technology (ECUST), 130 Meilong Road, Shanghai, 200237, China

    Yuqun Su, Haitao Xu, Jiajia Wang, Xikuo Luo & Zhen-liang Xu

  2. State Key Laboratory of High Performance Ceramics and Super Fine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, China

    Kefu Wang & Wenzhong Wang

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  1. Yuqun Su
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Su, Y., Xu, H., Wang, J. et al. Nanorattle Au@PtAg encapsulated in ZIF-8 for enhancing CO2 photoreduction to CO. Nano Res. 12, 625–630 (2019). https://doi.org/10.1007/s12274-018-2269-4

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