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Isolating contiguous Pt atoms and forming Pt-Zn intermetallic nanoparticles to regulate selectivity in 4-nitrophenylacetylene hydrogenation
Open accessAbstract
Noble metals play a momentous role in heterogeneous catalysis but still face a huge challenge in selectivity control. Herein, we report isolating contiguous Pt atoms and forming Pt-Zn intermetallic nanoparticles as an effective strategy to optimize the selectivity of Pt catalysts. Contiguous Pt atoms are isolated into single atoms and Pt-Zn intermetallic nanoparticles are formed which are supported on hollow nitrogen-doped carbon nanotubes (PtZn/HNCNT), as confirmed by aberration-corrected high-resolution transmission electron microscopy and X-ray absorption spectrometry measurements. Interestingly, this PtZn/HNCNT catalyst promotes the hydrogenation of 4-nitrophenylacetylene to 4-aminophenylacetylene with a much higher conversion ( > 99%) and selectivity (99%) than the comparison samples with Pt isolated-single-atomic-sites (Pt/HNCNT) and Pt nanoparticles (Pt/CN). Further density functional theory (DFT) calculations disclose that the positive Zn atoms assist the adsorption of nitro group and Pt-Zn intermetallic nanoparticles facilitate the hydrogenation on nitro group kinetically.
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Quan, Z., Wang, Y., & Fang, J. (2013) · Accounts of Chemical Research · doi:10.1021/ar200293n · Cited by 582
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Metadata
- Authors
- Han, A., Zhang, J., Sun, W., Chen, W., Zhang, S., Han, Y., Feng, Q., Zheng, L., Gu, L., Chen, C., Peng, Q., Wang, D., & Li, Y.
- Venue
- Nature Communications
- Published
- 2019-08-22
- Volume
- 10
- Issue
- 1
- Pages
- 3787-3787
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2969486582
- Cited by
- 198
- References
- 1
- FWCI
- 8.31
- Type
- journal article
- Language
- en
- Open access
- gold
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- Han, A., Zhang, J., Sun, W., Chen, W., Zhang, S., Han, Y., Feng, Q., Zheng, L., Gu, L., Chen, C., Peng, Q., Wang, D., & Li, Y. (2019). Isolating contiguous Pt atoms and forming Pt-Zn intermetallic nanoparticles to regulate selectivity in 4-nitrophenylacetylene hydrogenation. Nature Communications. https://doi.org/10.1038/s41467-019-11794-6
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