Xiao, X., Xi, S., Zang, W., Lim, S. H., Gao, J., Chu, W., Liu, Y. (2022). Insight into Key Parameters for Fabricating Stable Single‐Atom Pt‐Nix Alloy by Reduction Environment‐Induced Anti‐Ostwald Effects. ChemSusChem, 16(2). Portico. https://doi.org/10.1002/cssc.202201885
Abstract:
Developing single‐atom catalysts with superior stability under reduction conditions is essential for hydrogenation/dehydrogenation catalysis and green hydrogen generation. In this contribution, single‐atom Pt catalysts were achieved via a reduction environment‐induced anti‐Ostwald approach in the highly confined Ni species (Pt‐Nix) on nonreducible Al2O3 matrix. In‐situ X‐ray absorption spectroscopy indicated that the isolated Pt‐Nix metallic bonds, generated at high reduction temperature, dominated the formation of single Pt atoms. A relatively large cluster of metallic Ni would benefit the stabilization of Pt single atom as observed via high‐angle annular dark‐field scanning transmission electron microscopy and validated by density functional theory simulation. Excellent performance on cellulose hydrogenolysis was demonstrated under harsh reductive and hydrothermal conditions, potentially expandable to other hydrogen involved reactions like CO2 hydrogenation, green hydrogen production from different hydrogen carriers, and beyond.
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Funding Info:
This research is supported by core funding from: A*STAR Institute of Sustainability for Chemicals, Energy and Environment (ISCE²)
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Description:
This is the peer reviewed version of the following article: Xiao, X., Xi, S., Zang, W., Lim, S. H., Gao, J., Chu, W., & Liu, Y. (2022). Insight into Key Parameters for Fabricating Stable Single‐Atom Pt‐Nix Alloy by Reduction Environment‐Induced Anti‐Ostwald Effects. ChemSusChem, 16(2). Portico. https://doi.org/10.1002/cssc.202201885, which has been published in final form at https://doi.org/10.1002/cssc.202201885. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.