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|Title:||Strong metal-support interaction for 2D materials: application in noble metal/TiB₂ heterointerfaces and their enhanced catalytic performance for formic acid dehydrogenation||Authors:||Li, Renhong
Trinh, Quang Thang
Wong, Roong Jien
Choksi, Tej S.
|Keywords:||Engineering::Chemical engineering||Issue Date:||2021||Source:||Li, R., Liu, Z., Trinh, Q. T., Miao, Z., Chen, S., Qian, K., Wong, R. J., Xi, S., Yan, Y., Borgna, A., Liang, S., Wei, T., Dai, Y., Wang, P., Tang, Y., Yan, X., Choksi, T. S. & Liu, W. (2021). Strong metal-support interaction for 2D materials: application in noble metal/TiB₂ heterointerfaces and their enhanced catalytic performance for formic acid dehydrogenation. Advanced Materials, 33(32), 2101536-. https://dx.doi.org/10.1002/adma.202101536||Journal:||Advanced Materials||Abstract:||Strong metal-support interaction (SMSI) is a phenomenon commonly observed on heterogeneous catalysts. Here, direct evidence of SMSI between noble metal and 2D TiB2 supports is reported. The temperature-induced TiB2 overlayers encapsulate the metal nanoparticles, resulting in core-shell nanostructures that are sintering-resistant with metal loadings as high as 12.0 wt%. The TiOx -terminated TiB2 surfaces are the active sites catalyzing the dehydrogenation of formic acid at room temperature. In contrast to the trade-off between stability and activity in conventional SMSI, TiB2 -based SMSI promotes catalytic activity and stability simultaneously. By optimizing the thickness and coverage of the overlayer, the Pt/TiB2 catalyst displays an outstanding hydrogen productivity of 13.8 mmol g-1 cat h-1 in 10.0 m aqueous solution without any additive or pH adjustment, with >99.9% selectivity toward CO2 and H2 . Theoretical studies suggest that the TiB2 overlayers are stabilized on different transition metals through an interplay between covalent and electrostatic interactions. Furthermore, the computationally determined trends in metal-TiB2 interactions are fully consistent with the experimental observations regarding the extent of SMSI on different transition metals. The present research introduces a new means to create thermally stable and catalytically active metal/support interfaces for scalable chemical and energy applications.||URI:||https://hdl.handle.net/10356/160714||ISSN:||0935-9648||DOI:||10.1002/adma.202101536||Schools:||School of Chemical and Biomedical Engineering||Organisations:||Cambridge Centre for Advanced Research and Education||Rights:||© 2021 Wiley-VCH GmbH. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||SCBE Journal Articles|
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