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Two-dimensional transition metal carbides as supports for tuning the chemistry of catalytic nanoparticles

2018; Nature Portfolio; Volume: 9; Issue: 1 Linguagem: Inglês

10.1038/s41467-018-07502-5

2041-1723

Zhe Li, Liang Yu, Cory A. Milligan, Tao Ma, Lin Zhou, Yanran Cui, Zhiyuan Qi, Nicole J. LiBretto, Biao Xu, Junwei Luo, Enzheng Shi, Zhenwei Wu, Hongliang Xin, W. Nicholas Delgass, Jeffrey T. Miller, Yue Wu,

Nanomaterials for catalytic reactions

Abstract Supported nanoparticles are broadly employed in industrial catalytic processes, where the active sites can be tuned by metal-support interactions (MSIs). Although it is well accepted that supports can modify the chemistry of metal nanoparticles, systematic utilization of MSIs for achieving desired catalytic performance is still challenging. The developments of supports with appropriate chemical properties and identification of the resulting active sites are the main barriers. Here, we develop two-dimensional transition metal carbides (MXenes) supported platinum as efficient catalysts for light alkane dehydrogenations. Ordered Pt 3 Ti and surface Pt 3 Nb intermetallic compound nanoparticles are formed via reactive metal-support interactions on Pt/Ti 3 C 2 T x and Pt/Nb 2 CT x catalysts, respectively. MXene supports modulate the nature of the active sites, making them highly selective toward C–H activation. Such exploitation of the MSIs makes MXenes promising platforms with versatile chemical reactivity and tunability for facile design of supported intermetallic nanoparticles over a wide range of compositions and structures.