Soft nanobrush-directed multifunctional MOF nanoarrays

Shuang Wang, Wenhe Xie, Ping Wu, Geyu Lin, Yan Cui, Jiawei Tao, Gaofeng Zeng (), Yonghui Deng () and Huibin Qiu ()
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Shuang Wang: Shanghai Jiao Tong University
Wenhe Xie: iChEM, Fudan University
Ping Wu: Chinese Academy of Sciences
Geyu Lin: Shanghai Jiao Tong University
Yan Cui: Shanghai Jiao Tong University
Jiawei Tao: Shanghai Jiao Tong University
Gaofeng Zeng: Chinese Academy of Sciences
Yonghui Deng: iChEM, Fudan University
Huibin Qiu: Shanghai Jiao Tong University

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract Controlled growth of well-oriented metal-organic framework nanoarrays on requisite surfaces is of prominent significance for a broad range of applications such as catalysis, sensing, optics and electronics. Herein, we develop a highly flexible soft nanobrush-directed synthesis approach for precise in situ fabrication of MOF nanoarrays on diverse substrates. The soft nanobrushes are constructed via surface-initiated living crystallization-driven self-assembly and their active poly(2-vinylpyridine) corona captures abundant metal cations through coordination interactions. This allows the rapid heterogeneous growth of MOF nanoparticles and the subsequent formation of MIL-100 (Fe), HKUST-1 and CUT-8 (Cu) nanoarrays with tailored heights of 220~1100 nm on silicon wafer, Ni foam and ceramic tube. Auxiliary functional components including metal oxygen clusters and precious metal nanoparticles can be readily incorporated to finely fabricate hybrid structures with synergistic features. Remarkably, the MIL-100 (Fe) nanoarrays doped with Keggin H3PMo10V2O40 dramatically boost formaldehyde selectivity up to 92.8% in catalytic oxidation of methanol. Moreover, the HKUST-1 nanoarrays decorated with Pt nanoparticles show exceptional sensitivity to H2S with a ppb-level detection limit.

Date: 2022
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DOI: 10.1038/s41467-022-34512-1

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