期刊
MATERIALS CHEMISTRY FRONTIERS
卷 4, 期 4, 页码 1158-1163出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0qm00040j
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资金
- National Natural Science Foundation of China [21971135, 21925202, 21872076]
- Beijing Natural Science Foundation [JQ18007]
- Tsinghua University Initiative Scientific Research Program
Densely populated metal atomic site catalysts play a key role in practical catalysis applications. Herein, we report an amorphous nanobox with high-density atomic platinum species which are uniformly dispersed into the ZIF-8 skeleton through cation exchange. During the dispersing process, the ZIF-8 core was gradually etched into the hollow structure though the Kirkendall effect, and a great amount substitutions of Pt with Zn breaks the initial long-range ordered ZIF-8 topology into a distorted skeleton which leads to the significantly unsaturated coordination of atomic Pt species. The high-density atomic Pt nanoboxes exhibit excellent performance in direct C-H bond borylation of arenes which are usually catalyzed by homogeneous complexes. Such high-density atomic site heterogeneous catalysts could serve as a bridge to convert from homogeneous to heterogeneous catalysis.
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