Abstract
Here, we report ternary COFs@MoS2-Pd hybrids with an innovative self-sacrificial approach. MoO3@Covalent organic frameworks (COFs) microcables were first prepared and then two-dimensional MoS2 nanosheets (NSs) were integrated onto the surface of COFs, as COFs@MoS2, after treatment with hydrothermal reaction. The MoS2 NSs were used as an excellent support to introduce Pd nanoparticles (NPs) thanks to their reducing ability for the formation of the ternary COFs@MoS2-Pd hybrids. While COF microtubes improved the electrical conductivity of the hybrid materials, they also decreased the aggregation of MoS2 NSs, as a contribution to the enhanced catalytic performance. The mild reaction between MoS2 and Pd2+ ions realized the dense distribution of Pd NPs onto COFs@MoS2 for abundant active sites to further improve the catalytic performance. Thus, the hierarchical MoS2-based ternary hybrids were prepared with the enhanced catalytical performance as validated with the enzyme-like catalysis and the reduction of 4-nitrophenol.
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