Guo Mintong, Jin Ziqi, Pan Jianmin, Xu Jingli, Guo Lixian, Yin Xue-Bo, Lu Na, Zhang Min
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
Jinan Children's Hospital, Jinan 250022, China.
Inorg Chem. 2024 Sep 30;63(39):18263-18275. doi: 10.1021/acs.inorgchem.4c03151. Epub 2024 Sep 19.
Here, we report ternary COFs@MoS-Pd hybrids with an innovative self-sacrificial approach. MoO@Covalent organic frameworks (COFs) microcables were first prepared and then two-dimensional MoS nanosheets (NSs) were integrated onto the surface of COFs, as COFs@MoS, after treatment with hydrothermal reaction. The MoS NSs were used as an excellent support to introduce Pd nanoparticles (NPs) thanks to their reducing ability for the formation of the ternary COFs@MoS-Pd hybrids. While COF microtubes improved the electrical conductivity of the hybrid materials, they also decreased the aggregation of MoS NSs, as a contribution to the enhanced catalytic performance. The mild reaction between MoS and Pd ions realized the dense distribution of Pd NPs onto COFs@MoS for abundant active sites to further improve the catalytic performance. Thus, the hierarchical MoS-based ternary hybrids were prepared with the enhanced catalytical performance as validated with the enzyme-like catalysis and the reduction of 4-nitrophenol.
在此，我们报道了采用创新的自牺牲方法制备的三元COFs@MoS-Pd杂化物。首先制备了MoO@共价有机框架（COFs）微电缆，然后在水热反应处理后，将二维MoS纳米片（NSs）整合到COFs表面，形成COFs@MoS。由于MoS NSs具有还原能力以形成三元COFs@MoS-Pd杂化物，因此被用作引入钯纳米颗粒（NPs）的优良载体。虽然COF微管提高了杂化材料的电导率，但它们也减少了MoS NSs的聚集，这有助于提高催化性能。MoS与钯离子之间的温和反应实现了钯NPs在COFs@MoS上的密集分布，从而提供了丰富的活性位点，进一步提高了催化性能。因此，制备了具有增强催化性能的分级MoS基三元杂化物，这通过类酶催化和对4-硝基苯酚的还原得到了验证。
