@article{Wang2022, 
author = {Lei Wang and Peng Yin and Wei-Jie Zeng and Shi-Long Xu and Ping Chen and Hai-Wei Liang},
title = {Bulky nanodiamond-confined synthesis of sub-5 nanometer ordered intermetallic Pd3Pb catalysts},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {6},
pages = {4973-4979},
keywords = {strong metal–support interaction, Pd3Pb intermetallic compound, bulky nanodiamond, alkynes semihydrogenation},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4138-4},
doi = {10.1007/s12274-022-4138-4},
abstract = {Modulation of geometric and electronic structures of supported Pd-based catalysts by forming atomically ordered intermetallic phases enables an effective way to optimize catalytic performance. However, the synthesis of small-sized Pd-based intermetallic nanoparticle catalysts with improved mass-based activity remains formidable challenges, since high-temperature annealing generally required for atom ordering inevitably leads to severe metal sintering and thus large crystallites. Here, we present a bulky nanodiamond-confined method to prepare sub-5 nm Pd3Pb intermetallic nanocatalysts by mitigating metal sintering at high temperatures, which is induced by the electronic interactions between metal and defect-rich graphene shells reinforced by diamond cores in the bulky nanodiamond support. The prepared small-sized Pd3Pb intermetallic catalyst displays a high activity with a turnover frequency of 932 h−1 for the semihydrogenation of phenylacetylene under mild conditions (room temperature, 3 bar H2), along with a high selectivity of > 96% to styrene near the complete conversion of phenylacetylene.}
}