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Electrochemically induced deposition of hydroxyl-te...
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Composition-dependent catalytic activity of bimetallic PtPd dendrimer-encapsulated nanoparticles having an average size of 1.7 nm for hydrolytic dehydrogenation of ammonia borane
| Journal | Korean J. Chem. Eng. |
|---|---|
| Author | Youngwon Ju, Joohoon Kim |
| Citation | Korean J. Chem. Eng., 37(8), 1387-1393 (2020) |
| DOI | https://doi.org/10.1007/s11814-020-0604-4 |
We investigated composition-dependent catalytic activity of bimetallic
PtPd dendrimer-encapsulated nanoparticles (DENs) that had a uniform size
of ∼1.7nm for hydrolytic dehydrogenation of ammonia borane (AB). The
PtPd DENs, composed of seven different Pt: Pd ratios, were synthesized
using hydroxyl-terminated sixth-generation polyamidoamine dendrimers as a
molecular template. The dendrimer-templating method allowed for
synthesizing bimetallic PtPd DENs with controllable nanoparticle
composition while fixing the size of the nanoparticles uniformly at ∼1.7
nm. Compared with monometallic Pt and Pd DENs, the bimetallic PtPd DENs
showed superior catalytic activity for the hydrolytic dehydrogenation
of AB. Furthermore, the bimetallic PtPd DENs exhibited
composition-dependent activity with the maximum activity (i.e., average
turnover frequency=108.5±15.9molH2·molatom Pt+pd?1·min?1) at a Pt: Pd ratio of 1:1 for the catalytic hydrolysis of AB.
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Composition-dependent catalytic activity of bimetallic PtPd dendrimer-encapsulated nanoparticles having an average size of 1.7 nm for hydrolytic dehydrogenation of ammonia borane
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