Boron nitride nanotubes supported icosahedral Pd nanoparticles: Enabling ultrahigh current density-superior hydrogen evolution activity and theoretical insights
- Authors
- Venkateswarlu, Sada; Kim, Sooyeon; Balamurugan, Mani; Son, Younghu; Yoon, Minyoung; Nam, Ki Tae; Han, Sang Soo; Kim, Myung Jong
- Issue Date
- May-2024
- Publisher
- ELSEVIER
- Keywords
- Boron nitride nanotubes; Icosahedral Pd nanoparticles; Solvothermal synthesis; Hydrogen evolution reaction; Density functional theory
- Citation
- APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY, v.345
- Journal Title
- APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
- Volume
- 345
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/90387
- DOI
- 10.1016/j.apcatb.2023.123609
- ISSN
- 0926-3373
1873-3883
- Abstract
- An in-situ growth of icosahedral (IC) Pd nanoparticles (NPs) on boron nitride nanotubes (BNNTs) is explored with an external surfactant and reducing agent-free strategy. The IC-Pd@BNNT catalysts show an ultrahigh current density of over - 1000 mA cm-2 with a low overpotential of 199 mV for the hydrogen evolution reaction (HER). At - 20 mA cm-2, the overpotential was as low as 15.7 mV in an acidic medium, which is superior than commercial Pd/C (62.6 mV), and Pt/C (29.4 mV). Moreover, the HER activity of the IC-Pd@BNNT catalysts is maintained even after an accelerated durability test of 40,000 cycles, indicating that the BNNTs are served as a durable support, maintaining the structural integrity of the catalyst. Density functional theory (DFT) calculations confirm that the IC-Pd on the BNNT support with vacancy defects is highly stable and HER active. From the Gas chromatography H2 gas was quantified, and the Faradaic efficiency was achieved to 98.96%.
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