Extending the limits of Pt/C catalysts with passivation-gas-incorporated atomic layer deposition. Xu, S., Kim, Y., Park, J., Higgins, D., Shen, S., Schindler, P., Thian, D., Provine, J., Torgersen, J., Graf, T., Schladt, T. D., Orazov, M., Liu, B. H., Jaramillo, T. F., & Prinz, F. B. Nature Catalysis, 1(8):624–630, August, 2018. Number: 8 Publisher: Nature Publishing Group![Extending the limits of Pt/C catalysts with passivation-gas-incorporated atomic layer deposition [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Controlling the morphology of noble metal nanoparticles during surface depositions is strongly influenced by precursor–substrate and precursor–deposit interactions. Depositions can be improved through a variety of means, including tailoring the surface energy of a substrate to improve precursor wettability, or by modifying the surface energy of the deposits themselves. Here, we show that carbon monoxide can be used as a passivation gas during atomic layer deposition to modify the surface energy of already deposited Pt nanoparticles to assist direct deposition onto a carbon catalyst support. The passivation process promotes two-dimensional growth leading to Pt nanoparticles with suppressed thicknesses and a more than 40% improvement in Pt surface-to-volume ratio. This approach to synthesizing nanoparticulate Pt/C catalysts achieved high Pt mass activities for the oxygen reduction reaction, along with excellent stability likely facilitated by strong catalyst–support interactions afforded by this synthetic technique.
@article{xu_extending_2018,
title = {Extending the limits of {Pt}/{C} catalysts with passivation-gas-incorporated atomic layer deposition},
volume = {1},
copyright = {2018 The Author(s)},
issn = {2520-1158},
url = {https://www.nature.com/articles/s41929-018-0118-1},
doi = {10.1038/s41929-018-0118-1},
abstract = {Controlling the morphology of noble metal nanoparticles during surface depositions is strongly influenced by precursor–substrate and precursor–deposit interactions. Depositions can be improved through a variety of means, including tailoring the surface energy of a substrate to improve precursor wettability, or by modifying the surface energy of the deposits themselves. Here, we show that carbon monoxide can be used as a passivation gas during atomic layer deposition to modify the surface energy of already deposited Pt nanoparticles to assist direct deposition onto a carbon catalyst support. The passivation process promotes two-dimensional growth leading to Pt nanoparticles with suppressed thicknesses and a more than 40\% improvement in Pt surface-to-volume ratio. This approach to synthesizing nanoparticulate Pt/C catalysts achieved high Pt mass activities for the oxygen reduction reaction, along with excellent stability likely facilitated by strong catalyst–support interactions afforded by this synthetic technique.},
language = {en},
number = {8},
urldate = {2023-03-16},
journal = {Nature Catalysis},
author = {Xu, Shicheng and Kim, Yongmin and Park, Joonsuk and Higgins, Drew and Shen, Shih-Jia and Schindler, Peter and Thian, Dickson and Provine, J. and Torgersen, Jan and Graf, Tanja and Schladt, Thomas D. and Orazov, Marat and Liu, Bernard Haochih and Jaramillo, Thomas F. and Prinz, Fritz B.},
month = aug,
year = {2018},
note = {Number: 8
Publisher: Nature Publishing Group},
keywords = {1, ALD, catalysis-Pt, my},
pages = {624--630},
}
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