1
|
Iqbal M, Kim Y, Saputro AG, Shukri G, Yuliarto B, Lim H, Nara H, Alothman AA, Na J, Bando Y, Yamauchi Y. Tunable Concave Surface Features of Mesoporous Palladium Nanocrystals Prepared from Supramolecular Micellar Templates. ACS Appl Mater Interfaces 2020; 12:51357-51365. [PMID: 33146017 DOI: 10.1021/acsami.0c13136] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Concave metallic nanocrystals with a high density of low-coordinated atoms on the surface are essential for the realization of unique catalytic properties. Herein, mesoporous palladium nanocrystals (MPNs) that possess various degrees of curvature are successfully synthesized following an approach that relies on a facile polymeric micelle assembly approach. The as-prepared MPNs exhibit larger surface areas compared to conventional Pd nanocrystals and their nonporous counterparts. The MPNs display enhanced electrocatalytic activity for ethanol oxidation when compared to state-of-the-art commercial palladium black and conventional palladium nanocubes used as catalysts. Interestingly, as the degree of curvature increases, the surface-area-normalized activity also increases, demonstrating that the curvature of MPNs and the presence of high-index facets are crucial considerations for the design of electrocatalysts.
Collapse
Affiliation(s)
- Muhammad Iqbal
- Institute of Molecular Plus, Tianjin University, Building 11, 92 Weijin Road, Nankai District, Tianjin 300072, P. R. China
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Advanced Functional Materials Research Group and Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia
| | - Yena Kim
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Adhitya Gandaryus Saputro
- Advanced Functional Materials Research Group and Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia
| | - Ganes Shukri
- Advanced Functional Materials Research Group and Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia
| | - Brian Yuliarto
- Advanced Functional Materials Research Group and Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia
| | - Hyunsoo Lim
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia
| | - Hiroki Nara
- Research Organization for Nano and Life Innovation, Waseda University, 513 Waseda-Tsurumakicho, Shinjuku-ku, Tokyo 162-0041, Japan
- JST-ERATO Yamauchi Materials Space-Tectonics Project, Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
| | - Asma A Alothman
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Jongbeom Na
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia
| | - Yoshio Bando
- Institute of Molecular Plus, Tianjin University, Building 11, 92 Weijin Road, Nankai District, Tianjin 300072, P. R. China
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Australian Institute of Innovative Materials, University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia
| | - Yusuke Yamauchi
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia
- JST-ERATO Yamauchi Materials Space-Tectonics Project, Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
| |
Collapse
|