journal article·2020-11-18

Tunable Concave Surface Features of Mesoporous Palladium Nanocrystals Prepared from Supramolecular Micellar Templates

Muhammad Iqbal, Yena Kim, Adhitya Gandaryus Saputro, Ganes Shukri, Brian Yuliarto, Hyunsoo Lim, Hiroki Nara, Asma A. Alothman, Jongbeom Na, Yoshio Bando, Yusuke Yamauchi

ACS Applied Materials & Interfaces· Volume 12· Issue 46
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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.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Nanomaterials for catalytic reactions · Catalytic Processes in Materials Science

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

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

School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia

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

Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia

Australian Institute of Innovative Materials, University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia

Funding

National Research Foundation of Korea · King Saud University · National Collaborative Research Infrastructure Strategy

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