@article{8022d8a94df6474b868ac30c92df43c5,
title = "Tuning Surface Structure of 3D Nanoporous Gold by Surfactant-Free Electrochemical Potential Cycling",
abstract = "3D dealloyed nanoporous metals have emerged as a new class of catalysts for various chemical and electrochemical reactions. Similar to other heterogeneous catalysts, the surface atomic structure of the nanoporous metal catalysts plays a crucial role in catalytic activity and selectivity. Through surfactant-assisted bottom-up synthesis, the surface-structure modification has been successfully realized in low-dimensional particulate catalysts. However, the surface modification by top-down dealloying has not been well explored for nanoporous metal catalysts. Here, a surfactant-free approach to tailor the surface structure of nanoporous gold by surface relaxation via electrochemical redox cycling is reported. By controlling the scan rates, nanoporous gold with abundant {111} facets or {100} facets can be designed and fabricated with dramatically improved electrocatalysis toward the ethanol oxidation reaction.",
keywords = "electrocatalysis, nanoporous gold, surface engineering, surface structure",
author = "Zhili Wang and Shoucong Ning and Pan Liu and Yi Ding and Akihiko Hirata and Takeshi Fujita and Mingwei Chen",
note = "Funding Information: Dr. Z. L. Wang, Dr. A. Hirata, Dr. T. Fujita, Prof. M. W. Chen WPI Advanced Institute for Materials Research Tohoku University Sendai 980-8577, Japan E-mail: mwchen@jhu.edu Dr. S. C. Ning Department of Mechanical and Aerospace Engineering Hong Kong University of Science and Technology Clear Water Bay, Kowloon 999077, Kong SAR Dr. P. Liu, Prof. M. W. Chen School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200030, P. R. China Prof. Y. Ding Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials and Low-Carbon Technologies Tianjin University of Technology Tianjin 300384, P. R. China E-mail: yding@tjut.edu.cn Prof. M. W. Chen CREST Japan Science and Technology Agency Saitama 332-0012, Japan Prof. M. W. Chen Department of Materials Science and Engineering Johns Hopkins University Baltimore, MD 21218, USA Funding Information: This work was sponsored by JST-CREST “Phase Interface Science for Highly Efficient Energy Utilization,” Japan Science and Technology Agency; and World Premier International (WPI) Research Center Initiative for Atoms, Molecules and Materials, MEXT, Japan; and supported by the National Natural Science Foundation of China (Grant Nos. 11327902, 51271113, and 51671145). Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",
year = "2017",
month = nov,
day = "6",
doi = "10.1002/adma.201703601",
language = "English",
volume = "29",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-VCH Verlag",
number = "41",
}