TY - JOUR
T1 - Engineering the internal surfaces of three-dimensional nanoporous catalysts by surfactant-modified dealloying
AU - Wang, Zhili
AU - Liu, Pan
AU - Han, Jiuhui
AU - Cheng, Chun
AU - Ning, Shoucong
AU - Hirata, Akihiko
AU - Fujita, Takeshi
AU - Chen, Mingwei
N1 - 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; National Natural Science Foundation of China (Grant No. 11327902, and 51271113), and partially supported by JST-CREST program (Grant No. JPMJCR15P1).
Publisher Copyright:
© 2017 The Author(s).
PY - 2017/12/1
Y1 - 2017/12/1
N2 - Tuning surface structures by bottom-up synthesis has been demonstrated as an effective strategy to improve the catalytic performances of nanoparticle catalysts. Nevertheless, the surface modification of three-dimensional nanoporous metals, fabricated by a top-down dealloying approach, has not been achieved despite great efforts devoted to improving the catalytic performance of three-dimensional nanoporous catalysts. Here we report a surfactant-modified dealloying method to tailor the surface structure of nanoporous gold for amplified electrocatalysis toward methanol oxidation and oxygen reduction reactions. With the assistance of surfactants, {111} or {100} faceted internal surfaces of nanoporous gold can be realized in a controllable manner by optimizing dealloying conditions. The surface modified nanoporous gold exhibits significantly enhanced electrocatalytic activities in comparison with conventional nanoporous gold. This study paves the way to develop high-performance three-dimensional nanoporous catalysts with a tunable surface structure by top-down dealloying for efficient chemical and electrochemical reactions.
AB - Tuning surface structures by bottom-up synthesis has been demonstrated as an effective strategy to improve the catalytic performances of nanoparticle catalysts. Nevertheless, the surface modification of three-dimensional nanoporous metals, fabricated by a top-down dealloying approach, has not been achieved despite great efforts devoted to improving the catalytic performance of three-dimensional nanoporous catalysts. Here we report a surfactant-modified dealloying method to tailor the surface structure of nanoporous gold for amplified electrocatalysis toward methanol oxidation and oxygen reduction reactions. With the assistance of surfactants, {111} or {100} faceted internal surfaces of nanoporous gold can be realized in a controllable manner by optimizing dealloying conditions. The surface modified nanoporous gold exhibits significantly enhanced electrocatalytic activities in comparison with conventional nanoporous gold. This study paves the way to develop high-performance three-dimensional nanoporous catalysts with a tunable surface structure by top-down dealloying for efficient chemical and electrochemical reactions.
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U2 - 10.1038/s41467-017-01085-3
DO - 10.1038/s41467-017-01085-3
M3 - Article
C2 - 29057916
AN - SCOPUS:85032197331
SN - 2041-1723
VL - 8
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 1066
ER -