Superior electrocatalytic activity of mesoporous Au film templated from diblock copolymer micelles
block copolymers, mesoporous materials, mesoporous metals, gold, electrocatalysts
Mesoporous Au films consisting of a network of interconnected Au ligamentsaround ultra-large pores were found to exhibit a promising electrocatalyticactivity towards sluggish reactions. Mesoporous Au films with pore sizes up to25 nm were successfully fabricated using a polymeric micelle approach. Asuperior catalytic activity of the mesoporous Au films towards methanoloxidation was confirmed, which was thoroughly analyzed and compared withthat of other Au materials. An intrinsic investigation on the high catalytic activityrevealed that the superior performance of the as-prepared mesoporous Au filmwas related to its unique atomic structures around the mesopores with wellcrystallizedfacets and several step/kink sites on the Au surfaces. These findingsshowcase a strategic and feasible design for preparing highly active Au-basedcatalysts that could be used as promising candidates in electrocatalyticapplications.
Tsinghua University Press
Cuiling Li,Bo Jiang,Hungru Chen,Masataka Imura,Liwen Sang,Victor Malgras,Yoshio Bando,Tansir Ahamad,Saad M. Alshehri,Satoshi Tominaka,Yusuke Yamauchi, Superior electrocatalytic activity of mesoporous Au film templated from diblock copolymer micelles. NanoRes.2016, 9(6): 1752–1762