材料科学
制氢
纳米孔
催化作用
氢氧化物
纳米片
化学工程
石墨烯
纳米技术
化学
有机化学
工程类
作者
Sun Woo Jang,Soumen Dutta,Amit Kumar,Yu‐Rim Hong,Hanuel Kang,Shinbi Lee,Sunmin Ryu,Wonyong Choi,In Su Lee
出处
期刊:ACS Nano
[American Chemical Society]
日期:2020-07-27
卷期号:14 (8): 10578-10588
被引量:69
标识
DOI:10.1021/acsnano.0c04628
摘要
Next-generation electrocatalysts with smart integrated designs, maximizing the chemical cascade synergy for sustainable hydrogen production, are needed to address the urgent environmental threats, but scalable synthesis of precisely architectured nanohybrids rendering a few-nanometer interfacial controllability to augment the catalytic reactivity and operational stability is a major bottleneck. Herein, by inventing a surface-confined lateral growth of nanometer-thin and nanoporous two-dimensional (2D)-Pt on NiFe-LDH nanosheets, a highly reactive 2D–2D interfacially integrated nanoplatform is synthesized for an alkaline hydrogen evolution reaction (HER) which not only extracts high Pt-atomic utilization efficiency but also synergistically accelerates the water dissociation and hydrogen generation cascade on the colocalized Pt/M(OH)x active sites, endowing a 6.1-fold higher Pt mass activity than 20% Pt/C and also empowers a record-high HER operational stability for 50 h, due to the chemically enforced lamellar architecture. This work offers a gateway to produce active metal nanosheets tailored with a suitable active-template surface in order to invent and enforce futuristic catalysis technologies.
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