Macroporous Inverse Opal-like MoC with Incorporated Mo Vacancies for Significantly Enhanced Hydrogen Evolution.

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ID: 72799
2017
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Abstract
The hydrogen evolution reaction (HER) is one of the most important pathways for producing pure and clean hydrogen. Although platinum (Pt) is the most efficient HER electrocatalyst, its practical application is significantly hindered by high-cost and scarcity. In this work, an MoC with incorporated Mo vacancies and macroporous inverse opal-like (IOL) structure (MoC-IOL) was synthesized and studied as a low-cost efficient HER electrocatalyst. The macroporous IOL structure was controllably fabricated using a facile-hard template strategy. As a result of the combined benefits of the Mo vacancies and structural advantages, including appropriate hydrogen binding energy, large exposed surface, robust IOL structure and fast mass/charge transport, the synthesized MoC-IOL exhibited significantly enhanced HER electrocatalytic performance with good stability, with performance comparable or superior to Pt wire in both acidic and alkaline solutions.
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Authors Li, Feng;Zhao, Xianglong;Mahmood, Javeed;Okyay, Mahmut Sait;Jung, Sun-Min;Ahmad, Ishfaq;Kim, Seok-Jin;Han, Gao-Feng;Park, Noejung;Baek, Jong-Beom;
Journal acs nano
Year 2017
DOI
10.1021/acsnano.7b04205
URL
Keywords
hydrogen evolution mo vacancies binding energy inverse opal molybdenum carbide

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