Journal
ACS CATALYSIS
Volume 4, Issue 8, Pages 2658-2661Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cs5005294
Keywords
molybdenum carbide nanoparticles; graphitic carbon sheets; biopolymer; electrocatalysts; hydrogen generation
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Funding
- National Natural Science Foundation of China [21175129]
- National Basic Research Program of China [2011CB935800]
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The present work reports on the preparation of Mo2C nanoparticles decorated graphitic carbon sheets (Mo2C/GCSs) via a biopolymer-derived solid-state reaction between (NH4)(6)Mo7O24 center dot 4H(2)O and sodium alginate at 900 degrees C under Ar. As a novel hydrogen evolution reaction electrocatalytst, the Mo2C/GCSs hybrids exhibit high activity in acidic solutions with an onset potential of 120 mV, a Tafel slope of 62.6 mV dec(-1), and an exchange current density of 12.5 x 10(-3) mA cm(-2). Moreover, such Mo2C/GCSs catalysts also show excellent durability during long-term 3000 cycles.
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