Journal
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
Volume 88, Issue 1, Pages 227-235Publisher
SPRINGER
DOI: 10.1007/s10971-018-4793-9
Keywords
Sol-gel; Molybdenum sulfide; Carbon nanotubes; Aerogel; Hydrogen evolution reaction
Categories
Funding
- National Key Research and Development program [2016YFB0901600]
- NSCF [21303162, 11604295]
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This work reported the preparation of amorphous MoSx aerogel and MoSx/carbon nanotubes composite aerogels by a modified epoxide addition sol-gel method. In this process, propylene epoxide scavenged the protons from a S-H-contained organic acid (dl-Mercaptosuccinic acid) and promoted the interactions between (NH4)(6)Mo7O24 center dot 4H(2)O and the functional groups in the organic acid to form a gel. The sulfur and molybdenum contained a wet gel turned into an amorphous MoSx aerogel after supercritical drying in ethanol. Carbon nanotubes can be further incorporated into the aerogel backbone, which can extend the specific surface area and alter the pore structures in the composite aerogels. Such composite aerogels showed good catalytic performance in electrochemical hydrogen evolution reactions. MoSx aerogels can be prepared by the modified epoxide-adding method and showed good catalytic activity toward HER. [GRAPHICS] .
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