Porous Cuprous Oxide Nanorod Catalysts

  • Author: ChemistryViews.org
  • Published: 28 December 2018
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Dalton Transactions/Royal Society of Chemistry
  • Associated Societies: Royal Society of Chemistry (RSC), UK
thumbnail image: Porous Cuprous Oxide Nanorod Catalysts

Cuprous oxide (Cu2O) composites can be used to catalyze the hydrogen evolution reaction (HER). Pure Cu2O materials with a good HER catalytic activity, in contrast, are rare.


Yonghong Ni, Anhui Normal University, Wuhu, China, and colleagues have developed a vapor–solid reaction route for the preparation of porous Cu2O nanorods as HER catalysts. The team used Cu(OH)2 nanorods as a precursor and ethylene glycol as a reductant. The Cu(OH)2 nanorods were prepared by combining copper sulfate, ammonia, and sodium hydroxide in water. The resulting precursors and the ethylene glycol were placed in two adjacent open containers in a furnace and heated to 200–280 °C under an argon atmosphere to obtain the desired porous Cu2O nanorods.


The team found that Cu2O nanorods prepared at 200 °C have a much better catalytic activity for the HER than those obtained at higher temperatures. This catalyst has a low overpotential and high durability. The team attributes the good performance to the high surface area and the fast charge transport of the catalyst.


 

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