Ultrathin Co0.85Se nanosheet cocatalyst for visible-light CO2 photoreduction

Bao Pan, Yu Wu, Jiani Qin, Chuanyi Wang

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


Ultrathin Co0.85Se nanosheets were prepared via a facile solvothermal method, which successfully overcome the disadvantage of insufficient active sites in bulk Co0.85Se by reducing its thickness into the atomic scale. Co0.85Se nanosheets have been found to be efficient cocatalysts for photocatalytic CO2 reduction with TON as high as 58 in 1 h reaction under visible-light irradiation. Compared with bulk Co0.85Se blocks, the ultrathin nanosheet samples exhibited nearly 2.5 times higher activity in CO2 photoreduction. The metal-like character and ultrathin 2D structure of Co0.85Se nanosheets support the superb charges transfer and rich CO2 adsorption sites exposure for surface catalysis. A relationship between the surface structure and the cocatalytic activity was established. These results not only demonstrate the potential of a notable, affordable and earth-abundant CO2 photoreduction cocatalyst based on ultrathin Co0.85Se nanosheets but also provide a guidance in the exploration of excellent active and durable cocatalysts/catalysts to replace noble metals for artificial photosynthesis.

Original languageEnglish
Pages (from-to)208-213
Number of pages6
JournalCatalysis Today
StatePublished - 1 Sep 2019
Externally publishedYes


  • CO reduction
  • CoSe nanosheets
  • Cocatalyst
  • Photocatalysis

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry


Dive into the research topics of 'Ultrathin Co0.85Se nanosheet cocatalyst for visible-light CO2 photoreduction'. Together they form a unique fingerprint.

Cite this