Photogenerated singlet oxygen over zeolite-confined carbon dots for shape selective catalysis

Qiu Ying Yu, Guang Yao Zhai, Tian Lu Cui, Hui Su, Zhong Hua Xue, Jun Jun Zhang, Peter J. Pauzauskie, Shin ichi Hirano, Xin Hao Li, Jie Sheng Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Singlet oxygen as an activated oxygen species played an important role in organic synthesis. Suitable catalyst for converting ubiquitous oxygen molecule to singlet oxygen under mild conditions has attracted a wide range of attention. Herein, carbon dots have been confined into mesopores of silicalite-1 nanocrystals framework and acted as active sites for generation of singlet oxygen. The high oxygen-adsorption capacity of zeolite nanocrystals facilitated the photocatalytic generation rate of singlet oxygen, outpacing the free-standing carbon dots for 14-fold. The integrated carbon dot-zeolite nanocrystal hybrid also exhibited a special size-dependent selectivity for organic synthesis by using the in situ formed and confined singlet oxygen as active oxygen species.

Original languageEnglish (US)
Pages (from-to)434-439
Number of pages6
JournalScience China Chemistry
Issue number4
StatePublished - Apr 1 2019


  • carbon dots
  • photocatalysis
  • shape-selective
  • singlet oxygen
  • zeolite

ASJC Scopus subject areas

  • Chemistry(all)


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