10.1002/chem.201804922
Chemistry - A European Journal
FULL PAPER
In summary, the mesoporous double-shelled hollow
dodecahedral microreactors composed of N-doped C coated
ultrafine In2O3 nanoparticles (N-C/In2O3 HD) had been
successfully synthesized by the thermolysis of dodencahedral
In-based framworks in Ar atmosphere. The obtained N-C/In2O3
HD, acted as a microreactor, exhibited excellent catalytic activity
toward photocatalytic oxidative hydroxylation of a series of
arylboronic acids substrates, attributed to the enhanced optical
absorption and efficient separation of photo-generated electron-
hole pairs endowed by the unique structure and uniformly
coated N-doped C layers. In the further research, we found that
O2∙- was the critical active species in the photocatalytic oxidative
hydroxylation of arylboronic acids. The microscopic charge
carrier migration path via In2O3/N-doped graphite interfaces was
revealed by theoretical calculation, i.e., the photo-generated
electrons from hybrid states of In2O3, composed of In 5s and 2p
orbitals, transferred into the hybrid states of N-doped graphite,
composed of C 2p and N 2p orbitals. We believe that the
method described in this paper provides a simple yet effective
route to rationally design of delicate micro-/nanoreactors for
applications beyond photocatalysis.
washed with fresh CH2Cl2 three times. Finally, the recycled catalyst was
dried in a vacuum at 60 °C overnight.
Acknowledgements
This work was supported by the National Natural Science
Founda-tion of China (Grant No. 21671085, 21701063), the
Jiangsu Prov-ince Science Foundation for Youths (BK20150237),
the Natural Science Foundation of Jiangsu Province
(BK20161160), the Project Funded by the Priority Academic
Program Development of Jiangsu Higher Education Institutions,
the Graduate Education Innovation Project of Jiangsu Province
(KYCX17_1585).
Keywords: In2O3 • N-doped C • microreactor • nanoparticle •
photocatalysis
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