김종호
2019-04-23T08:10:27Z
2019-04-23T08:10:27Z
2016-08
JOURNAL OF MATERIALS CHEMISTRY A, v. 4, No. 38, Page. 14796-14803
2050-7488
2050-7496
http://pubs.rsc.org/-/content/articlehtml/2016/ta/c6ta04278c
https://repository.hanyang.ac.kr/handle/20.500.11754/102642
It is of great interest to modulate the photocatalytic activity of nanomaterials by varying their composition at the atomic scale and their nanostructure. Herein, we demonstrate a bottom-up approach for the synthesis of MoSx-doped hollow carbon dots ((MoS)HCDs) as a photocatalyst for the visible light-driven aerobic oxidative coupling of amines. The molecular oxygen-assisted solvothermal reaction of a MoS2 nanosheets/N-methyl-2-pyrrolidone dispersion provided (MoS)HCDs with a unique hollow interior of 6-7 nm as well as with doping of a large portion of pyridinic N atoms and MoSx. As compared to typical carbon dots not bearing hollow structures, the as-prepared (MoS)HCDs exhibited excellent photocatalytic activity in the oxidative coupling reactions of various amines under visible light irradiation at 25 degrees C. Mechanistic investigations suggested that doping with pyridinic N atoms and MoSx was responsible for the significantly improved photocatalytic activity of (MoS)HCDs in photocatalysis. The reaction mechanism of the oxidative coupling reactions of amines that were effectively promoted by (MoS)HCDs under visible light irradiation was also fully examined.
This work was supported by the Basic Science Research Program (NRF-2014R1A2A1A11051877 and 2008-0061891) of the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT and Future Planning. It was also supported by the Human Resources Development program (No. 20154030200680) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), through a grant funded by the Korea government Ministry of Trade, Industry and Energy.
en_US
ROYAL SOC CHEMISTRY
GRAPHENE QUANTUM-DOTS
SELECTIVE OXIDATION
ORGANIC-SYNTHESIS
AMINES
IMINES
REDUCTION
EMISSION
PHOTOLUMINESCENCE
NANOPARTICLES
EXFOLIATION
Oxygen-mediated formation of MoSx-doped hollow carbon dots for visible light-driven photocatalysis
Article
38
4
10.1039/c6ta04278c
14796-14803
JOURNAL OF MATERIALS CHEMISTRY A
Park, J.H
Raza, F
Jeon, SJ
Yim, DB
Kim, HI
Kang, TW
Kim, J.H
2016000167
E
COLLEGE OF ENGINEERING SCIENCES[E]
DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING
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