We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Cobalt phthalocyanine-based nanodots as efficient catalysts for chemical conversion of CO2 under ambient conditions.
- Authors
Guo, Ding; Zhang, Juan; Liu, Genyan; Luo, Xiaogang; Wu, Fengshou
- Abstract
The chemical fixation of CO2 into epoxides to afford cyclic carbonates has received considerable attention due to the 100% atom economy, which is in accordance with the concept of green chemistry and sustainable development. Here, we develop a facile and high-output strategy to fabricate cobalt phthalocyanine-based nanodots (CoPc-NDs) by the carbonization of citric acid and cobalt phthalocyanine complex. Due to the high thermal stability of phthalocyanine, the macrocycle is well preserved in the core of nanodots under the controlled hydrothermal temperature. The as-prepared CoPc-NDs disperse well in water with a nanoscale size about 70 nm. The morphology and chemical composition of CoPc-NDs are characterized by transmission electron microscopy, dynamic laser scattering, X-ray powder diffraction, X-ray energy spectrum, and absorption spectrum. Compared with the organometallic complex, such as cobalt tetra-nitrophthalocyanine and cobalt tetra-aminophthalocyanine, CoPc-NDs show better catalytic performance for the conversion of epoxides into carbonates. The kinetic experiments of three catalysts are investigated and compared under the same conditions using styrene oxide as substrate. Finally, a tentative mechanism for the catalysis was proposed and described.
- Subjects
COBALT; NANODOTS; X-ray powder diffraction; FISCHER-Tropsch process; STYRENE oxide; CATALYSTS; CARBON dioxide
- Publication
Journal of Materials Science, 2021, Vol 56, Issue 18, p10990
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-021-05964-5