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High photocatalytic activity of a NiO nanodot-decorated Pd/SiC catalyst for the Suzuki-Miyaura cross-coupling of aryl bromides and chlorides in air under visible light
- Source :
- Journal of Catalysis. 389:517-524
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The Suzuki-Miyaura cross-coupling reaction is an effective process for C-C bond formation in organic synthesis. Herein, we report a NiO nanodot-decorated Pd/SiC catalyst, synthesized by atomic layer deposition, which shows high photocatalytic activity for the Suzuki-Miyaura coupling of both aryl bromides and chlorides with phenylboronic acid at 30 °C in air. The Mott-Schottky contact in SiC/Pd enhances the rapid transfer of the photogenerated electrons from SiC to Pd nanoparticles. Moreover, the energy different between the highest occupied molecular orbital of the ultrafine NiO nanodots and the Fermi level of Pd forces a spontaneous electron transfer from NiO to Pd. As a result, the concentrated electrons in the Pd nanoparticles can facilitate the cleavage of C-Br or C-Cl bonds, which normally requires rather high temperatures in thermal processes. The holes left on the SiC support can assist the cleavage of the C-B bond.
- Subjects :
- 010405 organic chemistry
Aryl
Non-blocking I/O
010402 general chemistry
Photochemistry
01 natural sciences
Catalysis
0104 chemical sciences
Electron transfer
Atomic layer deposition
chemistry.chemical_compound
chemistry
Photocatalysis
Nanodot
Physical and Theoretical Chemistry
Phenylboronic acid
Subjects
Details
- ISSN :
- 00219517
- Volume :
- 389
- Database :
- OpenAIRE
- Journal :
- Journal of Catalysis
- Accession number :
- edsair.doi...........3b95fd59e02cbea9fbaffdc66e752788