Abstract
We have successfully synthesized monodisperse core-shell Cu-Pt particles through a solvothermal method that enables control of the shell thickness to enhance the exposed Pt surface area and maintain a narrow size distribution. The core-shell Cu-Pt particles were tested as catalysts for the oxygen reduction reaction and showed promising catalytic properties. Postcatalysis analysis showed that most particles remain stable after catalysis. In situ electron microscopy demonstrates the remarkable stability of the sample in an oxidizing environment. It also visualizes the degradation mechanisms in oxidative conditions as being segregation of Pt and Cu oxide and the loss of the core-shell configuration. These core-shell Cu-Pt particles have the potential to improve the effectiveness of costly metals used in surface reactions for heterogeneous catalysis.
| Original language | English |
|---|---|
| Pages (from-to) | 8758-8764 |
| Number of pages | 7 |
| Journal | Chemistry of Materials |
| Volume | 35 |
| Issue number | 20 |
| DOIs | |
| State | Published - Oct 24 2023 |
| Externally published | Yes |
Funding
This work was funded in part by Semiconductor Research Corporation (SRC). This work was supported by the Office of Naval Research (ONR) MURI through Grant No. N00014-17-1-2661. This work was carried out with the use of facilities and instrumentation supported by NSF through the Massachusetts Institute of Technology Materials Research Science and Engineering Center DMR - 1419807. This project was carried out in part through the use of MIT.nano’s facilities. This work was also supported as part of the Integrated Mesoscale Architectures for Sustainable Catalysis (IMASC), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award #DE-SC0012573. This work was carried out in part at the Singh Center for Nanotechnology, which is supported by the NSF National Nanotechnology Coordinated Infrastructure Program under grant NNCI-2025608. Additional support to the Nanoscale Characterization Facility at the Singh Center has been provided by the Laboratory for Research on the Structure of Matter (MRSEC) supported by the National Science Foundation (DMR-1720530).
| Funders | Funder number |
|---|---|
| Laboratory for Research on the Structure of Matter | |
| Massachusetts Institute of Technology Materials Research Science and Engineering Center | DMR - 1419807 |
| National Science Foundation | DMR-1720530 |
| National Science Foundation | |
| Office of Naval Research | |
| U.S. Department of Energy | |
| Semiconductor Research Corporation | |
| Office of Science | |
| Basic Energy Sciences | -SC0012573, NNCI-2025608 |
| Basic Energy Sciences | |
| Materials Research Science and Engineering Center, Harvard University | |
| Multidisciplinary University Research Initiative | N00014-17-1-2661 |
| Multidisciplinary University Research Initiative |