Loading...
Please wait, while we are loading the content...
Formation Mechanism of Carbon-Supported Hollow PtNi Nanoparticles via One-Step Preparations for Use in the Oxygen Reduction Reaction
| Content Provider | MDPI |
|---|---|
| Author | Kim, Dong-Gun Sohn, Yeon Sun Jang, Injoon Yoo, Sung Jong Kim, Pil |
| Copyright Year | 2022 |
| Description | Hollow Pt-based nanoparticles are known to possess the properties of high electrocatalytic activity and durability. Nonetheless, their practical applications as catalytic materials are limited because of the requirement for exhaustive preparation. In this study, we prepared carbon-supported hollow $PtNi_{x}$ (x = the moles of the Ni precursor to the Pt precursor in the catalyst preparation step) catalysts using a one-step preparation method, which substantially reduced the complexity of the conventional method for preparing hollow Pt-based catalysts. In particular, this hollow structure formation mechanism was proposed based on extensive characterizations. The prepared catalysts were examined to determine if they could be used as electrocatalysts for the oxygen reduction reaction (ORR). Among the investigated catalysts, the acid-treated hollow $PtNi_{3}$/C catalyst demonstrated the best ORR activity, which was 3 times higher and 2.3 times higher than those of the commercial Pt/C and acid-treated particulate $PtNi_{3}$/C catalysts, respectively. |
| Starting Page | 513 |
| e-ISSN | 20734344 |
| DOI | 10.3390/catal12050513 |
| Journal | Catalysts |
| Issue Number | 5 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-04 |
| Access Restriction | Open |
| Subject Keyword | Catalysts Anesthesiology Pt-based Catalysts Hollow Ptni Alloy Nanoparticles Galvanic Displacement Reaction Oxygen Reduction Reaction |
| Content Type | Text |
| Resource Type | Article |
