Ir-Alloyed Ultrathin Ternary PdIrCu Nanosheet-Constructed Flower with Greatly Enhanced Catalytic Performance toward Formic Acid Electrooxidation
| Autor: | Yue Chen, Zhi Liang Zhao, Yan Yan Chang, Lian Ying Zhang, Hong Ming An, Chang Ming Li |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Formic acid 02 engineering and technology Electronic structure 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Mass activity 0104 chemical sciences Catalysis chemistry.chemical_compound Pulmonary surfactant chemistry Chemical engineering General Materials Science 0210 nano-technology Ternary operation Nanosheet |
| Zdroj: | ACS Applied Materials & Interfaces. 10:41293-41298 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.8b13361 |
| Popis: | Ternary metal-element alloys have been reported as efficient electrocatalysts toward various electrochemical reactions, but a unique three-dimensional (3D) Ir-alloyed ternary nanosheet-composed flower (NCF) structure has not been explored yet. Herein, an innovated 1.8 nm Ir-alloyed ultrathin ternary PdIrCu NCF structure is synthesized via one-pot solvothermal reduction without using any surfactant. The as-prepared PdIrCu/C NCF catalyst remarkably improves the stability than commercial Pd/C toward formic acid electrooxidation while resulting in significantly increased mass activity. The improvement of electrocatalytic properties depends on the introduction of Ir and Cu atoms, which greatly prevented poisoning from CO while modifying the electronic structure of Pd for increased reaction active sites and accelerated charge-transfer rate as well as facilitated mass transport by ultrathin NCF 3D structure. Therefore, this catalyst possesses a promising application prospect in electrochemical energy storage/conversion systems. |
| Databáze: | OpenAIRE |
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