2H‐Au Nanosheet‐Templated Growth of PdFe for Electrocatalytic Methanol Oxidation
Abstract Pd‐based alloy nanomaterials normally crystallize in the conventional face‐centered cubic (fcc) crystal phase. Here, 2H‐Au nanosheets (NSs), possessing 2H crystal phase (2H: hexagonal close‐packed with a stacking sequence of “AB”), are used as templates for the growth of PdFe, during which the 2H‐to‐fcc phase transformation in Au NSs happens, leading to the formation of 2H/fcc Au@PdFe core–shell NSs. By changing the Pd/Fe atomic ratio, the 2H/fcc phase ratio in 2H/fcc Au@PdFe NSs can be tuned accordingly. As a proof‐of‐concept application, the as‐synthesized 2H/fcc Au@Pd 0.66 Fe 0.34 NSs are used as an electrocatalyst for methanol oxidation reaction (MOR) in alkaline media, exhibiting a remarkable mass activity of 4.39 A mg −1 Pd , which is 1.7, 5.4 and 12.9 times that of 2H/fcc Au@Pd 0.56 Fe 0.44 NSs (2.57 A mg −1 Pd ), 2H/fcc Au@Pd 0.40 Fe 0.60 NSs (0.81 A mg −1 Pd ), and Pd black (0.34 A mg −1 Pd ), respectively, placing it among the best of reported Pd‐based MOR electrocatalysts. This strategy, based on phase engineering of nanomaterials (PEN), paves an efficient way to the rational design and controlled synthesis of noble multimetallic nanostructures with unconventional phases for exploring the phase‐dependent properties and applications.
Authors
- Xichen Zhou (ORCID: https://orcid.org/0000-0003-0907-958X)
- Qinbai Yun (ORCID: https://orcid.org/0000-0001-7161-5078)
- Jingtao Huang (ORCID: https://orcid.org/0000-0002-5693-1344)
- Biao Huang (ORCID: https://orcid.org/0000-0001-8553-3962)
- Lin Gu (ORCID: https://orcid.org/0000-0002-7504-031X)
- Lujiang Li (ORCID: https://orcid.org/0000-0003-1579-3739)
- Zhaoning Hu (ORCID: https://orcid.org/0000-0002-3059-3607)
- Wenxin Niu (ORCID: https://orcid.org/0000-0002-0835-3295)
- Hongfei Cheng (ORCID: https://orcid.org/0000-0003-4701-4795)
- Yiyao Ge (ORCID: https://orcid.org/0000-0002-2546-005X)
- Li Zhai (ORCID: https://orcid.org/0000-0001-8564-8065)
- Zhanxi Fan (ORCID: https://orcid.org/0000-0003-3133-6503)
- Qi Yang (ORCID: https://orcid.org/0000-0003-2017-9290)
- Guigao Liu (ORCID: https://orcid.org/0000-0002-0018-1249)
- Qingbo Wa (ORCID: https://orcid.org/0000-0003-1608-3974)
- Bo Chen
- Lixin Wang (ORCID: https://orcid.org/0000-0002-9497-461X)
- Zijian Li (ORCID: https://orcid.org/0000-0002-3107-0568)
- Hua Zhang (ORCID: https://orcid.org/0000-0001-9518-740X)
- An Zhang (ORCID: https://orcid.org/0000-0001-8426-0827)
- Qinyong Zhang (ORCID: https://orcid.org/0000-0003-4735-8758)
- Xiaozhi Liu (ORCID: https://orcid.org/0000-0001-8647-8694)
- Jie Wang (ORCID: https://orcid.org/0000-0002-2997-3450)
Institutions
- Xihua University (CN)
- Tongji University (CN)
- City University of Hong Kong (HK)
- Nanyang Technological University (SG)
- Chinese Academy of Sciences (CN)
- Nanjing University of Science and Technology (CN)
- Changchun Institute of Applied Chemistry (CN)
- City University of Hong Kong, Shenzhen Research Institute (CN)
- Institute of Physics (CN)
- National Laboratory for Superconductivity (CN)
- University of Science and Technology Beijing (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Advanced Functional Materials
- Published
- 2024-09-10
- DOI
- https://doi.org/10.1002/adfm.202405073
- Citations
- 11
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 1.13
Funders
- City University of Hong Kong
- National Natural Science Foundation of China
- Xihua University