High-Dimensional Nb<sub>2</sub>O<sub>5</sub> with NbO<sub>6</sub> Octahedra for Efficient Electrocatalytic Upgrading of Methanol to Formate
Facilitating the selective electrochemical oxidation of methanol into value-added formate is essential for electrochemical refining. Here we propose a high-dimensional Nb<sub>2</sub>O<sub>5</sub> on Ni foam (Nb<sub>2</sub>O<sub>5</sub>-HD@NF) composite as anode for methanol oxidation reaction (MOR) for efficient production of formate. In an electrolyte containing 3 M methanol aqueous solution, the Nb<sub>2</sub>O<sub>5</sub>-HD@NF anode requires only 240 mV overpotential to deliver an industrial-level current density of 100 mA cm<sup>-2</sup> with a formate Faraday efficiency of 100%. <i>In situ</i> Raman and electrochemical kinetic analyses reveal that the origin of the excellent activity in 3 M methanol electrolyte can be ascribed to the NbO<sub>6</sub> octahedra as active sites and the Lewis acid sites on the surface of Nb<sub>2</sub>O<sub>5</sub>-HD. This work may pave a way for the design of non-noble metal electrocatalysts with surface acidity engineering for the effective electrocatalytic upgrading of biomass molecules.
Authors
- Tamao Ishida
- Toru Murayama (ORCID: https://orcid.org/0000-0001-5105-3290)
- Chuqian Xiao
- Ying Zhang (ORCID: https://orcid.org/0000-0002-6910-273X)
- Yuhang Li (ORCID: https://orcid.org/0000-0003-4086-0323)
- Xuelin Wang (ORCID: https://orcid.org/0000-0001-5750-6035)
- M. C. Lin (ORCID: https://orcid.org/0000-0001-8056-6976)
- Guangli Xiu (ORCID: https://orcid.org/0000-0002-1122-331X)
- Yuanming Xie (ORCID: https://orcid.org/0009-0007-5798-7407)
- Chunqi Yang
Institutions
- Jiangnan University (CN)
- East China University of Science and Technology (CN)
- Hokkaido University (JP)
- Shanghai Institute of Pollution Control and Ecological Security
- Tokyo Metropolitan University (JP)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2024-08-15
- DOI
- https://doi.org/10.1021/acsami.4c09776
- Citations
- 3
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.31
Funders
- Tokyo Metropolitan Government
- National Natural Science Foundation of China
- Hokkaido University
- Japan Society for the Promotion of Science
- National Key Research and Development Program of China