AI Article Synopsis
- The study introduces a new Cu-based catalyst featuring nanoparticles of Cu, CuO, and CuN on nitrogen-doped carbon, achieving a remarkable hydrogen production rate of 140.1 μmol/g/s at 210 °C.
- Additionally, the catalyst demonstrates long-term stability for 350 hours and works by enhancing water dissociation and conversion reactions at the active Cu-N sites, significantly outperforming traditional catalysts like Cu, Ni, and even Pt.
Article Abstract
Aqueous-phase reforming of methanol represents a promising avenue for hydrogen (H) production. However, developing highly efficient and low-cost nonprecious catalysts remains challenging. Here, we report the synthesis of Cu-based catalysts with Cu, CuO, and CuN nanoparticles anchored on the nitrogen-doped carbon, forming Cu/Cu/Cu-N active sites. This catalyst achieves a H production rate of 140.1 μmol/g/s at 210 °C, which is several times to 2 orders of magnitude higher than that of Cu-, Ni-, even Pt-based catalysts, demonstrating excellent long-term stability over 350 h at 210 °C. A mechanism investigation reveals that the Cu-N site facilitates water dissociation into *OH and improves *CO and *OH conversion, leading to enhanced CO conversion and H production kinetics.
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| http://dx.doi.org/10.1021/acsnano.4c07386 | DOI Listing |
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