Designing Hierarchical Porous Amorphous MoC<sub><i>x</i></sub> Nanoflowers for Efficient Electrocatalysis.
basic_science · Level V
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- Record sourced from PubMed, PMID 41493915.
- Also identified by DOI 10.1021/acsnano.5c17916.
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Abstract
Transition metal carbides (TMCs) have emerged as highly promising candidates for catalytic applications. However, achieving synergistic modulation of their crystalline phase and hierarchical pore structure─a critical factor for stabilizing active sites and enhancing catalytic activity─remains a formidable challenge. Herein, we develop a self-sacrificial template strategy for synthesizing nanoflower-like amorphous molybdenum carbide (NF a-MoC<sub><i>x</i></sub>) with a controlled architecture. This approach enables the creation of a hierarchical micro/mesoporous structure that enlarges the surface area while establishing a favorable reaction microenvironment for efficient mass transport. As a proof of concept, the amorphous structure of NF a-MoC<sub><i>x</i></sub> serves as an ideal support to achieve effective regulation of the particle size and uniform dispersion of Pt nanoparticles (2 nm), resulting in a power density of 117.67 mW cm<sup>-2</sup> in Zn-air energy devices.