期刊

Journal of Materials Chemistry A

标题

A reusable dual functional Mo2C catalyst for rapid hydrogen evolution by Mg hydrolysis

作者

Kashif Naseem, Hao Zhong, Wenbin Jiang, Mili Liu, Chengguang Lang,  Kang Chen, Liuzhang Ouyang and Jianmei Huang

摘要

Room-temperature hydrogen generation by Mg hydrolysis provides an economical strategy for on-site hydrogen supply with high capacity and environmentally friendly by-products. However, slow reaction kinetics hinders the upscaling of this technology. In this study, a low-cost Mo2C catalyst was ball milled with Mg to produce a Mg–Mo2C composite, which can be easily scaled up for manufacturing. The resulting composite exhibited rapid hydrolysis in seawater, generating over 851 mL g−1 hydrogen in 10 min. Moreover, Mo2C maintained a high catalytic activity after recycling, and a hydrogen yield of over 90% after five cycles. The catalytic mechanism study indicated that the micro galvanic cell and well-combined Mg–Mo2C interface formed during ball milling significantly enhanced the hydrolysis performance. Therefore, this work provides a cost-efficient and easy scale-up strategy for modifying Mg hydrolysis kinetics and opens new avenues for studying the relationship between material hydrolysis and hydrogen evolution reaction catalysts.

原文链接

https://pubs.rsc.org/en/content/articlelanding/2023/ta/d3ta02163g