Efficient Conversion of Seawater Vapor to Hydrogen Using Cu–Fe/Al2O3 Catalysts Assisted by Non-thermal Plasma

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-08-28 DOI:10.1007/s10562-025-05152-z

Yuhang Zhong, Hui Xu, Zhiguo Li, Yuqi Zhang, Jianyuan Hou, Yuan Yuan, Xingang Liu, Renxi Zhang

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Abstract

This study demonstrates an innovative approach for green and efficient hydrogen production from seawater, utilizing Cu–Fe/Al₂O₃ catalysts coupled with a dielectric barrier discharge (DBD) system. The catalytic performance was systematically evaluated under varying voltages and Cu/Fe ratios in a DBD reactor to optimize hydrogen production efficiency. Subsequent investigations focused on humidity and gas flow rate effects using the optimal catalyst (Cu/Fe/Al₂O₃ = 2:1:9). Multimodal characterization (XRD, XPS, FTIR, OES) combined with DFT calculations revealed the mechanistic role of Cu–Fe/Al₂O₃ in plasma-driven hydrogen generation. The synergistic interaction between Fe and Cu enhanced hydroxyl/hydrogen radical generation through improved adsorption, thereby boosting hydrogen evolution efficiency and yield. The optimized system achieved a maximum hydrogen yield of 7.4 g/kWh at 3 kV operating voltage, 3 L/min argon flow, and 100% relative humidity, establishing an energy-efficient pathway for sustainable hydrogen production from seawater.

Graphical Abstract

Abstract Image

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非热等离子体辅助Cu-Fe /Al2O3催化剂高效转化海水水蒸气为氢

该研究展示了一种利用Cu-Fe /Al2O3催化剂和介质阻挡放电（DBD）系统从海水中绿色高效制氢的创新方法。系统评价了DBD反应器在不同电压和Cu/Fe比下的催化性能，以优化其产氢效率。随后的研究重点是使用最佳催化剂（Cu/Fe/Al2O3 = 2:1:9）对湿度和气体流速的影响。多模态表征（XRD， XPS， FTIR， OES）结合DFT计算揭示了Cu-Fe /Al2O3在等离子体驱动制氢中的机制作用。Fe和Cu之间的协同作用通过改善吸附增强羟基/氢自由基的生成，从而提高析氢效率和产率。优化后的系统在3kv工作电压、3l /min氩气流量和100%相对湿度下的最大产氢量为7.4 g/kWh，为可持续的海水制氢建立了节能途径。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.