Synthesis and Characterization of Magnetic Cobalt-Doped Copper-Iron Nanoparticles for Hydrogen Gas Generation by Catalytic Hydrolysis of NaBH4

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-09-12 DOI:10.1007/s10562-025-05168-5

Deniz Uzunoğlu Doğruyol, Mahmut Tuna Seçilmiş, Güllü Kaplan, Berfin Başak Aktaş, Ayla Özer

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Abstract

The growing demand for sustainable energy has increased interest in hydrogen as an alternative fuel. Among the various hydrogen generation methods, the catalytic hydrolysis of sodium borohydride (NaBH₄) is promising due to its high hydrogen yield and mild conditions. In this study, cobalt-doped copper-iron nanoparticles (Co@Cu-Fe NPs) were synthesized via a wet impregnation method and utilized as catalysts for NaBH₄ hydrolysis. The structural and physicochemical characterizations were performed using SEM, EDX, XRD, XPS, FT-IR, VSM, TGA, and BET. Under optimized conditions (8 wt% Co, 2.1 M NaBH₄, 0.025 g catalyst, 25 °C), a high hydrogen generation rate of 1033 mL/min·g_cat was achieved. Kinetic and thermodynamic analyses showed a 1.17th-order reaction with an activation energy of 59.75 kJ/mol. The mechanism followed the Langmuir–Hinshelwood model, involving stepwise hydroxyl substitution of BH₄⁻. Co@Cu-Fe NPs exhibited competitive performance and magnetic recyclability, making them efficient and cost-effective catalysts for hydrogen production.

Graphical Abstract

Abstract Image

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NaBH4催化水解制氢用磁性钴掺杂铜铁纳米颗粒的合成与表征

对可持续能源日益增长的需求增加了人们对氢作为替代燃料的兴趣。在各种制氢方法中，催化水解硼氢化钠（NaBH4）因其产氢率高、条件温和而具有广阔的应用前景。本研究通过湿浸渍法制备了掺杂钴的铜铁纳米颗粒（Co@Cu-Fe NPs），并将其作为NaBH4水解的催化剂。采用SEM、EDX、XRD、XPS、FT-IR、VSM、TGA、BET等手段进行了结构表征和理化表征。优化条件为：Co浓度为8wt %， NaBH4浓度为2.1 M，催化剂浓度为0.025 g，温度为25°C)，产氢速率为1033 mL/min·gcat。动力学和热力学分析表明，该反应为1.17级反应，活化能为59.75 kJ/mol。其机制遵循Langmuir-Hinshelwood模型，包括BH4的羟基递进取代。Co@Cu-Fe NPs表现出具有竞争力的性能和磁性可回收性，使其成为高效和经济的制氢催化剂。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.