Synthesis of Bimetallic Nickel-Cobalt Nanoparticles Supported by Functional Multi-Walled Carbon Nanotubes by Chemical Methods: Characterization and Hydrogen Energy Generation

IF 2.8 3区化学 Q2 CHEMISTRY, APPLIED

Topics in Catalysis Pub Date : 2024-01-22 DOI:10.1007/s11244-024-01907-x

Najmeh Zare, Fatemeh Karimi, Elif Esra Altuner, Hussein Mashkoor, Rima Nour Elhouda Tiri, Fulya Gulbagca, Majede Bijad, Ali Cherif, Fatih Sen

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Abstract

In this study, nickel-cobalt@functionalized multi-walled carbon nanoparticles (NiCo@f-MWCNT NPs) were synthesized, analysed, and used for hydrogen generation via methanolysis on NaBH₄. For the NPs synthesis, two steps were conducted (i.e., i: MWCNT was functionalized in an acid medium to support NPs (f-MWCNT); ii: NiCo NPs were synthesized and supplemented with f-MWCNT). Various characterization techniques were used to examine the morphological structure of NiCo@f-MWCNT NPs. The transmission electron microscope (TEM) results showed that the NPs were sized as 3.941 ± 1.094 nm with a spherical structure. The X-ray diffraction analysis (XRD) results indicated an average crystalline size of 1.46 nm. The evaluation of the catalytic performance for hydrogen production revealed that the turnover frequency (TOF) was calculated to be 2934.4 min^− 1 with activation energy (Ea) and enthalpy (∆H) of 39.29 kJ/mol and 36.74 kJ/mol, respectively, which indicates high viability for hydrogen transport and generation application and processes.

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用化学方法合成以功能性多壁碳纳米管为支撑的双金属镍钴纳米粒子：表征与氢能生成

本研究合成、分析了镍-钴@功能化多壁碳纳米粒子（NiCo@f-MWCNT NPs），并将其用于在 NaBH4 上进行甲醇分解制氢。NPs 的合成分为两个步骤（即 i. 将镍钴@f-MWCNT（NiCo@f-MWCNT NPs）官能化； ii：在酸性介质中对 MWCNT 进行功能化，以支持 NPs（f-MWCNT）；ii：合成 NiCo NPs 并用 f-MWCNT 补充）。使用各种表征技术来研究 NiCo@f-MWCNT NPs 的形态结构。透射电子显微镜（TEM）结果表明，NPs 的尺寸为 3.941 ± 1.094 nm，呈球形结构。X 射线衍射分析（XRD）结果表明，平均结晶尺寸为 1.46 nm。对制氢催化性能的评估表明，计算得出的翻转频率（TOF）为 2934.4 min- 1，活化能（Ea）和焓（∆H）分别为 39.29 kJ/mol 和 36.74 kJ/mol，这表明该催化剂在氢气运输和生成应用及过程中具有很高的可行性。

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来源期刊

Topics in Catalysis 化学-物理化学

CiteScore

5.70

自引率

5.60%

发文量

197

审稿时长

2 months

期刊介绍： Topics in Catalysis publishes topical collections in all fields of catalysis which are composed only of invited articles from leading authors. The journal documents today’s emerging and critical trends in all branches of catalysis. Each themed issue is organized by renowned Guest Editors in collaboration with the Editors-in-Chief. Proposals for new topics are welcome and should be submitted directly to the Editors-in-Chief. The publication of individual uninvited original research articles can be sent to our sister journal Catalysis Letters. This journal aims for rapid publication of high-impact original research articles in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.