Facile and innovation synthesis of Zn-Mn-Co-LDH/polypyrrole and its application in investigating ethanol oxidation in an alkaline medium

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications Pub Date : 2024-09-14 DOI:10.1016/j.elecom.2024.107809

Elhameh Saeb , Karim Asadpour-Zeynali , Hossein Dastangoo

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Abstract

Overvoltage and low current are observed for ethanol electrooxidation on the surface of many unmodified electrodes. Therefore, it is desirable to use a suitable catalyst for ethanol electrooxidation to increase the current. This research introduces a new sensor to catalyze ethanol oxidation in an alkaline environment. This new Zn-Mn-Co LDH/PolyPyrrole/GCE nanocomposite sensor exhibits high catalytic activity for ethanol electrooxidation. It changes the oxidation potential of ethanol to a less positive potential. To identify this proposed sensor, X-ray diffraction (XRD), Brauner Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), FT-IR spectroscopy, field emission scanning electron microscopy (FESEM), thermal analysis (TGA), high-resolution transmission electron microscopy (HR-TEM) and cyclic voltammetry techniques were used. Ethanol electrooxidation was investigated by cyclic voltammetry technique. The effects of scan rate and ethanol concentration on the ethanol oxidation peak have been investigated. The proposed sensor showed long-term stability. This prepared nanocomposite can be used as an anode catalyst for ethanol fuel cells.

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Zn-Mn-Co-LDH/polypyrrole 的简便创新合成及其在研究碱性介质中乙醇氧化过程中的应用

在许多未经改性的电极表面上，乙醇电氧化会出现电压过高和电流过低的现象。因此，最好使用合适的乙醇电氧化催化剂来增加电流。本研究介绍了一种在碱性环境中催化乙醇氧化的新型传感器。这种新型 Zn-Mn-Co LDH/PolyPyrrole/GCE 纳米复合传感器具有很高的乙醇电氧化催化活性。它能将乙醇的氧化电位变为较低的正电位。为了鉴定这种拟议的传感器，使用了 X 射线衍射 (XRD)、布劳纳-艾美特-泰勒 (BET)、X 射线光电子能谱 (XPS)、傅立叶变换红外光谱、场发射扫描电子显微镜 (FESEM)、热分析 (TGA)、高分辨率透射电子显微镜 (HR-TEM) 和循环伏安技术。乙醇电氧化采用循环伏安技术进行研究。研究了扫描速率和乙醇浓度对乙醇氧化峰的影响。所提出的传感器具有长期稳定性。所制备的纳米复合材料可用作乙醇燃料电池的阳极催化剂。

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来源期刊

Electrochemistry Communications 工程技术-电化学

CiteScore

8.50

自引率

3.70%

发文量

160

审稿时长

1.2 months

期刊介绍： Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.