Electrochemical Growth of Copper Crystals on SPCE for Electrocatalysis Nitrate Reduction.

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Nanomaterials Pub Date : 2024-10-24 DOI:10.3390/nano14211704

Roberta Farina, Giuseppe D'Arrigo, Alessandra Alberti, Giuseppe E Capuano, Domenico Corso, Giuseppe A Screpis, Maria Anna Coniglio, Guglielmo G Condorelli, Sebania Libertino

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Abstract

Copper is efficient, has a high conductivity (5.8 × 10⁷ S/m), and is cost-effective. The use of copper-based catalysts is promising for the electrocatalytic reduction of nitrates. This work aims to grow and characterize copper micro-crystals on Screen-Printed Electrodes (SPEs) for NO₃^- reduction in water. Copper micro-crystals were grown by cyclic voltammetry. Different cycles (2, 5, 7, 10, 12, 15) of copper electrodeposition were investigated (potential ranges from -1.0 V to 0.0 V, scan rate of 0.1 V s^-1). Electrodeposition generated different morphologies of copper crystals on the electrodes, as a function of the number of cycles, with various performances. The presence of numerous edges and defects in the copper micro-crystal structures creates highly reactive active sites, thus favoring nitrate reduction. The manufactured material can be successfully employed for environmental applications.

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在 SPCE 上电化学生长铜晶体，用于电催化硝酸盐还原。

铜具有高效、高导电率（5.8 × 107 S/m）和成本效益高的特点。使用铜基催化剂进行硝酸盐的电催化还原很有前景。本研究的目的是在丝网印刷电极（SPE）上生长铜微晶并对其进行表征，以用于还原水中的 NO3-。铜微晶是通过循环伏安法生长的。研究了铜电沉积的不同周期（2、5、7、10、12、15）（电位范围为 -1.0 V 至 0.0 V，扫描速率为 0.1 V s-1）。随着循环次数的增加，电沉积在电极上产生了不同形态的铜晶体，其性能也各不相同。铜微晶结构中存在的大量边缘和缺陷形成了高活性活性位点，从而有利于硝酸盐的还原。制造出的材料可成功应用于环境领域。

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来源期刊

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.