比较电化学沉积法和旋涂法作为电极改性方法在臭氧生成和染料分解中的应用

IF 2.8 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Sudabeh Dalirnasab, Ali Benvidi, Abbas Behjat, Marzieh Dehghan Tezerjani
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引用次数: 0

摘要

在电化学臭氧生产领域,电极需要具有卓越的催化活性、长期稳定性和成本效益。在这种情况下,TiO2-NTs/SnO2-Sb2O5-NiO 电极的制造结合了阳极氧化、电化学沉积、旋涂和退火技术。使用 EDS、XRD 和 SEM 技术对电极涂层进行了分析。根据所获得的循环伏安 (CV) 数据,与其他构建的电极相比,TiO2-NTs/SnO2-Sb2O5-NiO 电极的氧演化正电位较低。将 Ti 转化为 Ti-NTs 提高了臭氧生产效率,并产生了更高浓度的水溶性臭氧。为了评估电极的性能和相应的电催化活性,使用了一种纺织染料作为污染物。事实证明,最有效的改性电极在 60 分钟内对阳离子黄色 28 染料的分解率高达 96%。此外,在 60 分钟的电解过程中,这种改性电极还能大幅去除高达 53.6% 的化学需氧量(COD)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Comparison of electrochemical depositing and spin coating methods as electrode modification methods in order to ozone production and dye decomposition

Comparison of electrochemical depositing and spin coating methods as electrode modification methods in order to ozone production and dye decomposition

Comparison of electrochemical depositing and spin coating methods as electrode modification methods in order to ozone production and dye decomposition

In the field of electrochemical ozone production, electrodes need to have exceptional catalytic activity, long-term stability, and cost-effectiveness. In this case, TiO2-NTs/SnO2-Sb2O5-NiO electrodes were fabricated using a combination of anodization, electrochemical deposition, spin coating and annealing techniques. The coating of electrodes was analyzed using EDS, XRD and SEM techniques. According to the obtained cyclic voltammetry (CV) data, the TiO2-NTs/SnO2-Sb2O5-NiO electrode revealed a less positive potential for oxygen evolution compared to other constructed electrodes. The conversion of Ti to Ti-NTs improved the ozone production efficiency and resulted in higher concentrations of water-soluble ozone. To evaluate the performance of the electrodes and the corresponding electrocatalytic activity, a textile dye was used as a pollutant. The most effective modified electrode proved to have an impressive decomposition rate of 96% for the cationic yellow 28 dye within a 60-min timeframe. Furthermore, this modified electrode could substantially remove chemical oxygen demand (COD) of up to 53.6% during 60-min electrolysis.

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来源期刊
CiteScore
5.70
自引率
18.20%
发文量
229
审稿时长
2.6 months
期刊介绍: Research on Chemical Intermediates publishes current research articles and concise dynamic reviews on the properties, structures and reactivities of intermediate species in all the various domains of chemistry. The journal also contains articles in related disciplines such as spectroscopy, molecular biology and biochemistry, atmospheric and environmental sciences, catalysis, photochemistry and photophysics. In addition, special issues dedicated to specific topics in the field are regularly published.
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