Development of the sensitivity of nanostructured platinum electrodes by effect modified by adatoms (As, Sb, Pb and Sn) for electrocatalytic properties

IF 2.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of the Iranian Chemical Society Pub Date : 2024-08-08 DOI:10.1007/s13738-024-03064-0
Ahmad Khalf Alkhawaldeh, Iyad Y. Natsheh, Majd M. Alsaleh, Mohamad Shatnawi, Wesam Shahrour, Majdi M. Majdalawi, Ali Ata Alsarhan
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Abstract

Adatoms on metallic surfaces appear to be inexpensive reversible surface alloys. Platinum nanostructured electrode (PtNPs) opens up new avenues in electrochemistry. The prepared platinum nanostructured on a tantalum substrate using a square wave potential regime was permitted to maintain an open circuit via a 1 × 10–3 M solution that included an ion of one element Sb, Sn, As, or Pb. As a result, the closeness of the permanently adsorbed adatoms on the previously described Pt-nanostructured electrodes was proved by energy-dispersive X-ray spectroscopy, cyclic voltammetry and scanning electron microscopy. The electrocatalytic properties of prepared adatoms on new platinum nanostructures deposited on tantalum supporting structures were tested by the examination of electrooxidation of formic acid and methanol in 0.5 M H2SO4. The results of the previously mentioned tools showed the electrocatalytic characteristics of the nanoparticles ready exterior were improved by the adatoms of the four systems with varying levels of progress. The optimum conditions were set at 100 Hz frequency,  − 0.4 V, and 0.0 V below the square wave limits in addition, above at amplitude 0.4 V, to prepare nanostructured platinum deposits. The current peak (Ip) and the current of chronoamperometric (ICA) of HCOOH solution oxidation on Pt-nanostructured Snad (47 mAcm−2, 130 µAcm−2) have higher values than Asad (20 mAcm−2, 55 µAcm−2), Sbad (34 mAcm−2, 100 µAcm−2) and Pbad (24 mAcm−2, 30µAcm−2)-Pt electrode.

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用金刚原子(As、Sb、Pb 和 Sn)修饰纳米结构铂电极,提高其电催化性能的灵敏度
金属表面的原子似乎是廉价的可逆表面合金。纳米铂电极(PtNPs)为电化学开辟了新途径。在钽基底上使用方波电位机制制备的纳米铂电极可通过 1 × 10-3 M 溶液保持开路,该溶液包含一种 Sb、Sn、As 或 Pb 元素的离子。因此,能量色散 X 射线光谱法、循环伏安法和扫描电子显微镜证明了之前描述的铂纳米结构电极上永久吸附的吸附原子的紧密性。通过检测 0.5 M H2SO4 中甲酸和甲醇的电氧化作用,测试了沉积在钽支撑结构上的新型铂纳米结构上制备的原子的电催化特性。前述工具的结果表明,四种体系的金刚原子以不同程度的进步改善了纳米颗粒外部准备就绪的电催化特性。最佳条件设定为频率 100 Hz、- 0.4 V 和低于方波极限 0.0 V,此外,高于振幅 0.4 V,以制备纳米结构的铂沉积物。铂纳米结构 Snad(47 mAcm-2,130 µAcm-2)电极上 HCOOH 溶液氧化的电流峰值(Ip)和计时器电流(ICA)均高于 Asad(20 mAcm-2,55 µAcm-2)、Sbad(34 mAcm-2,100 µAcm-2)和 Pbad(24 mAcm-2,30 µAcm-2)-铂电极。
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CiteScore
4.40
自引率
8.30%
发文量
230
审稿时长
5.6 months
期刊介绍: JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.
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