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Morphology dependent activity of PbS nanostructures for electrochemical sensing of dopamine
Materials Letters ( IF 3 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.matlet.2020.127333
Rama Gaur

Abstract The present study reports synthesis of lead sulfide nanostructures by a facile thermal decomposition approach. Morphology dependent electrochemical characteristics have been investigated using cyclic voltammetry. PbS dendrites exhibit higher redox peak current and smaller peak potential separation compared to PbS nanocubes. Enhanced redox current, reduced peak potential, well-defined and stable redox wave indicate high electrocatalytic activity of PbS nanostructures towards dopamine. The crystallite size of dendrites and nanocubes was found to be 18.9 nm and 50.8 nm. The surface area of electrodes increased multi-fold on modification with PbS nanostructures (9.7 mm2) compared to bare electrode (1.2 mm2).

中文翻译:

PbS 纳米结构对多巴胺电化学传感的形态依赖性活性

摘要 本研究报告了通过简便的热分解方法合成硫化铅纳米结构。已经使用循环伏安法研究了依赖于形态的电化学特性。与 PbS 纳米立方体相比,PbS 枝晶表现出更高的氧化还原峰值电流和更小的峰值电位分离。增强的氧化还原电流、降低的峰值电位、明确且稳定的氧化还原波表明 PbS 纳米结构对多巴胺的高电催化活性。发现枝晶和纳米立方体的微晶尺寸分别为 18.9 nm 和 50.8 nm。与裸电极 (1.2 mm2) 相比,使用 PbS 纳米结构 (9.7 mm2) 进行修饰后,电极的表面积增加了多倍。
更新日期:2020-04-01
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