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Single-wall carbon nanotube chemical attachment at platinum electrodes

机译:铂电极上的单壁碳纳米管化学附着

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Self-assembled monolayer (SAM) techniques were used to adsorb 4-aminothiophenol (4-ATP) on platinum electrodes in order to obtain an amino-terminated SAM as the base for the chemical attachment of single-wall carbon nanotubes (SWCNTs). A physico-chemical, morphological and electrochemical characterizations of SWCNTs attached onto the modified Pt electrodes was done by using reflection-absorption infrared spectroscopy (RAIR), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and cyclic voltammetry (CV) techniques. The SWNTs/4-ATP/Pt surface had regions of small, medium, and large thickness of carbon nanotubes with heights of 100-200 nm, 700 nm to 1.5 靘, and 1.0-3.0 靘, respectively. Cyclic voltammetries (CVs) in sulfuric acid demonstrated that attachment of SWNTs on 4-ATP/Pt is markedly stable, even after 30 potential cycles. CV in ruthenium hexamine was similar to bare Pt electrodes, suggesting that SWNTs assembly is similar to a closely packed microelectrode array.
机译:为了获得氨基端基的SAM作为单壁碳纳米管(SWCNT)化学附着的基础,使用了自组装单层(SAM)技术将4-氨基硫酚(4-ATP)吸附在铂电极上。通过使用反射吸收红外光谱(RAIR),X射线光电子能谱(XPS),拉曼光谱,扫描电子显微镜(SEM),原子,对附着在修饰的Pt电极上的SWCNT进行了物理,化学和形态学表征力显微镜(AFM)和循环伏安法(CV)技术。 SWNTs / 4-ATP / Pt表面具有小,中和大厚度的碳纳米管区域,高度分别为100-200 nm,700 nm至1.5靘和1.0-3.0 height。硫酸中的循环伏安法(CV)表明,即使在30个可能的循环后,SWNT在4-ATP / Pt上的附着也非常稳定。钌六胺中的CV类似于裸露的Pt电极,表明SWNTs的组装类似于紧密堆积的微电极阵列。

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