Liu Mengzhu, Wang Yongpeng, Zhang Haibo, Jiang Zhenhua
College of Materials Science and Engineering, Jilin Institute of Chemical Technology Jilin 132022 People's Republic of China
National and Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, Jilin University Changchun People's Republic of China.
RSC Adv. 2019 Feb 25;9(12):6613-6619. doi: 10.1039/c8ra09749f. eCollection 2019 Feb 22.
Benefitting from the carboxylic functional group, the high performance polymer PCA-PAEK was first used as a template to produce 3-D rope-like CuO micro-nanofiber (CuO-MNF) network films electrospinning and subsequent calcination. FT-IR proved the ion exchange reaction between the template and Cu ions, and demonstrated the final structure of CuO when combined with EDX and XRD spectra. SEM and TGA revealed the small amount of Cu immobilized on the template, resulting in small diameter (348 nm), short length and 3-D network structure of the CuO-MNFs. The CuO-MNFs were then investigated in detail for direct electrocatalytic oxidation of glucose, which was evaluated using cyclic voltammetry and chronoamperometry. Results revealed a higher sensitivity, faster response and better anti-interference than CuO-MNFs produced from traditional templates at +0.40 V. The improved performance was ascribed to the high surface-to-volume ratio and the excellent 3-D network structure after immobilization. Therefore, it was concluded that the functional group on PCA-PAEK determined the morphology and performance of the CuO-MNFs.
得益于羧基官能团，高性能聚合物PCA-PAEK首次被用作模板，通过静电纺丝和后续煅烧制备三维绳状CuO微纳纤维（CuO-MNF）网络薄膜。傅里叶变换红外光谱（FT-IR）证实了模板与铜离子之间的离子交换反应，并结合能谱（EDX）和X射线衍射光谱（XRD）证明了CuO的最终结构。扫描电子显微镜（SEM）和热重分析（TGA）显示，少量铜固定在模板上，导致CuO-MNF的直径较小（348 nm）、长度较短且具有三维网络结构。然后详细研究了CuO-MNF对葡萄糖的直接电催化氧化作用，并使用循环伏安法和计时电流法进行评估。结果表明，在+0.40 V时，与传统模板制备的CuO-MNF相比，其具有更高的灵敏度、更快的响应速度和更好的抗干扰能力。性能的提高归因于固定后高的表面体积比和优异的三维网络结构。因此，得出结论，PCA-PAEK上的官能团决定了CuO-MNF的形态和性能。
