摘要
采用水热合成和层接层自组装技术将Preyssler型多金属氧酸盐K_(12.5)Na_(1.5)[NaP_(5)W_(30) O_(110)](简称P_(5)W_(30))和TiO_(2)纳米线制备成复合修饰电极材料.利用扫描电子显微镜(SEM)和透射电子显微镜(TEM)对复合修饰电极材料的形貌进行了表征.使用循环伏安法研究了修饰电极的电化学性质和对亚硝酸根的电催化性能.与单纯多酸修饰电极P_(5)W_(30)/PAH相比,构筑在纳米线上的复合材料修饰电极P_(5)W_(30)/PAH/TiO_(2)展示了更好的电催化性能,采用安培检测测试其最低检出限为20.9μmol/L.这可能是因为TiO_(2)纳米线阵列独特的三维结构有利于离子的吸附且缩短了反应路径.
In this paper,a chemical modified electrode based on Preyssler-type polyoxometalate K_(12.5)Na_(1.5)[NaP_(5)W_(30) O_(110)](P_(5)W_(30))and TiO_(2) nanowire arrays was fabricated via hydrothermal and layer-by-layer(LbL)self-assembly combination methods.The morphology of P_(5)W_(30) modified electrodes were characterized by scanning electron microscopy(SEM)and transmission electron microscopy(TEM).Electrochemical properties and electrocatlytic activity of P_(5)W_(30) modified electrodes towards NO^(-)_(2) were performed using cyclic voltammetry.Compared to individual P_(5)W_(30) modified electrode PAH/P_(5)W_(30),the modified electrode based on TiO_(2) nanowire P_(5)W_(30)/PAH/TiO_(2) showed outstanding electrocatalytic activity with the low detection limit of 20.9μmol/L using ampere test method,which probably originate from the unique 3D structure of the TiO_(2) NW arrays facilitating the adsorption of ions and shortens the reaction path.
作者
付玉
刘宇航
曲小姝
刘树萍
杨艳艳
FU Yu;LIU Yu-hang;QU Xiao-shu;LIU Shu-ping;YANG Yan-yan(School of Chemistry and Pharmaceutical Engineering,Jilin Institute of Chemical Technology,Jilin 132022,China;College of Tourism and Cuisine,Harbin University of Commerce,Harbin 150076,China)
出处
《东北师大学报（自然科学版）》
CAS
北大核心
2022年第2期95-99,共5页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(22071080)
吉林省自然科学基金资助项目(2020122375JC)。
作者简介
付玉(1996—),女,硕士研究生,主要从事多酸多功能材料研究;通信作者:曲小姝(1974—),女,博士,教授,主要从事多酸化学研究.
