文献类型：期刊文献

英文题名：Prussian blue/1-butyl-3-methylimidazolium tetrafluoroborate Graphite felt electrodes for efficient electrocatalytic determination of nitrite

作者：Wang, Lei[1];Tricard, Simon[3];Cao, Linghua[1];Liang, Yanling[1];Zhao, Jihua[1];Fang, Jian[1];Shen, Weiguo[1,2]

机构：[1]Lanzhou Univ, Sch Chem & Chem Engn, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Peoples R China;[2]E China Univ Sci & Technol, Sch Chem & Chem Engn, Shanghai 200237, Peoples R China;[3]Univ Toulouse, CNRS, INSA, Lab Phys & Chim Nanoobjets, F-31077 Toulouse, France

年份：2015

卷号：214

起止页码：70

外文期刊名：SENSORS AND ACTUATORS B-CHEMICAL

收录：;EI(收录号：20151400700759);WOS:【SCI-EXPANDED(收录号:WOS:000353131300010)】；

基金：Financial support was provided by the National Natural Science Foundation of China (Projects 20603014, 20673059, 20973061 and 20903051), the Chinese Ministry of Education (Key Project 105074), the Committee of Science and Technology of Shanghai(Projects 0652nm10 and 08JC1408100) and the Fundamental Research Funds for the Central Universities (Project lzujbky-2011-116).

语种：英文

外文关键词：Ionic liquid; Prussian blue; Graphite felt; Nitrite; Electrocatalysis

摘要：In this study, a novel Prussian blue (PB), ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4]) and graphite felt (GF) nanocomposite electrode (PB/[Bmim][BF4]-GF) was obtained by simple methods involving GF placed in a ultrasound bath of [Bmim][BF4] and then in a PB precursor solution. The electrode showed an efficient activity for electrocatalytic detection of nitrite. [Bmim][BF4] was ultrasonically immobilized on GF, and played two roles in the fabrication of the electrode: (1) enhancing the synthetic rate of PB from a K-3 [Fe( CN)(6)] and FeCl3 solution; (2) anchoring PB nanoparticles on the surface of the GF. The PBI[Bmim][BF4]-GF electrode was characterized by scanning election microscopy (SEM), infrared spectroscopy (IR), X-ray diffraction (XRD) and electrochemical methods, respectively. The as prepared PB/[Bmim][BF4]-GF electrode exhibited a rapid response of less than 2s, a very high detection sensitivity of 3.5 A mol(-1) L, a low detection limit of 1.3 x 10(-8) mol L-1 as well as excellent stability and selectivity. (C) 2015 Elsevier B.V. All rights reserved.