文献类型：期刊文献

英文题名：Magnetically aligned graphite flakes electrodes for excellent sensitive detection of hydroquinone and catechol

作者：Li, Yan[1];Wu, Tingxia[1];Song, Lingyu[1];Zhu, Yongbao[1];Chen, Yizhe[2];Huang, Yufu[2];Tang, Junping[2];Cheng, Kai[3];Lin, Donghai[2];Chen, Guosong[1]

机构：[1]Nanjing Tech Univ, Coll Chem & Mol Engn, Nanjing 210009, Peoples R China;[2]Shanghai Polytech Univ, Sch Energy & Mat, Shanghai Engn Res Ctr Adv Thermal Funct Mat, Shanghai Key Lab Engn Mat Applicat & Evaluat, Shanghai 201209, Peoples R China;[3]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China

年份：0

外文期刊名：CHEMICAL PAPERS

收录：SCI-EXPANDED(收录号：WOS:000815570400001)、、Scopus(收录号：2-s2.0-85132836973)、WOS

基金：This work is supported by the Program for Professor of Special Appointment (Eastern Scholar) at SIHL, the Sailing Project from Science and Technology Commission of Shanghai Municipality (17YF1406600), the Chenguang project supported by Shanghai Municipal Education Commission (18CG68) and Gaoyuan Discipline of Shanghai-Materials Science and Engineering.

语种：英文

外文关键词：Graphite; Magnetically orientation; Electrochemical detection; Sensor; Hydroquinone; Catechol

外文摘要：Natural graphite has a large electrical conductivity in plane direction, hundreds times of that in vertical direction. Regulating graphite flakes perpendicular to the plane will improve the performance of the sensor. As a non-connected method, magnetic field-assisted orientation can be no-additives. However, some studies believe that diamagnetic materials are non-magnetic, and must be doped by ferromagnetic materials before oriented by a magnetic field. Here, original graphite flakes were vertically oriented by a low magnetic field during the electrode preparation to increase effective surface area. The performance of electrode was enhanced in both potassium ferricyanide/potassium ferrocyanide probe system and detection of hydroquinone (HQ) and catechol (CC). For HQ and CC detection, the sensitivities of vertically oriented graphite flakes electrode are 5.05 times and 6.35 times higher than that of graphite flakes without magnetic field, respectively. This magnetic alignment technology could construct other electrode materials for electrochemical sensors.