文献类型：期刊文献

英文题名：Enzyme- and metal-free electrochemical sensor for highly sensitive superoxide anion detection based on nitrogen doped hollow mesoporous carbon spheres

作者：Liu, Li[1];Zhao, Hongli[1];Shi, Libo[1];Lan, Minbo[1,2];Zhang, Hongwei[3];Yu, Chengzhong[3]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[3]Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia

年份：2017

卷号：227

起止页码：69

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20170203230455);WOS:【SCI-EXPANDED(收录号:WOS:000394399600010)】；

基金：This work was financially supported by the National Natural Science Foundation of China (NSFC, No. 21305044) and the Science and Technology Commission of Shanghai Municipality (STCSM, No. 16520710800).

语种：英文

外文关键词：Nitrogen doped hollow mesoporous carbon; spheres; electrochemical sensor; superoxide anion; highly sensitive

摘要：In this work, a highly sensitive enzyme- and metal -free electrochemical method for superoxide anion (O-2(.-)) detection has been developed by employing scree-printed carbon electrodes (SPCE) modified by nitrogen doped hollow mesoporous carbon spheres (N-HMCS). For comparison, solid carbon spheres (SCS) and hollow mesoporous carbon spheres (HMCS) were also synthesized to fabricate the modified SPCE. Compared with SCS/SPCE and HMCS/SPCE, N-HMCS/SPCE displayed a higher electrochemical performance. When applied for electrochemical detection of 02, N-HMCS/SPCE exhibited a high sensitivity of 1.49 mu Acm(-2) M-1, better than SCS/SPCE and HMCS/SPCE and many of enzyme- or metal based superoxide anion sensors. N-HMCS is expected to become a new generation of sensing materials for electrochemical analysis of O-2(.-). (C) 2016 Elsevier Ltd. All rights reserved.