Highly sensitive detection of hexavalent chromium utilizing a sol-gel/carbon nanotube modified electrode

摘要：

　　A pyridine-functionalized thin film has been fabricated to selectively preconcentrate Cr(Ⅵ) anions for electrochemical detection in the 5-300 μg L-1 range.Glassy carbon electrodes were modified through physical deposition of single-walled carbon nanotubes (SWNTs) on the electrode surface,followed by electrochemical deposition of a sol-gel containing a 2-pyridine functional group.The use of SWNTs has increased sensitivity for Cr(Ⅵ) detection in aqueous solutions,providing a detection limit of 0.8 μg L-1.

关键词： Chromium detection Single-walled carbon nanotubes Glassy carbon electrode Sol-gel Thin film Iridescence

作者: Samuel M.Rosolina Stefanie A.Bragg Ruizhuo Ouyang James Q.Chambers Zi-Ling Xue

作者单位: Department of Chemistry,University of Tennessee,Knoxville,TN 37996,USA

会议类型: 国际会议

会议名称: 2016全国生命分析化学学术大会

会议地点: 南京

会议语种:英文

页码: 120-125

在线出版日期: 2016-12-23（万方平台首次上网日期，不代表论文的发表时间）