TiO2-Graphene Hybrid Nanostructures by Atomic Layer Deposition with Enhanced Electrochemical Performance for Label-free Pb(Ⅱ) and Cd(Ⅱ) Detection

摘要：

　　Atomic layer deposition is applied to coat graphene nanosheets with nano-TiO2 (TiO2-Grs).The coatings have a highly controlled thickness.TiO2-Gr nanosheets are used for fabricating the enhanced electrochemical sensing platform to determine the lead (Pb2+) and cadmium (Cd2+) by differential pulse anodic stripping voltammetry (DPASV).It is found that the prepared TiO2-Gr composite films exhibit improved sensitivity for the metal ion detection.The linear dynamic ranges are from 1.0×10-8 M to 3.163×10-5 M for Pb2+ and 6.0×10-7 M to 3.163×10-5 M for Cd2+,respectively.The detection limits (S/N = 3) are estimated to be 1.0×10-11 M for Pb2+ and 2.0×10-7 M for Cd2+,respectively.

关键词： Atomic layer deposition Electrochemistry Detection

作者: Hongfen Zhang Shaomin Shuang Yujing Guo Zhongping Li Zhen Chen Chuan Dong

作者单位: Institute of Environmental Science, and School of Chemistry and Chemical Engineering,Shanxi Universi Institute of Environmental Science, and School of Chemistry and Chemical Engineering,Shanxi Universi

会议类型: 国内会议

会议名称: 第十二届全国电分析化学学术会议

会议地点: 桂林

会议语种:英文

页码: 158-159

在线出版日期: 2014-04-01（万方平台首次上网日期，不代表论文的发表时间）