PMID- 23473251 OWN - NLM STAT- MEDLINE DCOM- 20130912 LR - 20131121 IS - 1873-4324 (Electronic) IS - 0003-2670 (Linking) VI - 768 DP - 2013 Mar 20 TI - Preparation of cobalt-tetraphenylporphyrin/reduced graphene oxide nanocomposite and its application on hydrogen peroxide biosensor. PG - 69-75 LID - S0003-2670(13)00167-0 [pii] LID - 10.1016/j.aca.2013.01.019 [doi] AB - A novel cobalt-tetraphenylporphyrin/reduced graphene oxide (CoTPP/RGO) nanocomposite was prepared by a pi-pi stacking interaction and characterized by ultraviolet-visible absorption spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR) and electrochemical impedance spectroscopy (EIS). The CoTPP/RGO nanocomposite exhibited high electrocatalytic activity both for oxidation and reduction of H2O2. The current response was linear to H2O2 concentration with the concentration range from 1.0x10(-7) to 2.4x10(-3)molL(-1) (R=0.998) at the reductive potential of -0.20V and from 1.0x10(-7) to 4.6x10(-4)molL(-1) (R=0.996) at the oxidative potential of +0.50V. The H2O2 biosensor showed good anti-interfering ability towards oxidative interferences at the oxidative potential of +0.50V and good anti-interfering ability towards reductive interferences at the reductive potential of -0.20V. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Zheng, Longzhen AU - Zheng L AD - Department of Chemistry and Chemical Engineering, East China Jiao Tong University, Nanchang, Jiangxi 330013, PR China. zlz@ecjtu.jx.cn FAU - Ye, Dan AU - Ye D FAU - Xiong, Leyan AU - Xiong L FAU - Xu, Jingpeng AU - Xu J FAU - Tao, Kun AU - Tao K FAU - Zou, Zhijun AU - Zou Z FAU - Huang, Danlin AU - Huang D FAU - Kang, Xiaowei AU - Kang X FAU - Yang, Shaoming AU - Yang S FAU - Xia, Jian AU - Xia J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130121 PL - Netherlands TA - Anal Chim Acta JT - Analytica chimica acta JID - 0370534 RN - 0 (Oxides) RN - 0 (Porphyrins) RN - 0 (tetraphenylporphyrin) RN - 3G0H8C9362 (Cobalt) RN - 7782-42-5 (Graphite) RN - BBX060AN9V (Hydrogen Peroxide) SB - IM MH - *Biosensing Techniques MH - Cobalt/*chemistry MH - Dielectric Spectroscopy MH - Electrochemical Techniques MH - Electrodes MH - Graphite/*chemistry MH - Hydrogen Peroxide/*analysis MH - Nanocomposites/*chemistry MH - Oxidation-Reduction MH - Oxides/chemistry MH - Porphyrins/*chemistry EDAT- 2013/03/12 06:00 MHDA- 2013/09/13 06:00 CRDT- 2013/03/12 06:00 PHST- 2012/12/02 00:00 [received] PHST- 2013/01/08 00:00 [revised] PHST- 2013/01/12 00:00 [accepted] PHST- 2013/03/12 06:00 [entrez] PHST- 2013/03/12 06:00 [pubmed] PHST- 2013/09/13 06:00 [medline] AID - S0003-2670(13)00167-0 [pii] AID - 10.1016/j.aca.2013.01.019 [doi] PST - ppublish SO - Anal Chim Acta. 2013 Mar 20;768:69-75. doi: 10.1016/j.aca.2013.01.019. Epub 2013 Jan 21.