Development of high-sensitive detection system for redox analytes having a standard potential higher than O2 evolution by using micropatterned conductive boron-doped DLC electrodes

Shinpei Ohtomo, Hiroshi Naragino, Keigo Okafuji, Ryutaro Kobayashi, Kensuke Honda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

High sensitive electroanalytical system for redox analytes with standard potential higher than O2 evolution was developed by realizing interdigitated microarray electrodes based on boron-doped DLC (B-DLC-IDA). For Ce3+/4+ with the standard potential of 1.6 V, the amplification of response current derived from redox cycling was observed at B-DLC-IDA in the dual mode measurement. The amperometric current was amplified 180-fold by applying the potential of 1.7 V and 0.8 V to the collector and the generator electrodes in chronoamperometriy (CA) at the dual mode measurement. Theoretical detection limit (S/N = 3) toward Ce3+ was 0.13 μM. This detection limit was able to be improved to the value 2 orders of magnitude lower than that at B-DLC flat electrode by developing the electroanalytical system using B-DLC-IDA electrodes.

Original languageEnglish
Title of host publicationChemical Sensors 12
Subtitle of host publicationChemical and Biological Sensors and Analytical Systems
EditorsM. Carter, Y. Shimizu, W. Y. Lee, T. Yasukawa, R. Mukundan, A. L. Simonian, L. A. Nagahara, O. Niwa, B. A. Chin
PublisherElectrochemical Society Inc.
Pages217-228
Number of pages12
Edition16
ISBN (Electronic)9781607687337, 9781607687672, 9781607687689, 9781607687696, 9781607687702, 9781607687719, 9781607687726, 9781607687733, 9781607687740, 9781607687757, 9781607687771, 9781607687788, 9781607687795, 9781607687801, 9781607687818, 9781607687825, 9781607687832, 9781607687849, 9781607687856, 9781607687863, 9781607687887, 9781607687894, 9781607687900, 9781607687917, 9781607687924, 9781607687931, 9781607687948, 9781607687955, 9781607687962, 9781607687979, 9781607687986, 9781607687993, 9781607688006, 9781607688013, 9781607688020, 9781607688037
DOIs
Publication statusPublished - 2016
Externally publishedYes
EventSymposium on Chemical Sensors 12: Chemical and Biological Sensors and Analytical Systems - PRiME 2016/230th ECS Meeting - Honolulu, United States
Duration: Oct 2 2016Oct 7 2016

Publication series

NameECS Transactions
Number16
Volume75
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

OtherSymposium on Chemical Sensors 12: Chemical and Biological Sensors and Analytical Systems - PRiME 2016/230th ECS Meeting
Country/TerritoryUnited States
CityHonolulu
Period10/2/1610/7/16

All Science Journal Classification (ASJC) codes

  • General Engineering

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