Annealing temperature regulating the dispersity and composition of nickel-carbon nanoparticles for enhanced glucose sensing

Sichao Zeng, Qiuping Wei, Hangyu Long, Lingcong Meng, Li Ma, Jun Cao, Haichao Li, Zhiming Yu, Cheng-Te Lin, Kechao Zhou, Pei San (Sharel) E

Research output: Contribution to journalArticlepeer-review

Abstract

Design of electrodes with both excellent electrocatalytic activity and facile synthesis process is the pivotal challenge in the progress of non-enzymatic glucose sensors. In this work, a series of highly dispersed nickel-carbon nanoparticles modified boron doped diamond composite electrodes were fabricated after the boron doped diamond films with a sputtering nickel layer being annealed at different temperature in hydrogen atmosphere. The surface morphology and interface structure of nickel-carbon nanoparticles modified boron doped diamond samples were characterized detailedly with the increase of annealing temperature. The charge transfer of synthesized electrodes was improved with the increasing content of sp 2 carbon and the improvement of crystallinity of nickel. Therefore, the volcano-type electrocatalytic performance trend was observed with the composite electrode prepared after annealing at 500 °C presenting the best glucose sensing performance with the sensitivities of 1730 and 1081 μA cm −2 mM −1 in glucose concentration ranges of 0.01–2.12 and 2.12–9.06 mM respectively and a low detection limit of 0.2 μM (S/N = 3).

Original languageEnglish
Article number113827
Pages (from-to)113827
Number of pages12
JournalJournal of Electroanalytical Chemistry
Volume859
DOIs
Publication statusPublished - 8 Jan 2020

Bibliographical note

Funding Information:
We gratefully acknowledge the National Key Research and Development Program of China (No. 2016YFB0301402 , No. 2016YFB0402705 ), the National Natural Science Foundation of China (No. 51601226 , No. 51874370 , No. 51302173 ), the State Key Laboratory of Powder Metallurgy , the Fundamental Research Funds for the Central Universities of Central South University ( 2018zzts014 and 2017gczd024 ), Hunan Provincial Natural Science Foundation of China (No. 2019JJ50796 ), Hunan Provincial Innovation Foundation for Postgraduate ( CX2018B085 ) and the Open-End Fund for the Valuable and Precision Instruments of Central South University for financial support. The authors also wish to thank the reviewers and editor for kindly giving revising suggestions.

Publisher Copyright:
© 2020 Elsevier B.V.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

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