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Title: | Nanostructured nitrogen doped diamond for the detection of toxic metal ions | Authors: | Deshmukh, Sujit KAMATCHI JOTHIRAMALINGAM, Sankaran Korneychuk, Svetlana Verbeeck, Johan Mclaughlin, James HAENEN, Ken Roy, Susanta Sinha |
Issue Date: | 2018 | Publisher: | PERGAMON-ELSEVIER SCIENCE LTD | Source: | ELECTROCHIMICA ACTA, 283, p. 1871-1878 | Abstract: | This work demonstrates the applicability of one-dimensional nitrogen-doped diamond nanorods (N-DNRs) for the simultaneous electrochemical (EC) detection of Pb2+ and Cd2+ ions in an electrolyte solution. Well separated voltammetric peaks are observed for Pb2+ and Cd2+ ions using N-DNRs as a working electrode in square wave anodic stripping voltammetry measurements. Moreover, the cyclic voltammetry response of N-DNR electrodes towards the Fe(CN)(6)(/4-)/Fe(CN)(6)(/3-) redox reaction is better as compared to undoped DNR electrodes. This enhancement of EC performance in N-DNR electrodes is accounted by the increased amount of sp(2) bonded nanographitic phases, enhancing the electrical conductivity at the grain boundary (GB) regions. These findings are supported by transmission electron microscopy and electron energy loss spectroscopy studies. Consequently, the GB defect induced N-DNRs exhibit better adsorption of metal ions, which makes such samples promising candidates for next generation EC sensing devices. (C) 2018 Elsevier Ltd. All rights reserved. | Notes: | [Deshmukh, Sujit; Roy, Susanta Sinha] Shiv Nadar Univ, Sch Nat Sci, Dept Phys, NH 91, Greater Noida 201314, Uttar Pradesh, India. [Sankaran, Kamatchi Jothiramalingam; Haenen, Ken] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. [Sankaran, Kamatchi Jothiramalingam; Haenen, Ken] IMEC VZW, IMOMEC, B-3590 Diepenbeek, Belgium. [Korneychuk, Svetlana; Verbeeck, Johan] Univ Antwerp, Electron Microscopy Mat Sci EMAT, B-2020 Antwerp, Belgium. [Mclaughlin, James] Univ Ulster, Nanotechnol & Integrated Bioengn Ctr, Jordanstown Campus, Newtownabbey BT37 0QB, North Ireland. | Keywords: | Nitrogen-doped diamond nanorod; Cyclic voltammetry; Square wave anodic stripping voltammetry; Nanographitic phase; Electron energy loss spectroscopy;Nitrogen-doped diamond nanorod; Cyclic voltammetry; Square wave anodic stripping voltammetry; Nanographitic phase; Electron energy loss spectroscopy | Document URI: | http://hdl.handle.net/1942/27507 | ISSN: | 0013-4686 | e-ISSN: | 1873-3859 | DOI: | 10.1016/j.electacta.2018.07.067 | ISI #: | 000441077900203 | Rights: | © 2018 Elsevier Ltd. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2019 |
Appears in Collections: | Research publications |
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