Green and facile electrode modification by spark discharge: Bismuth oxide-screen printed electrodes for the screening of ultra-trace Cd(II) and Pb(II)

We report that highly effective electrode modification can be achieved by sparking process between a flat electrode substrate and a tip counter electrode. The concept is introduced by the development of Bi2O3-modified graphite screen printed electrodes (SPEs). SPEs were sparked with a bismuth wire at 1.2 kV under atmospheric conditions. The effect of polarity on the morphology of the sensing surface, bismuth loading and the sensitivity of the resulting sensors for the simultaneous anodic stripping voltammetric determination of Cd(II) and Pb(II) was investigated. Compared with electroplated and various bismuth precursors bulk-modified SPEs, the developed sparked electrodes exhibited considerably lower limit of detection (0.2 mu g L-1, S/N = 3) for each target ion. Therefore, sparking technique offers a facile and green approach for the development of highly sensitive bismuth-based electrodes, and a wide-scope of applicability in the development of metal-modified sensing surfaces. (C) 2014 Elsevier B.V. All rights reserved.

[1]  Mansoo Choi,et al.  A study of pin-to-plate type spark discharge generator for producing unagglomerated nanoaerosols , 2012 .

[2]  D. Gournis,et al.  Performance of layer-by-layer deposited low dimensional building blocks of graphene-prussian blue onto graphite screen-printed electrodes as sensors for hydrogen peroxide , 2014 .

[3]  Site-specific growth and density control of carbon nanotubes by direct deposition of catalytic nanoparticles generated by spark discharge , 2013, Nanoscale Research Letters.

[4]  John S. Rigden,et al.  Macmillan encyclopedia of physics , 1997 .

[5]  Ioannis Raptis,et al.  Disposable lithographically fabricated bismuth microelectrode arrays for stripping voltammetric detection of trace metals , 2011 .

[6]  Adisorn Tuantranont,et al.  Ultra-rapid VOCs sensors based on sparked-In2O3 sensing films , 2014 .

[7]  H. Dai,et al.  Bismuth Titanate films produced by the tanodic spark deposition technique , 2014 .

[8]  Ya-li Li,et al.  Structural changes of carbon nanotubes in their macroscopic films and fibers by electric sparking processing , 2008 .

[9]  P. Singjai,et al.  Atomic force microscopy imaging of ZnO nanodots deposited on quartz by sparking off different tip shapes , 2007 .

[10]  Anastasios Economou,et al.  Bismuth-film electrodes: recent developments and potentialities for electroanalysis , 2005 .

[11]  Rashid O. Kadara,et al.  Development of disposable bulk-modified screen-printed electrode based on bismuth oxide for stripping chronopotentiometric analysis of lead (II) and cadmium (II) in soil and water samples. , 2008, Analytica chimica acta.

[12]  W. Plieth.  Electrochemical properties of small clusters of metal atoms and their role in the surface enhanced Raman scattering , 1982 .

[13]  K. Brainina,et al.  Novel approach to bismuth modifying procedure for voltammetric thick film carbon containing electrodes , 2007 .

[14]  P. Singjai,et al.  Photocatalytic property of colloidal TiO2 nanoparticles prepared by sparking process , 2008 .

[15]  P. Trikalitis,et al.  Disposable screen-printed sensors modified with bismuth precursor compounds for the rapid voltammetric screening of trace Pb(II) and Cd(II). , 2012, Analytica chimica acta.

[16]  Rashid O. Kadara,et al.  Disposable Bismuth Oxide Screen Printed Electrodes for the High Throughput Screening of Heavy Metals , 2009 .

[17]  J. Byeon,et al.  Fabrication of bimetallic nanostructures via aerosol-assisted electroless silver deposition for catalytic CO conversion. , 2014, ACS applied materials & interfaces.