Fabrication of NiFeB flexible electrode via electroless deposition towards selective and sensitive detection of dopamine

Abstract

The abstract should be a single paragraph that summarises the content of the article A novel cost effective and eco-friendly flexible electrochemical sensor was designed to deal with the problems...

Tailoring cellulose paper via electroless CuSnB deposition for selective electrochemical detection of dopamine

“…7 The incorporation of highly conductive carbonaceous material with active metallic nanoparticles is beneficial to achieve well-separated oxidation peaks and enhanced peak currents for selective and sensitive detection. 8,9 Previously, various efforts had been made to improve the LOD for eliminating interferences by using transition metal composites, functionalised nanomaterials, polymers, polyoxometalates, etc., among which transition metal hybrid nanocomposites with carbonaceous materials are considered a highly promising candidate. 9,10 In this scenario, the applicability of oxides of copper and tin towards selective detection of dopamine has been extensively studied, 11,12 where their promising activity is found to be encouraging towards the development of bimetallic composites for achieving a good LOD.…”

“…Moreover, it can also be utilised for non-conductive substrates. 8,14 By considering all the aforesaid facts, we have chosen cellulose paper (CP) as a substrate, CuSnB over Vulcan carbon (VC) as an active electrode material, and electroless deposition as a fabrication procedure to develop an eco-friendly flexible electrode for selective and sensitive detection of dopamine, which can be utilised as a disposable electrode for point-of-care diagnostic applications. With this view point, highly active metallic CuSnB nanoparticles were decorated over highly conductive Vulcan carbon-coated cellulose paper by the electroless deposition method.…”

“…S4A, ESI †), supported the presence of CuSnB in the electrode. 8,17 In order to examine the electrochemical behaviour of the as-fabricated CuSnB/VC-CP electrode towards dopamine detection, cyclic voltammetry (CV), differential pulse voltammetry (DPV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) studies were performed by taking the paper electrode as a working electrode (WE), with Ag/ AgCl/3M KCl and Pt-wire as a reference and counter electrode, respectively, in 0.1 M phosphate buffer solution (PBS) at pH = 7.0. Initially, the CV study was performed in 50 mM DA and 200 mM AA containing PBS electrolyte at a scan rate of 20 mV s À1 for various CuSnB/VC-CP electrodes prepared with different metal precursor ratios.…”

“…7 The incorporation of highly conductive carbonaceous material with active metallic nanoparticles is beneficial to achieve well-separated oxidation peaks and enhanced peak currents for selective and sensitive detection. 8,9 Previously, various efforts had been made to improve the LOD for eliminating interferences by using transition metal composites, functionalised nanomaterials, polymers, polyoxometalates, etc. , among which transition metal hybrid nanocomposites with carbonaceous materials are considered a highly promising candidate.…”