Facile synthesis of a 3D MnO₂ nanowire/Ni foam electrode for the electrochemical detection of Cu(ii)

Abstract

MnO2 nanowire arrays grown on Ni foam were successfully synthesized using a one-step hydrothermal approach and then directly applied as the electrode for a heavy metal sensor.

Fabrication of Screen-Printed Electrodes Modified by Hydrothermal MnO2 Microflowers and Carbon for Electrochemical Sensors in Copper Ions Detection

“…To date, various electrode active materials have been investigated for electrochemical sensors to detect copper (II). Te materials include novel metals (nanosilver and nanogold) [11,12], silica-based materials [13], carbon-based materials (graphite, carbon nanotube, graphene) [13][14][15][16][17], and metal oxides (Sb 2 O 3 , MnO 2 , SnO 2 , and Fe 3 O 4 ) [18][19][20][21]. Among them, manganese dioxide (MnO 2 ) has gained great attraction due to its merits such as cheap cost, simple synthesis, low toxicity, and environmental friendliness.…”

Fabrication of Coral-like Pd based Porous MnO2 Nanosheet Arrays on Nickel Foam for Methanol Electrooxidation

“…Among the metal oxides, MnO 2 is an environmentally friendly and low cost material. It has been widely used in urea oxidation, detection of heavy metals, and detection of hydrogen peroxide . Mesoporous architecture of materials is important to enhance catalytic performance, ,− which enlarges the electroactive surface area and provides abundant open channels for electrolyte diffusion.…”

Square Wave‐Anodic Stripping Voltammetric Determination of Copper at a Bismuth Film/Glassy Carbon Electrode Using 3‐[(2‐Mercapto‐Vinyl)‐Hydrazono]‐ 1,3‐Dihydro‐Indol‐2‐One

“…It includes, time consuming processes, preconcentration steps, costly solvents and expensive instrumentation, expertise for its proper operation and complexity . Thus, great attention for analysis of copper has been focused towards constructing simple system with short analytical time, good reproducibility, accuracy, selectivity, ruggedness and cost‐effectiveness .…”

“…Surface modified electrodes (SMEs) are known to be one of the most suitable alternatives to mercury electrodes. SMEs coupled stripping methods is a highly comprehensive approach for addressing shortcomings with current methodologies for trace analysis . The most common practice utilized is the enhancement of selectivity towards host and target .…”

“…SMEs coupled stripping methods is a highly comprehensive approach for addressing shortcomings with current methodologies for trace analysis . The most common practice utilized is the enhancement of selectivity towards host and target . Based on the principle, electrode modification by a series of reagents including amoxicillin , hexacyanoferrate , tetraethylthiuram disulfide , tetraphenylporphyrin , p‐tert‐butylcalix(4)arene , organofunctionalized silica and nafion have been reported for copper determination.…”