Electrochemical Determination of Nitrite Using Catalyst Free Mesoporous Carbon Nanoparticles from Bio RenewableAreca nutSeeds

Abstract

The preparation of advanced nanomaterials with unique functions from the bio-renewable (natural resources) materials is considered as one of the environmentally friendly and cost effective approaches. In this report, we demonstrate on the synthesis of carbon nanospheres with tunable diameters (30-40 nm) and controlled morphology with a pore size ∼2.0 nm from biorenewable carbon rich Areca nut and their applications in the electrochemical sensing of nitrite. The obtained carbon nanospehres exhibit good linear range (0.2 to 400 μM) for electrocatalytic oxidation of nitrite, are able to detect low levels of nitrite with high sensitivity (28.91 mA/ μM/cm 2 ) and are found to have better sensing capability than other porous carbon based electrocatalysts. This excellent electrocatalytic performance of carbon nanospheres toward oxidation of nitrite may be arising from synergistic effect between its high porosity, surface area and the catalytic effect of the carbon surface due to the presence of surface functional groups. The carbon nanosphere based sensor is also succesfully used for the real time sensing of nitrite from sea and lake water.

Cost‐effective bio‐derived mesoporous carbon nanoparticles‐supported palladium catalyst for nitroarene reduction and Suzuki–Miyaura coupling by microwave approach

“…The precursor, areca nut kernel, used for the preparation of CNSs was collected from the areas near Sirsi, Karnataka, India. The detailed procedure for synthesizing CNSs from biomaterials has been discussed in our previous articles . In brief, the finely powdered precursor was pyrolyzed at approximately 550 °C under a nitrogen atmosphere.…”

Interconnected activated carbon nanofiber derived from mission grass for electrode materials of supercapacitor

“…The original shape of cellulose is rod-like, and at high temperatures, it has the potential to be microfiber and nanofiber [33], while hemicellulose and lignin tend to form globular morphology [16,33,34]. At high temperature, the activation process has the potential to form nanosheet and nanosphere structures, as previously reported [35,36]. Furthermore, KOH activation is beneficial for larger SSA with suitable porous and interconnected pore structure.…”

Recent Developments in Carbon Sensors for At-Source Electroanalysis

“…Zhang et al reported measuring nitrite with bacterial cellulose, offering excellent biocompatibility and mechanical strength, coupled with GO, to electrochemically activate the composite material . Additionally, Yallappa et al used mesoporous carbon nanospheres recycled from biorenewable areca nut seeds to make measurements in lake and seawater . Another notable study reported a total analysis system, capable of measuring multiple analytes, including nitrate, nitrite, salinity, and chloride, in seawater .…”