Ferrite Nanocomposite Based Electrochemical Sensor: Characterization, Voltammetric and Amperometric Studies for Electrocatalytic Detection of Formaldehyde in Aqueous Media

Abstract

Development of nanocomposite based electrochemical sensors for detection of toxic chemicals describes an environmentally benign strategy for monitoring the health of ecosystem. Herein, we reported in situ preparation of graphitic carbon nitride (g‐C3N4) decorated Ag2S/NiFe2O4 nanocomposite sensor by facile precipitation method. The electrochemical studies demonstrated efficient electrocatalytic activity of ternary nanocomposite pasted glassy carbon electrode (g‐C3N4@Ag2S/NiFe2O4/GCE) for selective detection of formaldehyde. Moreover, fabricated sensor exhibit rapid amperometric response with excellent selectivity, remarkable sensitivity (1681 μA mmol L−1 cm−2) and lower detection limit (LOD: 1.63 μmol L−1). It is noteworthy to mention that sensor exhibits good operational and long‐term storage stability.

Optical, electrochemical and photocatalytic properties of cobalt doped CsPbCl3 nanostructures: a one-pot synthesis approach

“…The current density ( i ) of voltammgam can be estimated by the equation. where v is the scan rate (Vs −1 ), A is the area of electrode (cm 2 ), D is the diffusion cofficient and C is the concentration of electrode active species in the electrolyte (molL −1 ) 33 . A linear corelation of peak current and square root of scan rate shows the electrode reactionsas adiffusion controled process.…”

Solvothermal synthesis of Fe doped MnSnO 3 : An approach of wide bandgap perovskite towards optical, luminescence, and electrochemical properties

“…Moreover, the graph between the peak current and square root of scan rate shows a linear relationship, which exhibits that pristine and Fe doped MnSnO 3 nanomaterials are diffusion-controlled reactions in nature. 31,32 Figure 10 shows the Nyquist plot of pristine and Fe doped MnSnO 3 . None of the samples showed a circular arc in the high-frequency region but all the samples show almost a straight line in the low-frequency region called Warburg resistance, which is caused due to the frequency dependence of ion diffusion from the electrolyte to the surface.…”

A catalyst support for direct-ammonia solid-oxide fuel cell anodes based on lanthanum titanium oxynitride

“…4b and S14b †), respectively, with their corresponding satellites at around 860-861 and 878-879 eV, corresponding to the presence of Ni 2+ . 50,51,53,55,57,58 Furthermore, the Ni 0 signal at around 852 eV further conrms the presence of metallic nickel on the catalyst surface. 59,60 Fig.…”