Controllable synthesis of highly active Au@Ni nanocatalyst supported on graphene oxide for electrochemical sensing of hydrazine

Recent developments in electrochemical sensors for detecting hydrazine with different modified electrodes

“…9). 83 In their study, Shahid et al procured the RGO-cobalt oxide nano-cube@gold (RGO-Co 3 O 4 @Au) nanocomposite via a onepot hydro-thermal synthesis. According to them, RGO-Co 3 O 4 @Au nanocomposite displayed acceptable electrocatalytic activities toward HZ oxidation in the PBS (pH ¼ 7.2).…”

La1–xKxFeO3−δ: An Anion Intercalative Pseudocapacitive Electrode for Supercapacitor Application

“…The kinetics of the electrode can be examined with the help of the diffusion coefficient. Determination of the diffusion coefficient of those electrodes was done using Randles–Sevick equation where i p is the peak current (A), n is the number of electrons transferred in the redox event (usually 1), A is the electrode area in cm 2 , D is the diffusion coefficient in cm 2 /s, C o is the OH – ion concentration in mol/cm 3 , and ν is the scan rate in V/s.…”

“…For balancing the charge storage capacity of the cell, the mass ratio ( m + / m – ) of the positive and negative electrode materials was measured using the following equation where m + , m – , C + , C – , Δ E + , and Δ E – are the mass, specific capacitance, and potential window of the positive and negative electrodes, respectively, estimated by the three-electrode measurement. , …”

“…Determination of the diffusion coefficient of those electrodes was done using Randles−Sevick equation. 36 i n AD C v 2.686 10…”

Hierarchically Au-functionalized derived ultrathin NiO nanosheets for highly sensitive electrochemical hydrazine detection

“…Hydrazine (N 2 H 4 ) and its derivatives have been extensively used in various industrial and agriculture applications, including antioxidants, blowing agents, pesticides, corrosive inhibitors and catalysis in fuels for missile propulsion systems and aircraft [1,2]. However, it is well known that people exposed to a low concentration of hydrazine may cause serious health problems, including damage to DNA, eyes, nose, throat, even to kidneys, liver, central nervous and cardiovascular [3,4]. Because of the severe mutagenic and carcinogenic to humans [5], the threshold limit value (TLV) of hydrazine concentration should be lower than 10 ppb according to the International Agency for Research on Cancer (IARC).…”