Determination of p-nitrophenol on carbon paste electrode modified with a nanoscaled compound oxide Mg(Ni)FeO

Electrochemical Detection of 4-Nitrophenol by Using Graphene Based Nanocomposite Modified Glassy Carbon Electrodes: A Mini Review

“…Electrochemical methods are becoming increasingly popular for the detection of 4-NPh. The electrochemical approach offers the advantages of low cost, easily handling, good sensitivity and selectivity and in-situ detection [46][47]. The electrochemical analysis of 4-NPh using a bare GCE offers lower sensitivity, excessive over potential and interference problems [48].…”

A facile approach for synthesizing molecularly imprinted graphene for ultrasensitive and selective electrochemical detecting 4-nitrophenol

“…The limit of detection is calculated to be 5 nM (S/N = 3). Additionally, the performance of our GR/MIPs sensor was compared with those of other previously reported electrochemical sensors [35,[37][38][39][40][41][42][43] for detecting 4-NP, as shown in Table 1. It can be seen that the GR/ MIPs sensor offered lower detection limit than most of other sensors.…”

Highly sensitive p-nitrophenol determination employing a new sensor based on N-Methylphenazonium methyl sulfate and graphene: Analysis in natural and treated waters

“…The redox couple R2/O1 is due to the reversible two-electron oxidation of the hydroxylamine group ( NHOH) to the nitroso group ( NO) [2,37]. The Scheme 1 shows the reduction and oxidation reactions of the analyte on the composite modified electrode [12]. Due to the stability of NMP/NMP + redox couple on NMP/Gr/GC electrode, it can be used as a mediator to shuttle electrons between electrode and p-NP.…”

“…inorganic -organic [10]; ZnO nanoparticles/carbon nanotubes doped chitosan [11]; Mg(Ni)FeO [12]; poly(methylene blue) [13]; molecularly imprinted-chitosan/phenyltrimethoxysilane/AuNPs hybrid [14]; MWCNT/Poly(diphenylamine) [15]; mesoporous carbon [16], and more recently graphene oxide [17].…”