Simultaneous determination of catechol and hydroquinone using electrospun carbon nanofibers modified electrode

Performance of electrodes synthesized with polyacrylonitrile-based carbon nanofibers for application in electrochemical sensors and biosensors

“…Likewise, compared to other carbon materials such as graphite powder, carbon rods and same materials which need to binder, CNFs can be used without any binder, resulting in increase in electrical conductivity of electrodes [23]. Besides, Electrospun CNFs have advantages over carbon nanotubes: (1) they can be synthesized free catalyst during stabilization and carbonization, causing high purity and (2) they may enhance the facilitation of electron transfer due to more edge sites over the carbon nanotubes [26]. V. Vamvakaki et al reported that CNFs are suitable matrix for the development of biosensors and superior to carbon nanotubes or graphite powder [27].…”

Electrochemical behavior of hydroquinone and catechol at glassy carbon electrode modified by electropolymerization of tetraruthenated oxovanadium porphyrin

“…However, the dihydroxybenzene compounds are considered environmental pollutants by the CONAMA [3], the European Union and the US Environmental Protection Agency (EPA) [4,5], due to their low degradability and high toxicity in the environment [6,7]. Several techniques are used to determine catechol and hydroquinone in environmental samples, such as spectrophotometry [8,9], fluorescence [10,11], high performance liquid chromatography (HPLC) [12,13], CG-MS [14], electrochemical [15][16][17][18][19][20][21][22][23][24][25][26] and other techniques [27]. The electrochemical methods provide advantages over the other techniques, including: low cost; simple handling; fast response; high sensitivity, selectivity and stability; wide linear concentration range and low detection limits.…”

Simultaneous determination of hydroquinone and catechol using covalent layer-by-layer self-assembly of carboxylated-MWNTs

“…Accordingly, it is crucial to develop a selective and simple method for the simultaneous determination of HQ and CC. Recently, high-performance liquid chromatography [4], synchronous fluorescence [5], spectrophotometry [6], gas chromatography/mass spectrometry [7] and electrochemical methods [8][9][10][11][12][13][14][15] have been reported for simultaneous determination of HQ and CC. Among them, electrochemical methods have attracted more attention due to the advantages of fast response, low cost, high sensitivity and selectivity.…”