Electrocatalytic oxidation of amitrole and diuron on iron(II) tetraaminophthalocyanine-single walled carbon nanotube dendrimer

Coordination chemistry on carbon surfaces

“…The preparation of reusable catalysts was thus reported by Moghadam [401,402] with supported manganese (III) porphyrin for the epoxidation of alkenes (Table 23, entry 1), Riant [403] with supported gold(I) phosphine-complex for enyne cycloisomerization (Table 23, entry 2) and more recently, Gouygou and Roman-Martinez [404] with supported chiral rhodium complexes for enantioselective hydrogenation (Table 23, entry 3). Nickel(II) or iron(II) phtalocyanine complexes for electrocatalytic oxidation were also prepared via covalent attachment to CNT (Table 23, entries 4-5) [405,406]. Following the same anchoring strategy, Durand and Sun reported a beneficial influence of the carbon nanotubes in the ethylene polymerization catalyzed by supported Ni(II) diimino-complexes (Table 23, entry 6) [407].…”

High-performance electrochemical amperometric sensors for the sensitive determination of phenyl urea herbicides diuron and fenuron

“…The practical applicability of the GO-MWCNTs/GCE was evaluated by determining the amount of DU and FU present in spiked water samples collected from well, lake, and Benzene diamine functionalized single walled carbon nanotube-cobalt (II) tetracarboxy-phthalocyanine conjugates 1 × 10 −5 -2 × 10 −4 0.42 μA μM −1 cm −2 [42] Monocarboxy-phthalocyanine-single walled carbon nanotube conjugates 1 × 10 −5 -2 × 10 −4 3.7 μA μM −1 cm −2 [16] Iron(II)tetraaminophthalocyanine-single walled carbon nanotube dendrimer 5 × 10 −5 -1 × 10 −4 0.6641 μA μM −1 [14] Graphene oxide-multiwalled carbon nanotubes 9 × 10 −6 -3.8 × 10 −4 0.645 μA μM −1 cm −2 This work Tables 2 and 3 for DU and FU, respectively. Acceptable recoveries obtained in the real sample studies reveal the excellent practical feasibility of the fabricated sensor.…”

“…chromatography [11], ultrahigh-pressure liquid chromatography triple quadrupole linear ion-trap mass spectrometry [12], and time-resolved fluoroimmunoassay [13]; however, most of these methods involve time-consuming and tedious procedures. On the other hand, electrochemical techniques provide rapid, highly sensitive, and selective detection pathways [14][15][16]. The unmodified electrodes suffer from serious drawbacks such as high overpotential and electrode surface fouling issues.…”

An Overview of Pesticide Monitoring at Environmental Samples Using Carbon Nanotubes-Based Electrochemical Sensors

“…Their efficient capabilities of electronic transfer, which are achieved with the π-electron system present in their structure, and their capacity to accommodate different metal ions such as Ni 2+ , Fe 3+ , Cu 2+ , and Mg 2+ become these promising materials. Many studies reported the use of metal phthalocyanines and porphyrins and MWCNT as modifiers on surface electrode [78,80,98]. Siswana et al [77] carried out the electrocatalytic detection of amitrole using a pyrolytic graphite electrode modified with multi-walled carbon nanotubes and iron (II) tetra-aminophthalocyanine (MPc).…”

“…The proposed sensor showed no interference from other pesticides present in aqueous solutions. Mugadza et al [78] reported the simultaneous detection of amitrole and diuron using GCE modified with iron(II) tetraaminophthalocyanine (FeTAPc)-single-walled carbon nanotube (SWCNT). These chemical species promoted the electrocatalytic oxidations of amitrole and diuron, and the linear concentration ranges for amitrole and diuron were from 5.0 × 10 −5 to 1.0 × 10 −4 mol·L −1 , and detection limits of 2.1 × 10 −7 mol·L −1 and 2.6 × 10 −7 mol·L −1 were obtained, respectively.…”