Sensor Potenciométrico Basado en Nanopartículas De Sulfuro De Plata Soportadas en Materiales Carbonosos Para La Detección De Cianuro Libre

Cárdenas-Riojas, Andy Alfredo; Wong, Ademar; Sotomayor, Marı́a Del Pilar Taboada; Rosa-Toro, Adolfo La; Baena-Moncada, Angélica M.

doi:10.21577/0100-4042.20170338

Cited by 2 publications

(4 citation statements)

References 20 publications

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“…[14][15][16]. Among these, electrochemical techniques appear to be more suitable due to their fast response, low cost, high selectivity, and sensitivity [7,[17][18][19][20]. Electrochemical detection relies on electrode supporting materials, such as glassy carbon (GC), which is extensively used due to its ability to adsorb carbonaceous materials like graphene oxide [20], multi-walled carbon nanotubes [18,22], and hierarchical porous carbon [19,20].…”

Section: Introductionmentioning

confidence: 99%

“…Among these, electrochemical techniques appear to be more suitable due to their fast response, low cost, high selectivity, and sensitivity [7,[17][18][19][20]. Electrochemical detection relies on electrode supporting materials, such as glassy carbon (GC), which is extensively used due to its ability to adsorb carbonaceous materials like graphene oxide [20], multi-walled carbon nanotubes [18,22], and hierarchical porous carbon [19,20]. GC electrodes can also be modified with aromatic molecules like quinones, conferring them an enhanced response and in situ stability, making them attractive devices for water pollution detection [23,24].…”

Section: Introductionmentioning

confidence: 99%

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Monitoring WAD cyanide concentration in river waters with a glassy carbon electrode modified with 9,10‐Phenanthroquinone

Cardenas‐Riojas,

Calderon‐Zavaleta,

Quiroz‐Aguinaga

et al. 2023

Electroanalysis

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Heavy metal‐containing industrial effluent streams from electroplating and metalworking industries represent a major environmental issue. They contain metal cyanide complexes ([Ni(CN)4]2− and [Cu(CN)3]2−) referred to as weak acid dissociable cyanide (CN‐WAD), which require continuous in situ monitoring. In this scenario, a glassy carbon (GC) electrode superficially decorated with 9,10‐phenanthroquinone (FNQ) is manufactured and employed for the simultaneous electrochemical monitoring of cyanide WAD complexes. The interaction between GC and FNQ was characterized by Raman and electrochemical impedance spectroscopies, cyclic voltammetry, and chronocoulometry. The electrochemical evaluation was conducted by differential pulse voltammetry (DPV) and CV. The GC/FNQ electrochemical sensor simultaneously detected cyanide complexes with an average linear range of 9–93 μmol L−1, and a detection limit of 0.15±0.04 μmol L−1 and 1.2±0.6 μmol L−1 for [Ni(CN)4]2− and [Cu(CN)3]2−, respectively. The sensor demonstrated remarkable selectivity in the presence of multiple interfering species with a percentage variation range of 89.2–109.4 %. Moreover, a computational DFT study provided valuable insights into the electrode/electrolyte interface. Finally, the developed sensor was applied for the electrochemical detection of WAD cyanide in river water samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Monitoring WAD cyanide concentration in river waters with a glassy carbon electrode modified with 9,10‐Phenanthroquinone

Cardenas‐Riojas,

Calderon‐Zavaleta,

Quiroz‐Aguinaga

et al. 2023

Electroanalysis

View full text Add to dashboard Cite

show abstract

“…Among these, electrochemical techniques appear to be more suitable due to their fast response, low cost, high selectivity, and sensitivity. [7,[17][18][19][20] Electrochemical detection relies on electrode supporting materials, such as glassy carbon (GC), which is extensively used due to its ability to adsorb carbonaceous materials like graphene oxide, [20] multiwalled carbon nanotubes, [18,22] and hierarchical porous carbon. [19,20] GC electrodes can also be modified with aromatic molecules like quinones, conferring them an enhanced response and in situ stability, making them attractive devices for water pollution detection.…”

Section: Introductionmentioning

confidence: 99%

“…[7,[17][18][19][20] Electrochemical detection relies on electrode supporting materials, such as glassy carbon (GC), which is extensively used due to its ability to adsorb carbonaceous materials like graphene oxide, [20] multiwalled carbon nanotubes, [18,22] and hierarchical porous carbon. [19,20] GC electrodes can also be modified with aromatic molecules like quinones, conferring them an enhanced response and in situ stability, making them attractive devices for water pollution detection. [23,24] A high profile example of carbon materials modified with quinones is the 9,10-phenanthroquinone adsorbed on carbon nanotubes, which has recently been used as an electrochemical sensing platform for blood serum sulphide detection, exhibiting a detection range of 1-100 μmol L -1 .…”

Section: Introductionmentioning

confidence: 99%

Monitoring WAD Cyanide Concentration in River Waters with a Glassy Carbon Electrode Modified with 9,10-Phenanthroquinone

Cardenas-Riojas,

Calderon-Zavaleta,

Quiroz-Aguinaga

et al. 2023

Preprint

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Heavy metal-containing industrial effluent streams from electroplating and metalworking industries represent a major environmental issue. They contain metal cyanide complexes ([Ni(CN)4]2- and [Cu(CN)3]2-) referred to as weak acid dissociable cyanide (CN-WAD), which require continuous in situ monitoring. In this scenario, a glassy carbon (GC) electrode superficially decorated with 9,10-phenanthroquinone (FNQ) is manufactured and employed for the simultaneous electrochemical monitoring of cyanide WAD complexes. The interaction between GC and FNQ was characterized by Raman and electrochemical impedance spectroscopies, cyclic voltammetry, and chronocoulometry. The electrochemical evaluation was conducted by differential pulse voltammetry (DPV) and CV. The GC/FNQ electrochemical sensor simultaneously detected cyanide complexes with an average linear range of 9.09 - 92.8 μmol L-1, and a detection limit of 1.47 ± 0.11 μmol L-1 and 1.2 ± 0.6 μmol L-1 for [Ni(CN)4]2- and [Cu(CN)3]2-, respectively. The sensor demonstrated remarkable selectivity in the presence of multiple interfering species with a percentage variation range of 89.2-109.4%. Moreover, a computational DFT study provided valuable insights into the electrode/electrolyte interface. Finally, the developed sensor was applied for the electrochemical detection of WAD cyanide in river water samples.

show abstract

Sensor Potenciométrico Basado en Nanopartículas De Sulfuro De Plata Soportadas en Materiales Carbonosos Para La Detección De Cianuro Libre

Cited by 2 publications

References 20 publications

Monitoring WAD cyanide concentration in river waters with a glassy carbon electrode modified with 9,10‐Phenanthroquinone

Monitoring WAD cyanide concentration in river waters with a glassy carbon electrode modified with 9,10‐Phenanthroquinone

Monitoring WAD Cyanide Concentration in River Waters with a Glassy Carbon Electrode Modified with 9,10-Phenanthroquinone

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