Geopolymer cement–modified carbon paste electrode: application to electroanalysis of traces of lead(II) ions in aqueous solution

Pengou, Martin; Ngassa, Guy B. P.; Boutianala, Michèle; Tchakouté, Hervé K.; Nanseu‐Njiki, Charles Péguy; Ngameni, Emmanuel

doi:10.1007/s10008-021-04897-y

Cited by 13 publications

(8 citation statements)

References 52 publications

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“…Five times increased in the current was observed after modification of carbon paste electrode. The electrode is very selective for the Pb 2+ ions which may be because of the strong interaction of Pb 2+ ions with the oxygen and hydroxyl groups present at the surface of the geopolymer cements [35] . The use of carbon cloth in wearable electronics is popular nowadays owing to its chemical stability and high surface area.…”

Section: Advances In the Development Of Non‐noble Metal‐based Sensorsmentioning

confidence: 99%

“…The electrode is very selective for the Pb 2 + ions which may be because of the strong interaction of Pb 2 + ions with the oxygen and hydroxyl groups present at the surface of the geopolymer cements. [35] The use of carbon cloth in wearable electronics is popular nowadays owing to its chemical stability and high surface area. Shi et al have demonstrated the use of carbon cloth in simultaneous detection of metals and a very small dimension cloth of 5 mm size can detect Cd 2 + and Pb 2 + ions.…”

Section: Carbon Cement and Clothmentioning

confidence: 99%

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Disposable Sensors for Heavy Metals Detection: A Review of Carbon and Non‐Noble Metal‐Based Receptors

Dahake

Bansiwal

2022

ChemistrySelect

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Heavy metals and metalloid pollution poses a severe threat to the environment and human health. Various anthropogenic sources are responsible for the release of these contaminants into the water and food chain of humans and animals. To protect the environment and human health, the detection of heavy metals in various environmental matrices becomes vital. Sophisticated lab-based instruments require more time, effort, and huge investments which warrants the requirement of fieldbased disposable sensors. Various optical and electrochemical sensors are reported to demonstrate good sensitivity, selectivity, and detection limits (LOD). The disposable electrodes comprised of glass, paper, plastic, and fabric are gaining importance owing to the ease of application in field analysis, reproducibility, and low cost. The majority of these sensors are based on noble/precious metals namely gold, silver, and platinum. However, limited availability and high cost of these receptors restrict wide spread applicability of these sensors. Numerous earth-abundant materials and non-noble metalbased sensors are also evolving recently due to several advantages namely large-scale availability, ease of modifications, stability, and shelf life which overcomes the limitations of noble/precious metals-based sensors. The present review provides a review of recent advances in various non-noble and earth-abundant micro and nanomaterials used as receptors in optical and electrochemical biosensors for the detection of metals/metalloids in various matrices. The review also highlights the strategies for the design and fabrication of disposable electrodes, their modification methods, detection strategy, and mechanism involved in the detection of heavy metals. Various gaps existing in the reported sensor systems and future perspectives are also delineated in the present manuscript.

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Section: Advances In the Development Of Non‐noble Metal‐based Sensorsmentioning

confidence: 99%

Section: Carbon Cement and Clothmentioning

confidence: 99%

Disposable Sensors for Heavy Metals Detection: A Review of Carbon and Non‐Noble Metal‐Based Receptors

Dahake

Bansiwal

2022

ChemistrySelect

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“…Because of their attractive structure and suitable properties, MOFs electrodes and MOFs modified carbon-based electrodes were used for electrochemical sensing of several analytes [ 12 ], such as heavy metals [ 12 , 13 , 14 , 15 , 16 , 17 ], nitrogen compounds [ 18 ], glucose [ 12 ], dopamine [ 19 ], ascorbic acid [ 12 ], etc. For instance, the Zr-based MOF UiO-66, as well as its carbonized form (CUiO-66), were examined as electrodes for Cd 2+ and Pb 2+ ions detection by square wave ASV [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Sensing of Cadmium and Lead Ions in Water by MOF-5/PANI Composites

Milikić,

Savić,

Janošević Ležaić

et al. 2024

Polymers

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For the first time, composites of metal-organic framework MOF-5 and conjugated polymer polyaniline (PANI), (MOF-5/PANI), prepared using PANI in its conducting (emeraldine salt, ES) or nonconducting form (emeraldine base, EB) at various MOF-5 and PANI mass ratios, were evaluated as electrode materials for the electrochemical detection of cadmium (Cd2+) and lead (Pb2+) ions in aqueous solutions. Testing of individual components of composites, PANI-ES, PANI-EB, and MOF-5, was also performed for comparison. Materials are characterized by Raman spectroscopy, scanning electron microscopy (SEM) and dynamic light scattering (DLS), and their electrochemical behavior was discussed in terms of their zeta potential, structural, morphology, and textural properties. All examined composites showed high electrocatalytic activity for the oxidation of Cd and Pb to Cd2+ and Pb2+, respectively. The MOF/EB-1 composite (71.0 wt.% MOF-5) gave the highest oxidation currents during both individual and simultaneous detection of two heavy metal ions. Current densities recorded with MOF/EB-1 were also higher than those of its individual components, reflecting the synergistic effect where MOF-5 offers high surface area for two heavy metals adsorption and PANI offers a network for electron transfer during metals’ subsequent oxidation. Limits of detection using MOF/EB-1 electrode for Cd2+ and Pb2+ sensing were found to be as low as 0.077 ppm and 0.033 ppm, respectively. Moreover, the well-defined and intense peaks of Cd oxidation to Cd2+ and somewhat lower peaks of Pb oxidation to Pb2+ were observed at voltammograms obtained for the Danube River as a real sample with no pretreatment, which implies that herein tested MOF-5/PANI electrodes could be used as electrochemical sensors for the detection of heavy metal ions in the real water samples.

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“…The second approach is used mainly when electrodes are modified with complexation groups involving the interaction between the electrode surface and the metal ions (high selectivity). [10][11][12] Efforts have been made to improve the sorption level of metal ions at the electrode surfaces. One approach to enhance metal ion accumulation is through photoirradiation.…”

Section: Introductionmentioning

confidence: 99%

Cu(ii) and Hg(ii) detection under photo-assisted accumulation in an open circuit potential at a polyazulene–EDTA like modified electrode

Pîrvu

Stanciu

Buica

2022

Analyst

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Geopolymer cement–modified carbon paste electrode: application to electroanalysis of traces of lead(II) ions in aqueous solution

Cited by 13 publications

References 52 publications

Disposable Sensors for Heavy Metals Detection: A Review of Carbon and Non‐Noble Metal‐Based Receptors

Disposable Sensors for Heavy Metals Detection: A Review of Carbon and Non‐Noble Metal‐Based Receptors

Electrochemical Sensing of Cadmium and Lead Ions in Water by MOF-5/PANI Composites

Cu(ii) and Hg(ii) detection under photo-assisted accumulation in an open circuit potential at a polyazulene–EDTA like modified electrode

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