Synthesis of micro sphere-like bismuth nanoparticles by microwave assisted polyol method; designing a novel electrochemical nanosensor for ultra-trace measurement of Pb<sup>2+</sup> ions

Safardoust-Hojaghan, Hossein; Salavati‐Niasari, Masoud; Motaghedifard, Mohammad Hassan; Hosseinpour-Mashkani, S. Mostafa

doi:10.1039/c5nj00532a

Cited by 42 publications

(15 citation statements)

References 72 publications

(58 reference statements)

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“…Copper hexacyanoferrate modified PGE for L-cysteine detection was obtained by cooper electrodeposition on PGE and subsequent immersion in a K 3 [Fe(CN) 6 ] solution [ 132 ]. PGE modified with MWCNTs (multiwall carbon nanotubes) and Bi-NS obtained by microwave-assisted polyol method were used for Pb(II) determination with a LD of 1.7 nM [ 202 ]. A sensitive composite sensor for hydrazine was developed by CV deposition of Cu-NS on MWCNTs modified PGE [ 149 ].…”

Section: Discussionmentioning

confidence: 99%

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

David

Popa

Buleandră

2017

Journal of Analytical Methods in Chemistry

203

106

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Due to their electrochemical and economical characteristics, pencil graphite electrodes (PGEs) gained in recent years a large applicability to the analysis of various types of inorganic and organic compounds from very different matrices. The electrode material of this type of working electrodes is constituted by the well-known and easy commercially available graphite pencil leads. Thus, PGEs are cheap and user-friendly and can be employed as disposable electrodes avoiding the time-consuming step of solid electrodes surface cleaning between measurements. When compared to other working electrodes PGEs present lower background currents, higher sensitivity, good reproducibility, and an adjustable electroactive surface area, permitting the analysis of low concentrations and small sample volumes without any deposition/preconcentration step. Therefore, this paper presents a detailed overview of the PGEs characteristics, designs and applications of bare, and electrochemically pretreated and chemically modified PGEs along with the corresponding performance characteristics like linear range and detection limit. Techniques used for bare or modified PGEs surface characterization are also reviewed.

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Section: Discussionmentioning

confidence: 99%

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

David

Popa

Buleandră

2017

Journal of Analytical Methods in Chemistry

203

106

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“…Recently, Safardoust‐Hojaghan et al. 83 prepared microsphere like Bi‐NP through microwave assisted polyol method. To improve the sensitivity, they modified the PGE with this Bi‐NP in combination with MWCNT by drop‐drying method.…”

Section: Nanomaterial‐modified Pge For Use In Electroanalysismentioning

confidence: 99%

Recent Advances in Nanomaterial‐Modified Pencil Graphite Electrodes for Electroanalysis

et al. 2015

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Pencil graphite electrodes (PGEs) have several advantages over other carbon‐based or commercial metal electrodes, including widespread availability, very low cost, and ease of modification. To make the best use of PGEs in electroanalysis, significant recent advances in the development of different nanomaterial‐PGEs have been observed. The literature published up to mid‐2015 is summarized in the present review, with a focus on the various methodologies used to readily modify graphite pencil electrodes using nanomaterials. This review also touches on the surface characterization of these electrodes and their potential applications in a variety of electrochemical detection applications. The review outlines the scope for further research in this area and discusses the importance of surface modifications of conventional PGE electrodes using nanomaterials or a combination of nanomaterials and electroactive polymers.

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“…The response was repeatable, with a response time less than 3 seconds for a 90% change in signal. Based on the CV and amperometric data and literature, we hypothesized that FRC (NaOCl/OCl - ) responds anodically with the PGE at an optimized oxidation potential of +1.50 V. In this experiment, sample de-aeration is not required, as the applied voltage of the amperometric experiments is well outside the voltage range of dissolved oxygen [ 46 ]. The limit of detection in these experiments was found to be 46 μM, which is lower compared to the reported values of 79 and 133 μM [ 47 ].…”

Section: Resultsmentioning

confidence: 99%

Pencil graphite as electrode platform for free chlorine sensors and energy storage devices

et al. 2021

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Multifunctional and low-cost electrode materials are desirable for the next-generation sensors and energy storage applications. This paper reports the use of pencil graphite as an electrode for dual applications that include the detection of free residual chlorine using electro-oxidation process and as an electrochemical energy storage cathode. The pencil graphite is transferred to cellulose paper by drawing ten times and applied for the detection of free residual chlorine, which shows a sensitivity of 27 μA mM-1 cm-2 with a limit of detection of 88.9 μM and linearity up to 7 mM. The sample matrix effect study for the commonly interfering ions such as NO3-, SO42-, CO32-, Cl-, HCO3- shows minimal impact on free residual chlorine detection. Pencil graphite then used after cyclic voltammogram treatment as a cathode in the aqueous Zn/Al-ion battery, showing an average discharge potential plateau of ~1.1 V, with a specific cathode capacity of ~54.1 mAh g-1 at a current of 55 mA g-1. It maintains ~95.8% of its initial efficiency after 100 cycles. Results obtained from the density functional theory calculation is consistent with the electro-oxidation process involved in the detection of free residual chlorine, as well as intercalation and de-intercalation behavior of Al3+ into the graphite layers of Zn/Al-ion battery. Therefore, pencil graphite due to its excellent electro-oxidation and conducting properties, can be successfully implemented as low cost, disposable and green material for both sensor and energy-storage applications.

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Synthesis of micro sphere-like bismuth nanoparticles by microwave assisted polyol method; designing a novel electrochemical nanosensor for ultra-trace measurement of Pb²⁺ ions

Abstract: Bi nanostructures were synthesized in the presence of propylene glycol as the solvent and surfactant through microwave method.

Cited by 42 publications

References 72 publications

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

Recent Advances in Nanomaterial‐Modified Pencil Graphite Electrodes for Electroanalysis

Pencil graphite as electrode platform for free chlorine sensors and energy storage devices

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Synthesis of micro sphere-like bismuth nanoparticles by microwave assisted polyol method; designing a novel electrochemical nanosensor for ultra-trace measurement of Pb2+ ions

Abstract: Bi nanostructures were synthesized in the presence of propylene glycol as the solvent and surfactant through microwave method.

Cited by 42 publications

References 72 publications

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

Recent Advances in Nanomaterial‐Modified Pencil Graphite Electrodes for Electroanalysis

Pencil graphite as electrode platform for free chlorine sensors and energy storage devices

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Synthesis of micro sphere-like bismuth nanoparticles by microwave assisted polyol method; designing a novel electrochemical nanosensor for ultra-trace measurement of Pb²⁺ ions