A facile synthesis of Sn-doped CeO2 nanoparticles: High performance electrochemical nitrite sensing application

Manibalan, Gunasekaran; Murugadoss, Govindhasamy; Hazra, Subhenjit; Marimuthu, R.; Manikandan, Chitrarasu; Ramalingam, R. Jothi; Kumar, Manavalan Rajesh

doi:10.1016/j.inoche.2021.109096

Cited by 18 publications

(12 citation statements)

References 35 publications

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“…In the case of PGZrP/GCE, a sharp and more precise oxidation peak was observed, and the oxidation peak potential of nitrite was reduced to 0.85 V, mostly due to the increased electroconductivity and electrocatalytic activity The electrochemical oxidation of nitrite at PGZrP revealed a two-electron relocation process with the reaction mechanism given in Figure 2C. The exchange current density (j 0 ) 42 of all the modified electrodes was calculated using eq 5 (5) where R is the gas constant (8.314 J K −1 ), T is the temperature (298 K), n is the number of transferred electrons, F is the Faraday constant (96485 C/mol), and A is the effective surface area. The j 0 values of the modified electrodes ZrP/GCE, PG/ GCE, and PGZrP/GCE were 0.015, 61, and 64 μA/cm 2 , respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Additionally, it is also used as an additive in meat products to enhance flavor and lengthen the shelf life . Nitrite is frequently used as a fertilizer in agriculture, and the unused nitrite is widely distributed in the soil and water, where it can cause toxic ill effects . Nitrite is a potent oxidizing agent that interacts with secondary amines to create teratogenetic and carcinogenic nitrosamines, which are easily capable of causing gastric and esophageal cancer. , Additionally, it can lower blood pressure and prevent the delivery of oxygen to every part of the body.…”

Section: Introductionmentioning

confidence: 99%

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Zirconium Phosphate-Incorporated Polyaniline–Graphene Oxide Composite Modified Electrodes for Effective and Selective Detection of Nitrite

Valsalakumar,

Vasudevan

2023

Langmuir

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Nitrite contamination in food, water, and environmental samples poses a substantial health hazard, owing to its capacity for transformation into carcinogenic compounds. Given the profound ecological and physiological implications, precise and highly sensitive surveillance of nitrite has emerged as an imperative area of concern, addressing the substantial detrimental impact that it can have on both terrestrial and aquatic ecosystems. The novel electroactive polyaniline−graphene oxide composite, incorporating hexagonal zirconium phosphate discs (PGZrP), was systematically engineered as a foundation for an advanced electrochemical sensor, enabling precise nitrite detection in diverse aqueous and biological matrices. At a specific potential peak of +0.85 V, observed within a pH 7.0 phosphate buffer solution, the PGZrP-modified glassy carbon electrode (GCE) exhibited exceptional electrocatalytic proficiency in the sensing nitrite ions (NO 2 − ), surpassing the performance of alternative electrode configurations, including the zirconium phosphate-modified GCE (ZrP/GCE), graphene oxidemodified GCE (GO/GCE), polyaniline−graphene oxide-modified GCE (PG/GCE), and the unmodified bare glassy carbon electrode. The constructed sensor demonstrated an impressive limit of detection at 80 nM along with a broad and linear detection range spanning from 124 nM to 40 mM. The synergistic effect created by the close contact between ZrP and PG, which resulted in a well-enhanced electrochemical sensing capability, was responsible for this exceptional activity. The developed sensor exhibited an enhanced electrochemical performance characterized by an extended operational range, a heightened detection threshold, and exceptional sensitivity. The PGZrP/GCE sensor, as fabricated, consistently demonstrated commendable operational stability, robust reproducibility, and remarkable repeatability in its capacity for nitrite detection. Furthermore, its successful application in the precise quantification of nitrite levels within environmental water samples and blood specimens showcased an impressive recovery rate, establishing it as a promising tool for diverse analytical applications. These findings indicate the promising potential of the PGZrP composite for integration into electrochemical devices designed to deliver rapid response times, heightened sensitivity, and sustained stability, thereby placing it as a potential candidate for the production of cutting-edge sensors, particularly those employed for the precise recognition of nitrite in aquatic and biological specimens.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zirconium Phosphate-Incorporated Polyaniline–Graphene Oxide Composite Modified Electrodes for Effective and Selective Detection of Nitrite

Valsalakumar,

Vasudevan

2023

Langmuir

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“…It is also noted that the CV curves of the Sn-CeO 2 show improved capacitance compared to the pure CeO 2 -modified electrodes [30][31][32]. Manibalan et al [33] reported that the Sn-doped CeO 2 /GCE cyclic has an electrocatalytic activity for nitrite oxidation. Ibrahim et al demonstrated that the nano-Sn-CeO 2 incorporated GCPE had significant enhancement peak current of DTIC due to the excellent characteristics of nano-Sn-CeO 2 such as high chemical stability and high surface area, good electrical conductivity, etc.…”

Section: Electrochemical Measurementmentioning

confidence: 97%

Electrochemical Activity of Pure and Sn-Doped CeO<sub>2</sub> Nanoparticles using Simple Chemical Precipitation Method

Anandalakshmi

Venkatachalam

Venugobal³

2023

J. Sci. Res.

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In the present work, pure and Sn-doped CeO2 nanoparticles (NPs) were synthesized by the chemical precipitation method calcined at 400 ºC for 4 h. Characterization of NPs was done through X-ray diffraction (XRD), UV-visible, photoluminescence (PL), Fourier transform infrared (FTIR) spectroscopy and high-resolution electron microscope (HRTEM) techniques. The XRD study revealed the crystalline nature, size, and structure of the prepared NPs. The HRTEM results illustrated cubic structure. The UV–visible and PL studies were used to measure the optical behaviors of CeO2 NPs. The UV-visible showed that the bandgap value of CeO2 NPs increased from 3.61 to 3.65 eV for different doping concentrations. The XRD study exhibited that the size of the CeO2 NPs reduced from 11.03 to 7.91 nm. From the TEM analysis, the average size of undoped and 10% Sn-doped CeO2 NPs was calculated as 9.3 and 7 nm, respectively. A cyclic voltammetric study confirmed that Sn-doped CeO2 exhibited a higher specific capacitance value than the pure CeO2. The chemical precipitation method observed excellent redox and oxidation behavior were observed for Sn-CeO2 NPs by the cyclic voltammetric study. The significant enhancement in the specific capacitance suggested that Sn-doped CeO2 is a promising material for supercapacitor applications.

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“…The 1% Sn-doped ceria exhibited the highest scavenging efficiency, while the undoped ceria had the least activity, and this was attributed to their band gap energy; the undoped ceria has the highest value, while the 1% Sn-doped ceria had the lowest value. Furthermore, Sn-doped ceria was prepared by the precipitation method and tested as an electrochemical sensor for nitrites in water . The Sn-doped ceria particles had a spherical shape and an average diameter of 8.5 nm and were highly sensitive toward nitrite ions, exhibiting excellent electrocatalytic oxidation of NO 2 – and a very low detection limit of 16 nM.…”

Section: Doped Ceria Nanomaterialsmentioning

confidence: 99%

Doped Ceria Nanomaterials: Preparation, Properties, and Uses

Abdulwahab,

Khan,

Jennings

2023

ACS Omega

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Doping is a powerful strategy for enhancing the performance of ceria (CeO2) nanomaterials in a range of catalytic, photocatalytic, biomedical, and energy applications. The present review summarizes recent developments in the doping of ceria nanomaterials with metal and non-metal dopants for selected applications. The most important metal dopants are grouped into s, p, d, and f block elements, and the relevant synthetic methods, novel properties, and key applications of metal doped ceria are collated and critically discussed. Non-metal dopants are similarly examined and compared with metal dopants using the same performance criteria. The review reveals that non-metal (N, S, P, F, and Cl) doped ceria has mainly been synthesized by calcination and hydrothermal methods, and it has found applications mostly in photocatalysis or as a cathode material for LiS batteries. In contrast, metal doped ceria nanomaterials have been prepared by a wider range of synthetic routes and evaluated for a larger number of applications, including as catalysts or photocatalysts, as antibacterial agents, and in devices such as fuel cells, gas sensors, and colorimetric detectors. Dual/co-doped ceria containing both metals and non-metals are also reviewed, and it is found that co-doping often leads to improved properties compared with single-element doping. The review concludes with a future outlook that identifies unaddressed issues in the synthesis and applications of doped ceria nanomaterials.

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A facile synthesis of Sn-doped CeO2 nanoparticles: High performance electrochemical nitrite sensing application

Cited by 18 publications

References 35 publications

Zirconium Phosphate-Incorporated Polyaniline–Graphene Oxide Composite Modified Electrodes for Effective and Selective Detection of Nitrite

Zirconium Phosphate-Incorporated Polyaniline–Graphene Oxide Composite Modified Electrodes for Effective and Selective Detection of Nitrite

Electrochemical Activity of Pure and Sn-Doped CeO<sub>2</sub> Nanoparticles using Simple Chemical Precipitation Method

Doped Ceria Nanomaterials: Preparation, Properties, and Uses

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