A novel electrochemical sensor based on silver/halloysite nanotube/molybdenum disulfide nanocomposite for efficient nitrite sensing

Ghanei-Motlagh, Masoud; Taher, Mohammad Ali

doi:10.1016/j.bios.2018.02.057

Cited by 188 publications

(62 citation statements)

References 66 publications

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“…On the other hand, several electrochemical sensors for nitrite were developed by modification of conventional solid electrodes (i. e., glassy carbon electrodes) with various nanomaterials . Likewise, MoX 2 (i. e., MoS 2 ) based composites synthesized in multisteps were used for electrochemical detection of nitrite but not MoSe 2 based heterostructure. In the current work, we hydrothermally synthesized the MoSe 2 −MoO 3 composite in a single step and characterized.…”

Section: Introductionsupporting

confidence: 89%

“…The higher mechanical strength is attributed to the strong covalent bond and the weak Vander wall interactions also offers the bulk material exfoliation to produce the few or single layers of 2D MoX 2 . Such single or few layered 2D MoS 2 and MoSe 2 have been extended for the various electrochemical applications . Comparatively, MoSe 2 exhibits the higher electro catalytic activity and electrical conductivity than MoS 2 because of the superior metallic property with electrocatalytic active unsaturated edge of Se Thus, MoSe 2 is extended for catalysis, optoelectronics and supercapacitor application .…”

Section: Introductionmentioning

confidence: 99%

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Single Step Synthesis of MoSe₂−MoO₃ Heterostructure for Highly Sensitive Amperometric Detection of Nitrite in Water Samples of Industrial Areas

Vishnu

Badhulika

2019

Electroanalysis

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The present work reports a simple and single‐step hydrothermal synthesis of MoSe2−MoO3 composite for highly sensitive and selective electrochemical oxidation of nitrite. FESEM of the MoSe2−MoO3 hybrid revealed the formation of composite as laminated structure of different sizes piled up together as finger‐like MoSe2 bars whilst other physico‐chemical characterizations (XRD, FTIR, UV‐Vis, XPS) confirmed that co‐existence of MoO3 as a major by‐product of hydrothermal synthesis. The as‐fabricated MoSe2−MoO3 composite based nitrite sensor showed remarkable selectivity and reproducibility with <3s of response time, excellent sensitivity and detection limit of 10.84 A M−1 cm−2 (R2=0.996) and 0.1 μM, respectively, in the range of 2.5–80 μM. The obtained sensitivity can be credited to the high surface area obtained from 1T phase MoSe2 and α phase MoO3 as the sensing material. The developed sensor was effectively evaluated for electrochemical recognition of nitrite in the water samples (potable and tap water) gathered from an industrial area. This new and efficient MoSe2−MoO3 based electrode material offers a new frontier for the progress of a novel composites by simple and single‐step approach which can be used for progress of non‐enzymatic and inexpensive electrochemical sensors for a wide range of analytical applications.

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Section: Introductionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Single Step Synthesis of MoSe₂−MoO₃ Heterostructure for Highly Sensitive Amperometric Detection of Nitrite in Water Samples of Industrial Areas

Vishnu

Badhulika

2019

Electroanalysis

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“…Although the analytical performance of GO-CS-AuNPs/GCE is slightly weaker than these reported biosensors [ 2 , 22 , 24 , 30 , 31 , 32 ], the preparation process of GO-CS-AuNPs/GCE is relatively simple and the selectivity is high. Moreover, the detection limit of our proposed GO-CS-AuNPs/GCE is lower than other reported biosensors [ 33 , 34 , 35 , 36 , 37 , 38 ].…”

Section: Resultsmentioning

confidence: 64%

Electrochemical Determination of Nitrite by Au Nanoparticle/Graphene-Chitosan Modified Electrode

Yuan

Yan

et al. 2018

Sensors

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A highly sensitive nitrite (NO2−) electrochemical sensor is fabricated using glassy carbon electrode modified with Au nanoparticle and grapheme oxide. Briefly, this electrochemical sensor was prepared by drop-coating graphene oxide-chitosan mixed film on the surface of the electrode and then electrodepositing a layer of Au nanoparticle using cyclic voltammetry. The electrochemical behavior of NO2− on the sensor was investigated by cyclic voltammetry and amperometric i-t curve. The results showed that the sensor exhibited better electrocatalytic activity for NO2− in 0.1 mol/L phosphate buffer solution (PBS) (pH 5.0). The oxidation peak current was positively correlated with NO2− concentration in the ranges of 0.9 µM to 18.9 µM. The detection limit was estimated to be 0.3 µM. In addition, the interference of some common ions (e.g., NO3−, CO32−, SO42−, Cl−, Ca2+ and Mg2+) and oxidizable compound including sodium sulfite and ascorbic acid in the detection of nitrite was also studied. The results show that this sensor is more sensitive and selective to NO2−. Therefore, this electrochemical sensor provided an effective tool for the detection of NO2−.

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“…A comparison on sensing performances between reported electrodes and NaCS/PDMDAAC/GCE is summarized on the Table 1 . The sensing performances (in terms of linear response range and limit of detection) of the NaCS/PDMDAAC/GCE are at least comparable to, and even better than, the most reported modified electrodes [ 45 , 46 , 47 , 48 , 49 , 50 ].…”

Section: Resultsmentioning

confidence: 72%

Ultrasensitive Electrochemical Sensor Based on Polyelectrolyte Composite Film Decorated Glassy Carbon Electrode for Detection of Nitrite in Curing Food at Sub-Micromolar Level

et al. 2018

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To ensure food quality and safety, developing cost-effective, rapid and precision analytical techniques for quantitative detection of nitrite is highly desirable. Herein, a novel electrochemical sensor based on the sodium cellulose sulfate/poly (dimethyl diallyl ammonium chloride) (NaCS/PDMDAAC) composite film modified glass carbon electrode (NaCS/PDMDAAC/GCE) was proposed toward the detection of nitrite at sub-micromolar level, aiming to make full use of the inherent properties of individual component (biocompatible, low cost, good electrical conductivity for PDMDAAC; non-toxic, abundant raw materials, good film forming ability for NaCS) and synergistic enhancement effect. The NaCS/PDMDAAC/GCE was fabricated by a simple drop-casting method. Electrochemical behaviors of nitrite at NaCS/PDMDAAC/GCE were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Under optimum conditions, the NaCS/PDMDAAC/GCE exhibits a wide linear response region of 4.0 × 10−8 mol·L−1~1.5 × 10−4 mol·L−1 and a low detection 1imit of 43 nmol·L−1. The NaCS/PDMDAAC shows a synergetic enhancement effect toward the oxidation of nitrite, and the sensing performance is much better than the previous reports. Moreover, the NaCS/PDMDAAC also shows good stability and reproducibility. The NaCS/PDMDAAC/GCE was successfully applied to the determination of nitrite in ham sausage with satisfactory results.

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A novel electrochemical sensor based on silver/halloysite nanotube/molybdenum disulfide nanocomposite for efficient nitrite sensing

Cited by 188 publications

References 66 publications

Single Step Synthesis of MoSe₂−MoO₃ Heterostructure for Highly Sensitive Amperometric Detection of Nitrite in Water Samples of Industrial Areas

Single Step Synthesis of MoSe₂−MoO₃ Heterostructure for Highly Sensitive Amperometric Detection of Nitrite in Water Samples of Industrial Areas

Electrochemical Determination of Nitrite by Au Nanoparticle/Graphene-Chitosan Modified Electrode

Ultrasensitive Electrochemical Sensor Based on Polyelectrolyte Composite Film Decorated Glassy Carbon Electrode for Detection of Nitrite in Curing Food at Sub-Micromolar Level

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A novel electrochemical sensor based on silver/halloysite nanotube/molybdenum disulfide nanocomposite for efficient nitrite sensing

Cited by 188 publications

References 66 publications

Single Step Synthesis of MoSe2−MoO3 Heterostructure for Highly Sensitive Amperometric Detection of Nitrite in Water Samples of Industrial Areas

Single Step Synthesis of MoSe2−MoO3 Heterostructure for Highly Sensitive Amperometric Detection of Nitrite in Water Samples of Industrial Areas

Electrochemical Determination of Nitrite by Au Nanoparticle/Graphene-Chitosan Modified Electrode

Ultrasensitive Electrochemical Sensor Based on Polyelectrolyte Composite Film Decorated Glassy Carbon Electrode for Detection of Nitrite in Curing Food at Sub-Micromolar Level

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Single Step Synthesis of MoSe₂−MoO₃ Heterostructure for Highly Sensitive Amperometric Detection of Nitrite in Water Samples of Industrial Areas

Single Step Synthesis of MoSe₂−MoO₃ Heterostructure for Highly Sensitive Amperometric Detection of Nitrite in Water Samples of Industrial Areas