Synthesis and enhanced electrochemical properties of AuNPs@MoS2/rGO hybrid structures for highly sensitive nitrite detection

Yang, Ying; Qian, Lei; Li, Jun; Hong, Cheng; Zhao, Zhenting; Xu, Huibin; Hu, Jie

doi:10.1016/j.microc.2021.106904

Cited by 42 publications

(17 citation statements)

References 39 publications

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“…Thus, the g-C 3 N 4 /Bi 2 S 3 -adapted electrode is recommended and preferred for NO 2 – detection. The obtained results are compared with previously reported NO 2 – detections in Table . − …”

Section: Resultsmentioning

confidence: 70%

Sea-Urchin-Like Bi₂S₃ Microstructures Decorated with Graphitic Carbon Nitride Nanosheets for Use in Food Preservation

Kogularasu

Sriram

Wang

et al. 2022

ACS Appl. Nano Mater.

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Although nitrite (NO2 –) is listed as a poisonous inorganic pollutant that is dangerous to humans and other creatures, it is widely used in food preservatives and agricultural products. It is frequently detected in many foods, water, environmental systems, and biological samples. In recent times, many techniques for detecting and monitoring NO2 – have been proposed. Among them, the electrochemical method has been receiving particular attention due to its ease of operation. At the same time, nanocrystals of metal sulfide materials have gained the attention of researchers due to a wide range of materials with efficiently tunable properties. This article presents a rational hydrothermal approach to the synthesis of size- and morphology-controlled hierarchically grown bismuth sulfide (Bi2S3) nanorods. Changes are made to the prime parameter; temperature yields the g-C3N4 nanosheets covered on the sea-urchin-like structure of Bi2S3 nanorods. The textural characteristics, surface morphology, and chemical compositions of g-C3N4/Bi2S3 have been studied using a selection of spectroscopic methods. Accordingly, the produced catalysts were examined to detect the electrochemically active NO2 –. The g-C3N4/Bi2S3-modified electrode attained a broad linear range (0.001–385.4 μM) and a higher sensitivity with a lower detection limit (0.4 nM). Therefore, g-C3N4/Bi2S3 hierarchically grown through the hydrothermal route could be a promising sensing platform to determine NO2 – in real-time.

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Section: Resultsmentioning

confidence: 70%

Sea-Urchin-Like Bi₂S₃ Microstructures Decorated with Graphitic Carbon Nitride Nanosheets for Use in Food Preservation

Kogularasu

Sriram

Wang

et al. 2022

ACS Appl. Nano Mater.

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“…4A) and AuNPs@MoS 2 /rGO/GCE (curve d of Fig. 4A) were applied to 1.0 mM [Fe(CN) 6 ] 3-/4-, boosted square wave currents (ISWs) were observed owing to MoS 2 /rGO composite's high conductivity [23] and the synergistic effect between AuNPs and MoS 2 / rGO composite [25]. In addition, AuNPs's electrical conductivity delivered an enhancement in the sensor signals [53].…”

Section: Assessment Of the Electrochemical Performance Of The Sensor ...mentioning

confidence: 98%

“…Furthermore, the strong peak at 285.11 eV and the weak peak at 285.93 eV on the C1s spectrum corresponded to the sp 2 hybridized graphitic carbon (CeC) group and the remained oxygen-containing (CeO) functional groups, respectively (Fig. S7D) [25,51].…”

Section: Characterizations Of Aunps@mos 2 /Rgomentioning

confidence: 99%

“…In addition, Graphene and MoS 2 nanocomposites with metal nanoparticles can improve the rate of electron transport, resulting in high sensitivity [23,24]. For instance, AuNPs@MoS 2 /rGO nanocomposite was fabricated by the hydrothermal and chemical reduction techniques for nitrite determination, and the LOD of 0.038 mM was achieved [25]. While a considerable focus has been paid on the graphene/graphene oxide and MoS 2 nanostructures, several studies on AuNPs@MoS 2 /rGO as an electrode platform have been also presented.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical neuron-specific enolase (NSE) immunosensor based on CoFe2O4@Ag nanocomposite and AuNPs@MoS2/rGO

Karaman

Bölükbaşı

Yola

et al. 2022

Analytica Chimica Acta

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“…The quantification of nitrite in environmental water supply samples is an important procedure to monitor and control the increase of NO 2 − in water resources and avoid possible poisoning [ 18 , 23 , 24 ]. Nitrite can be determined by spectrophotometric measurements through different methodologies including nitrosation-based [ 25 ], catalytic [ 26 ], and Griess reaction [ 14 ] assays.…”

Section: Introductionmentioning

confidence: 99%

Nitrite Determination in Environmental Water Samples Using Microchip Electrophoresis Coupled with Amperometric Detection

et al. 2022

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Nitrite is considered an important target analyte for environmental monitoring. In water resources, nitrite is the result of the nitrogen cycle and the leaching processes of pesticides based on nitrogenous compounds. A high concentration of nitrite can be associated with intoxication processes and metabolic disorders in humans. The present study describes the development of a portable analytical methodology based on microchip electrophoresis coupled with amperometric detection for the determination of nitrite in environmental water samples. Electrophoretic and detection conditions were optimized, and the best separations were achieved within 60 s by employing a mixture of 30 mmol L−1 lactic acid and 15 mmol L−1 histidine (pH = 3.8) as a running buffer applying 0.7 V to the working electrode (versus Pt) for amperometric measurements. The developed methodology revealed a satisfactory linear behavior in the concentration range between 20 and 80 μmolL−1 (R2 = 0.999) with a limit of detection of 1.3 μmolL−1. The nitrite concentration was determined in five water samples and the achieved values ranged from (28.7 ± 1.6) to (67.1 ± 0.5) µmol L−1. The data showed that using the proposed methodology revealed satisfactory recovery values (83.5–103.8%) and is in good agreement with the reference technique. Due to its low sample consumption, portability potential, high analytical frequency, and instrumental simplicity, the developed methodology may be considered a promising strategy to monitor and quantitatively determine nitrite in environmental samples.

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Synthesis and enhanced electrochemical properties of AuNPs@MoS2/rGO hybrid structures for highly sensitive nitrite detection

Cited by 42 publications

References 39 publications

Sea-Urchin-Like Bi₂S₃ Microstructures Decorated with Graphitic Carbon Nitride Nanosheets for Use in Food Preservation

Sea-Urchin-Like Bi₂S₃ Microstructures Decorated with Graphitic Carbon Nitride Nanosheets for Use in Food Preservation

Electrochemical neuron-specific enolase (NSE) immunosensor based on CoFe2O4@Ag nanocomposite and AuNPs@MoS2/rGO

Nitrite Determination in Environmental Water Samples Using Microchip Electrophoresis Coupled with Amperometric Detection

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Synthesis and enhanced electrochemical properties of AuNPs@MoS2/rGO hybrid structures for highly sensitive nitrite detection

Cited by 42 publications

References 39 publications

Sea-Urchin-Like Bi2S3 Microstructures Decorated with Graphitic Carbon Nitride Nanosheets for Use in Food Preservation

Sea-Urchin-Like Bi2S3 Microstructures Decorated with Graphitic Carbon Nitride Nanosheets for Use in Food Preservation

Electrochemical neuron-specific enolase (NSE) immunosensor based on CoFe2O4@Ag nanocomposite and AuNPs@MoS2/rGO

Nitrite Determination in Environmental Water Samples Using Microchip Electrophoresis Coupled with Amperometric Detection

Contact Info

Product

Resources

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Sea-Urchin-Like Bi₂S₃ Microstructures Decorated with Graphitic Carbon Nitride Nanosheets for Use in Food Preservation

Sea-Urchin-Like Bi₂S₃ Microstructures Decorated with Graphitic Carbon Nitride Nanosheets for Use in Food Preservation