Signal-on electrochemical aptasensor for sensitive detection of sulfamethazine based on carbon quantum dots/tungsten disulfide nanocomposites

Gong, Chengju; Zhu, Yahui; Wang, Qianqian; Geng, Liping

doi:10.1016/j.electacta.2021.139054

Cited by 19 publications

(11 citation statements)

References 41 publications

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“…Recently, transition-metal tungstates (MWO 4 ; M = Ni, Co, Ce, La, and Cu) were considered prospective alternatives for existing noble metal-based electrodes in electrochemical energy storage, energy conversion, and sensing applications. − However, MWO 4 suffers from poor electrical conductivity and electrochemical stability. In addition, the as-prepared MWO 4 materials frequently degrade during prolonged cycling, resulting in poor sensing performances. − To address these issues, various approaches to support the active MWO 4 species with a conductive carbon support reduce aggregation and boost the electron/ion transport kinetics, which effectively enhances the sensing performances with high selectivity and durability. − Graphene has been distinguished as one of the best supports to anchor active MWO 4 species due to its ultrathin nature and high electrical conductivity. , Compared to graphene, graphitic carbon nanosheets (g-C 3 N 4 ) have recently gained attention in the scientific community due to their high surface area and unique porous networks. − Most specifically, g-C 3 N 4 is active in adjusting the electronic properties, which is a suitable support to anchor the dynamic mixed metal oxide species with enhanced selectivity and electrochemical stability. − Hence, the rational design of MWO 4 anchored g-C 3 N 4 hybrid with numerous electroactive sites and exceptional durability through a straightforward approach is attractive in sensing applications.…”

Section: Introductionmentioning

confidence: 99%

Graphitic Carbon Nitride Nanosheets Decorated with Strontium Tungstate Nanospheres as an Electrochemical Transducer for Sulfamethazine Sensing

Govindaraj

Rajendran

et al. 2023

ACS Appl. Nano Mater.

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Sulfamethazine (SMZ) is one of the most frequently utilized sulfonamides, and it is regularly found in animal-derived foods, posing a health risk. Hence, developing a quick, easy, selective, and sensitive analytical method for on-site detection of SMZ is essential for improving food safety. Recently, transition-metal oxides have attracted great interest as promising sensors for detecting sulfamethazine due to their superior redox behavior, electrochemical activity, and electroactive sites. However, they tremendously suffer from poor electrical conductivity and electrochemical stability, which limits their commercial reality. Herein, a highly selective sensor consisting of two-dimensional (2D) graphitic carbon nitride nanosheet (g-C 3 N 4 ) networks anchored to strontium tungstate nanospheres (denoted as SrWO 4 /g-C 3 N 4 ) is developed for nonenzymatic sulfamethazine detection. When employed as the sensing platform, the SrWO 4 / g-C 3 N 4 hybrid shows enhanced sensing performance with a fast response time, high sensitivity, low detection limit of 0.0059 μM, wide detection ranges from 0.2 to 600 μM, and prolonged cycle life of over 30 days. The sensor performs well in sulfamethazine in real sample analysis, reflecting its practical applicability. Such a performance may be attributed to the numerous electroactive sites, confined electronic structures, and high synergistic interaction between active SrWO 4 species and the g-C 3 N 4 matrix. This work demonstrates an innovative protocol for developing SrWO 4 /g-C 3 N 4 -based sensing platforms with nanoscale architectures and high interface configurations.

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Section: Introductionmentioning

confidence: 99%

Graphitic Carbon Nitride Nanosheets Decorated with Strontium Tungstate Nanospheres as an Electrochemical Transducer for Sulfamethazine Sensing

Govindaraj

Rajendran

et al. 2023

ACS Appl. Nano Mater.

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“…Antibiotics are medicines broadly used to treat or prevent bacterial infections in microorganisms as well as growth promoters in animal husbandry and aquaculture, which have been identified as significant pollutants in water [ 14 , 15 ]. Nitrofurantoin (NF) is one of the most commonly used nitrofuran antibiotics for the treatment of skin sensitizer, amebicide, fungicide, coccidiosis infections, bladder cancer, anti-inflammatory, and infections in the urinary tract [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Zinc Oxide/Phosphorus-Doped Carbon Nitride Composite as Potential Scaffold for Electrochemical Detection of Nitrofurantoin

et al. 2022

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Herein, we present an electrocatalyst constructed by zinc oxide hexagonal prisms/phosphorus-doped carbon nitride wrinkles (ZnO HPs/P-CN) prepared via a facile sonochemical method towards the detection of nitrofurantoin (NF). The ZnO HPs/P-CN-sensing platform showed amplified response and low-peak potential compared with other electrodes. The exceptional electrochemical performance could be credited to ideal architecture, rapid electron/charge transfer, good conductivity, and abundant active sites in the ZnO HPs/P-CN composite. Resulting from these merits, the ZnO HPs/P-CN-modified electrode delivered rapid response (2 s), a low detection limit (2 nM), good linear range (0.01–111 µM), high sensitivity (4.62 µA µM−1 cm2), better selectivity, decent stability (±97.6%), and reproducibility towards electrochemical detection of NF. We further demonstrated the feasibility of the proposed ZnO HPs/P-CN sensor for detecting NF in samples of water and human urine. All the above features make our proposed ZnO HPs/P-CN sensor a most promising probe for detecting NF in natural samples.

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“…For example, CDs could be combined with gold nanoclusters to achieve intracellular temperature detection, [ 100 ] with 2D transition metal carbides (MXenes) to prepare supercapacitors, [ 101 ] or with tungsten disulfide to prepare electrochemical sensors. [ 102 ]…”

Section: Overview Of Supramolecular Interactions and Their Characteri...mentioning

confidence: 99%

Supramolecular Chemistry of Carbon‐Based Dots Offers Widespread Opportunities

Arcudi

Đorđević

2023

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Carbon dots are an emerging class of nanomaterials that has recently attracted considerable attention for applications that span from biomedicine to energy. These photoluminescent carbon nanoparticles are defined by characteristic sizes of <10 nm, a carbon‐based core and various functional groups at their surface. Although the surface groups are widely used to establish non‐covalent bonds (through electrostatic interactions, coordinative bonds, and hydrogen bonds) with various other (bio)molecules and polymers, the carbonaceous core could also establish non‐covalent bonds (ππ stacking or hydrophobic interactions) with π‐extended or apolar compounds. The surface functional groups, in addition, can be modified by various post‐synthetic chemical procedures to fine‐tune the supramolecular interactions. Our contribution categorizes and analyzes the interactions that are commonly used to engineer carbon dots‐based materials and discusses how they have allowed preparation of functional assemblies and architectures used for sensing, (bio)imaging, therapeutic applications, catalysis, and devices. Using non‐covalent interactions as a bottom‐up approach to prepare carbon dots‐based assemblies and composites can exploit the unique features of supramolecular chemistry, which include adaptability, tunability, and stimuli‐responsiveness due to the dynamic nature of the non‐covalent interactions. It is expected that focusing on the various supramolecular possibilities will influence the future development of this class of nanomaterials.

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Signal-on electrochemical aptasensor for sensitive detection of sulfamethazine based on carbon quantum dots/tungsten disulfide nanocomposites

Cited by 19 publications

References 41 publications

Graphitic Carbon Nitride Nanosheets Decorated with Strontium Tungstate Nanospheres as an Electrochemical Transducer for Sulfamethazine Sensing

Graphitic Carbon Nitride Nanosheets Decorated with Strontium Tungstate Nanospheres as an Electrochemical Transducer for Sulfamethazine Sensing

Zinc Oxide/Phosphorus-Doped Carbon Nitride Composite as Potential Scaffold for Electrochemical Detection of Nitrofurantoin

Supramolecular Chemistry of Carbon‐Based Dots Offers Widespread Opportunities

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