Sensitive electrochemical detection of picloram utilising a multi-walled carbon nanotube/Cr-based metal-organic framework composite-modified glassy carbon electrode

Hadi, Mojtaba; Bayat, Mahsa; Mostaanzadeh, Hossein; Ehsani, Ali; Yeganeh-Faal, Ali

doi:10.1080/03067319.2018.1441838

Cited by 23 publications

(5 citation statements)

References 39 publications

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“… Sl. No Composite system Detection technique Linear range Limit of detection Real sample Response time References 1 Au@MWCNT-PVCL/ GCE DPV 0.02–183 μM 1500 pM Rice River water Soil NR 14 2 MWCNT/Cr-MOF/ GCE SWV 0.1–12.5 μM and 12.4–40 μM 60,000 pM River Water NR 32 3 Anti-PCR/Chitosan/ AuNPs/GCE CV 0.005 to 10 µg/mL 20.7 pM Rice, Lettuce, Paddy field water NR 33 4 Boron-doped diamond film electrode DPV 0.8 to 48.07 μmol −1 L 7.0 × 10 4 pM Tap water, natural water NR 12 5 UZMWCNT + rGO/AuNPs/GCE SWV 5 × 10 –2 to 6 × 10 5 nM 2.31 ± 0.02 pM Soil, Rice 0.4 s This work …”

Section: Resultsmentioning

confidence: 99%

“…Similarly, Bandzuchová et al constructed a diamond film electrode doped with boron for picloram detection using DPV 12 . A few other sensors including immunosensors and electrochemical sensors have been constructed for the detection of picloram 32 , 33 . As compared to the previously proposed works, our system is deployable as it does not involve tedious setups, or complex sample preparation and shows an excellent response time.…”

Section: Introductionmentioning

confidence: 99%

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Chemically engineered unzipped multiwalled carbon nanotube and rGO nanohybrid for ultrasensitive picloram detection in rice water and soil samples

Dkhar

Kumari

Chandra

2023

Sci Rep

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Picloram (4-Amino-3,5,6-trichloro pyridine-2-carboxylic acid) is a chlorinated herbicide that has been discovered to be tenacious and relatively durable in both soil and water. It is known to have adverse and unpleasant effects on humans causing several health complications. Therefore, the determination of picloram is profoundly effective because of its bio-accumulative and persistent nature. Because of this, a sensitive, rapid, and robust detection system is essential to detect traces of this molecule. In this study, we have constructed a novel nanohybrid system comprising of an UZMWCNT and rGO decorated on AuNPs modified glassy carbon electrode (UZMWCNT + rGO/AuNPs/GCE). The synthesized nanomaterials and the developed system were characterized using techniques such as SEM, XRD, SWV, LSV, EIS, and chronoamperometry. The engineered sensor surface showed a broad linear range of 5 × 10–2 nM to 6 × 105 nM , a low limit of detection (LOD) of 2.31 ± 0.02 (RSD < 4.1%) pM and a limit of quantification (LOQ) of 7.63 ± 0.03 pM. The response time was recorded to be 0.2 s, and the efficacy of the proposed sensor system was studied using rice water and soil samples collected from the agricultural field post filtration. The calculated recovery % for picloram in rice water was found to be 88.58%—96.70% (RSD < 3.5%, n = 3) and for soil it was found to be 89.57%—93.24% (RSD < 3.5%, n = 3). In addition, the SWV responses of both the real samples have been performed and a linear plot have been obtained with a correlation coefficient of 0.97 and 0.96 for rice and soil samples, respectively. The interference studies due to the coexisting molecules that may be present in the samples have been found to be negligible. Also, the designed sensor has been evaluated for stability and found to be highly reproducible and stable towards picloram detection.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemically engineered unzipped multiwalled carbon nanotube and rGO nanohybrid for ultrasensitive picloram detection in rice water and soil samples

Dkhar

Kumari

Chandra

2023

Sci Rep

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“…Hadi et al developed a glassy carbon electrode modified with carbon nanotubes (CNTs) and a Cr-based metal–organic framework (MIL-101, Cr-BDC, where H 2 BDC = terephthalic acid) for the determination of picloram via a sensitive, simple, and fast voltammetric method . Detection of picloram using CNT/MIL-101/GCE showed linear ranges of 24.15–3018 μg·L –1 and 3018–9658 μg·L –1 with an LOD of 0.06 μM via the SWV method of detection.…”

Section: Electrochemical Sensing Of Environmental Pollutantsmentioning

confidence: 99%

Metal–Organic Coordination Polymers: A Review of Electrochemical Sensing of Environmental Pollutants

Debsharma,

Dutta,

Dey

et al. 2024

Crystal Growth & Design

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Environmental contamination has been a notorious danger to mankind. Fast development, modern industrialization, change in lifestyle of the masses, and incomplete knowledge about material safety data sheets (MSDS) of every material/chemical discharged cause degradation of the environment. To monitor and control of such pollution, there is an urgent requirement for innovative methods for identification, classification, and quantification of the pollutants with excellent performance (like high selectivity, high sensitivity, fast response time, and reliability). Among several analytical sensing techniques, an electrochemical method of detection, using metal−organic frameworks (MOFs) as the sensing platform for trace quantity recognition of ecological analytes, grabs most of the attention due to its very high sensitivity, nonspecific way of measurement (absorption/fluorescence are very specific), both redox noninnocent and innocent analytes could be determined, quick response time, use of single instrument for different measurements, etc. MOFs are porous coordination polymers (CPs) formed by coordination of metal nodes/clusters and multitopic organic linkers as ligands. Due to their large surface area, permanent porosity, abundant microcrystalline structures and ease of the tailoring, postsynthetic modification properties of MOFs have made them advantageous for storage, catalysis, sensing, separation, and biological applications. On combining with small biomolecules, organic dyes, nanoparticles, nanowires, nanofibers, etc., composite MOFs have better mechanical stability, catalytic performance, conductivity, and sensing application. This review is focused on the recent attention of the electrochemical sensing applications of MOFs and their composites. Electrochemical sensors are an economical and suitable technique for the detection of different analytes and are extensively utilized in agriculture, food, oil, dyes and pigments, pharmaceutical industries, and biomedical applications. Herein, we have highlighted the use of MOFs in the sensing of different environmental contaminants i.e., volatile organic compounds (VOCs), phenolic compounds, heavy metal ions, antibiotics, pesticides, hydrazine, nitrite, nitroaromatic compounds, etc. This Review covers the publications from 2000 to 2024 (January), and we are confident that this review will enable new inspiration to exploit MOFs-based advanced electrochemical sensing properties in the future.

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“…[50,51] Furthermore, there are studies for the use as separators, [52,53] phase change materials, [54] oxidation catalysts [55] or various detectors. [56,57] In the field of classical electronic applications, such composites have been tested as supercapacitors [58,59] or as electrode materials in batteries. [60][61][62][63][64] Furthermore, they can be used as electrocatalyst for water splitting [65] or as sensing materials for humidity [66] or glucose.…”

Section: Introductionmentioning

confidence: 99%

“…For example, there are studies regarding the adsorption of hydrogen, carbon dioxide, and the removal of organic pollutants . Furthermore, there are studies for the use as separators, phase change materials, oxidation catalysts or various detectors . In the field of classical electronic applications, such composites have been tested as supercapacitors or as electrode materials in batteries .…”

Section: Introductionmentioning

confidence: 99%

Electrically Conducting Nanocomposites of Carbon Nanotubes and Metal‐Organic Frameworks with Strong Interactions between the two Components

et al. 2019

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Highly integrated nanocomposites of Zr‐based metal‐organic frameworks (MOFs) of the UiO‐66 class and multi‐wall carbon nanotubes (MWCNTs) are prepared by direct crystallization of MOFs in the presence of CNTs. Powder samples with homogeneously distributed and strongly intergrown nanotubes and nanoparticles are obtained. Growth of the MOFs in the presence of CNTs deposited on glass slides yields open or compact coatings of the nanocomposites. The materials combine the high porosity and versatility of MOFs with the high electrical conductivities of CNTs. Upon increasing the amount of CNTs in the synthesis, the electrical conductivity shows a clear percolation behavior. Even with small amounts of CNTs, high conductivities are observed. SEM and TEM pictures show the strong intergrowth between the CNTs and the MOF nanoparticles. Crystallization times are shorter in the presence of CNTs, and CNTs run centrally through the MOF crystals. These facts indicate that the CNTs serve as heterogeneous nucleation centers for the formation of MOF nanocrystals. Sensing experiments performed on the coatings show significant changes in the electrical conductivities of the nanocomposite materials in the presence of different analytes, which are also discernable from the changes observed on bare CNTs. This is further proof for the close interaction between the components of the nanocomposites.

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Sensitive electrochemical detection of picloram utilising a multi-walled carbon nanotube/Cr-based metal-organic framework composite-modified glassy carbon electrode

Cited by 23 publications

References 39 publications

Chemically engineered unzipped multiwalled carbon nanotube and rGO nanohybrid for ultrasensitive picloram detection in rice water and soil samples

Chemically engineered unzipped multiwalled carbon nanotube and rGO nanohybrid for ultrasensitive picloram detection in rice water and soil samples

Metal–Organic Coordination Polymers: A Review of Electrochemical Sensing of Environmental Pollutants

Electrically Conducting Nanocomposites of Carbon Nanotubes and Metal‐Organic Frameworks with Strong Interactions between the two Components

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