Synthesis of novel three-dimensional flower-like cerium vanadate anchored on graphitic carbon nitride as an efficient electrocatalyst for real-time monitoring of mesalazine in biological and water samples

Sharma, Tata Sanjay Kanna; Hwa, Kuo-Yuan; Santhan, Aravindan; Ganguly, Anindita

doi:10.1016/j.snb.2020.129413

Cited by 38 publications

(25 citation statements)

References 45 publications

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“…A difference in the absorbance of C–N and the ring around 1460 cm –1 suggests that triazine rings are cross-linked with the N–H and secondary amine groups, as illustrated in Figure D. In addition, a new peak appeared at 2163 cm –1 in metal/g-C 3 N 4 , which agreed with the asymmetric stretching vibration mode of cyano groups (−C≡N or −N=C=), following the loss of an NH 3 group …”

Section: Resultsmentioning

confidence: 99%

“…g-C 3 N 4 is a 2D carbon-based nanomaterial typical n -type semiconductor having a band gap of 2.7 eV. It is well known to have sp 2 -hybridized nitrogen-substituted structures, which has exclusive surface properties, great surface area, and excellent thermal and chemical stability. − These crucial surface and functional properties support various applications.…”

Section: Introductionmentioning

confidence: 99%

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2D-Graphitic Carbon Nitride Nanosheet/Metal Nanocomposites for Electrochemical Sensors of Hydroquinone in Real Sample Analysis

Murugan

Hwa

Santhan

2023

ACS Appl. Nano Mater.

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In the present work, we have investigated a low-cost fabrication method in preparing two-dimensional (2D) graphitic carbon nitride (g-C 3 N 4 ) with nanosheet/metal nanocomposites by a rapid calcination process. The synthesized metal/g-C 3 N 4 nanosheet was analyzed further by using UV− visible, Fourier transform-infrared spectroscopy (FTIR), powder X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDAX) with elemental analysis mapping. Through field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM), the metal/g-C 3 N 4 nanosheet was observed to have a porous nanostructure. X-ray diffraction patterns of the 2D-GCN nanostructure were confirmed to be of fine crystalline size. X-ray photoelectron spectroscopy provided qualitative and quantitative data about the structure of C 3 N 4 . An electrochemical performance was carried out by using cyclic and differential pulsed voltammetry techniques. The metal/g-C 3 N 4 nanosheet/nanocomposite was fabricated on the glassy carbon electrode (GCE) for electrochemical determination of hydroquinone (HQ). The electrocatalytic mechanism of HQ was scrutinized, which proved fast electron and ion transfer phenomena. The asprepared Ag/g-C 3 N 4 /GCE exposed greater performance with a low limit of detection (LOD) of 5.8 μM in a wide linear range from 0.99 to 999.96 μM, which shows better repeatability, reproducibility, stability and an outstanding selectivity. The Ag/g-C 3 N 4 /GCEfabricated electrode exhibited good sensitivity at 0.067 μA Mm −1 cm −2 . The proposed sensor additionally verified its practical feasibility in real-time monitoring on river and tap water samples with a satisfactory recovery.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

2D-Graphitic Carbon Nitride Nanosheet/Metal Nanocomposites for Electrochemical Sensors of Hydroquinone in Real Sample Analysis

Murugan

Hwa

Santhan

2023

ACS Appl. Nano Mater.

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“…To investigate more and to have a clear insight, we have analyzed the nonlinear least-squares fitting for the peaks obtained from the XRD patterns of the prepared material. Below listed model functions were carried out to analyze the fitting procedure: (a) Gaussian function, (b) Lorentzian (Cauchy) function, and (c) pseudo-Voigt function. , These parameters help in judging the quality and degree of the profile fitted, and it helps to resemble the true XRD shape. The pseudo-Voigt function which we used is mentioned as follows Here, (2θ) c = center position of the peak; w = distribution width; m u = Lorentzian parameter contribution for the overall peak shape; rest have standard parameter meanings.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Water-Soluble Cadmium Selenide/Zinc Sulfide Quantum Dots on Functionalized Multiwalled Carbon Nanotubes for Efficient Covalent Synergism in Determining Environmental Hazardous Phenolic Compounds

Hwa

Ganguly

Santhan

et al. 2022

ACS Sustainable Chem. Eng.

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Increasing pollution and ecological imbalance have accentuated the need to develop sensors through an efficient technique. Typically, the core−shell nanocrystals of cadmium selenide/zinc sulfide (CdSe/ZnS) with functionalized multiwalled carbon nanotubes (f-MWCNTs) are used for developing an efficient electrochemical sensor that simultaneously detects 4-aminophenol (4-AP) and 4nitrophenol (4-NP). The composite network formed by CdSe/ZnS quantum dots with the f-MWCNTs (CdSe/ZnS QDs @ f-MWCNT) behaves as an excellent electrocatalyst and provides a transportation pathway by engendering the electron− hole pair. The sensor exhibits low detection limit values of 34.8 and 17.7 nM for detection of 4-AP and 4-NP, respectively. The sensor also showed excellent sensitivity at a linear working range of 0.149−510 μM concentration for both the analytes. Additionally, the study also shows the potential for commercial feasibility of the asprepared sensor by acquiring a satisfactory recovery percentage of the analytes in realtime biological and environmental sample analyses.

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“…REVOs are used as electrode modifiers owing to their high energy density, wide range of oxidation states, and layered structures . According to the dated research, CeVO 4 , , LaVO 4 , LuVO 4 , SmVO 4 , EuVO 4 , , HoVO 4 , and YVO 4 , are recognized as active electrode materials in various electrochemical applications due to their outstanding catalytic activity, structural stability, and optimal band gaps . In general, praseodymium (Pr 3+ ) is one of the potential rare-earth elements, which displays outstanding modes of electronic transitions and has a unique structure due to the presence of intestinal vacant space .…”

Section: Introductionmentioning

confidence: 99%

Surfactant-Assisted Synthesis of Praseodymium Orthovanadate Nanofiber-Supported NiFe-Layered Double Hydroxide Bifunctional Catalyst: The Electrochemical Detection and Degradation of Diphenylamine

et al. 2022

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Physiological storage disorders are caused by ineffective post-harvest handling of horticultural crops, particularly fruits. To address these post-harvest concerns, diphenylamine (DPAH •+ ) is widely used as a preservative to prevent fruit degradation and surface scald during storage around the world. Humans are negatively affected by the use of high concentrations of DPAH •+ because of the various health complications related to its exposure. As a result, accurate detection and quantification of DPAH •+ residues in treated fruits are critical. Rare earth metal orthovanadates, which have excellent physical and chemical properties, are potential materials for electrochemical sensors in this area. Herein, we present a simple and direct ultrasonication technique for the surfactant-assisted synthesis of praseodymium orthovanadate (PrVO 4 or PrV) loaded on nickel iron layered double hydroxide (NiFe-LDH) synthesized with deep eutectic solvent assistance, as well as its application as an effective catalyst in the detection and degradation of DPAH •+ in fruits and water samples. The current work presents supreme electrochemical features of a PrV@NiFe-LDH-modified screen-printed carbon electrode (SPCE) where cetyltrimethylammonium bromide (CTAB) surfactant-driven fabrication of PrV directs the formation of highly qualified engineered structures and the deep eutectic solvent based green synthesis of NiFe-LDH creates hierarchical lamellar structures following the principles of green chemistry. PrV and NiFe-LDH combine to produce a synergistic effect that improves the number of active sites, charge transfer kinetics, and electronic conductivity. Differential pulse voltammetry analysis of PrV@NiFe-LDH/SPCE reveals a dynamic working range (0.005−226.26 μM), increased sensitivity (133.13 μA μM −1 cm −2 ), enhanced photocatalytic activity, and low detection limit (0.001 μM), which are considered significant when compared with the former reported electrodes in the literature for the determination of DPAH ̇+ for its real-time applications.

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Synthesis of novel three-dimensional flower-like cerium vanadate anchored on graphitic carbon nitride as an efficient electrocatalyst for real-time monitoring of mesalazine in biological and water samples

Cited by 38 publications

References 45 publications

2D-Graphitic Carbon Nitride Nanosheet/Metal Nanocomposites for Electrochemical Sensors of Hydroquinone in Real Sample Analysis

2D-Graphitic Carbon Nitride Nanosheet/Metal Nanocomposites for Electrochemical Sensors of Hydroquinone in Real Sample Analysis

Synthesis of Water-Soluble Cadmium Selenide/Zinc Sulfide Quantum Dots on Functionalized Multiwalled Carbon Nanotubes for Efficient Covalent Synergism in Determining Environmental Hazardous Phenolic Compounds

Surfactant-Assisted Synthesis of Praseodymium Orthovanadate Nanofiber-Supported NiFe-Layered Double Hydroxide Bifunctional Catalyst: The Electrochemical Detection and Degradation of Diphenylamine

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