scholarly journals Silver Nanoparticles Supported Graphitic Like Carbon Nitride for the Electrochemical Sensing of Nitrobenzene and its Derivatives

2021 ◽  
Author(s):  
Pandiyarajan C ◽  
Rameshkumar Perumal ◽  
Murugesan S ◽  
Selvaraj M
Keyword(s):  
Silver Nanoparticles ◽  
Carbon Nitride ◽  
Limit Of Detection ◽  
Electrochemical Techniques ◽  
Graphitic Carbon ◽  
Electrochemical Sensing ◽  
Graphitic Carbon Nitride ◽  
Transmission Electron ◽  
Low Concentrations ◽  
Ft Ir

Abstract Nitrobenzene (NB) is toxic even at low concentrations and hence, its contamination in the environment is a pervasive concern. The electrochemical techniques have emerged as rosy method to sense and degrade NB and graphitic carbon nitride (g-C3N4) catalysts are found to be promising for this. In this study, silver nanoparticles (AgNPs) decorated N-[3-(trimethoxysilyl)propyl]ethylenediamine (EDAS) modified graphitic carbon nitride nanocomposites (EDAS/(g-C3N4-Ag)NC) having various silver concentrations are prepared through a facile method and applied for the electrochemical sensing of NB derivatives. UV-vis absorption edge at 430 nm together with a broad surface plasmon resonance (SPR) peak at 450 nm indicates the existence of AgNPs on the g-C3N4 nanosheets. FT-IR spectra endorse the presence of g-C3N4 nanosheets in the composite. The presence of Ag in EDAS/(g-C3N4-Ag)NC is confirmed by transmission electron microscopy, energy dispersive X-ray analysis and cyclic voltammetry (CV). The nanocomposite prepared with 2 mM Ag+ shows superb electrocatalytic activity towards the reduction of nitrobenzene and its derivatives. Sensitivity of the modified electrode and limit of detection (LOD) for NB assessed by square wave voltammetry are found to be 0.594 A M− 1 cm− 2 and 2 µM, respectively, in the linear range of 5–50 µM.

Ultrathin 2D graphitic carbon nitride nanosheets decorated with silver nanoparticles for electrochemical sensing of quercetin

2018 ◽  
Vol 826 ◽  
pp. 207-216 ◽  
Author(s):  
Pitchaimani Veerakumar ◽  
Chellakannu Rajkumar ◽  
Shen-Ming Chen ◽  
Balamurugan Thirumalraj ◽  
King-Chuen Lin
Keyword(s):  
Silver Nanoparticles ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Electrochemical Sensing ◽  
Graphitic Carbon Nitride ◽  
Carbon Nitride Nanosheets

AgCl Loaded Mesoporous Graphitic Carbon Nitride as Visible Light Photocatalyst

2012 ◽  
Vol 518-523 ◽  
pp. 54-58 ◽  
Author(s):  
Chen Zhao ◽  
Si Yuan Yang ◽  
Zuo Tao Liu ◽  
Yue Ping Fang
Keyword(s):  
Carbon Nitride ◽  
Silver Chloride ◽  
Dip Coating ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
The Novel ◽  
X Ray Diffraction ◽  
Visible Light Photocatalyst ◽  
Transmission Electron ◽  
Uv Visible

A novel photocatalyst, AgCl loaded mesoporous graphitic carbon nitride (mpg-C3N4) in which silver chloride nanoparticles were introduced into the mesopores carbon nitride, was prepared by a dip-coating procedure. The as-prepared photocatalyst was characterized by X-ray diffraction, transmission electron microscopy, UV-visible spectrophotometry. The novel photocatalyst manifested a better photocatalytic activity than that of pure mpg-C3N4 for degradation of methyl orange.

Cobalt molybdate nanorods decorated on boron-doped graphitic carbon nitride sheets for electrochemical sensing of furazolidone

2020 ◽  
Vol 187 (12) ◽  
Author(s):  
Balasubramanian Sriram ◽  
Jeena N. Baby ◽  
Sea-Fue Wang ◽  
Mani Govindasamy ◽  
Mary George ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Electrochemical Sensing ◽  
Graphitic Carbon Nitride ◽  
Boron Doped ◽  
Cobalt Molybdate

Efficient synthesis of porous graphitic carbon nitride nanosheets with different precursors via thermal condensation

2020 ◽  
Vol 62 (4) ◽  
pp. 378-382
Author(s):  
Xuebing Hu ◽  
Yan Hu ◽  
Qing Zhang ◽  
Yun Yu ◽  
Yongqing Wang
Keyword(s):  
Carbon Nitride ◽  
Product Yield ◽  
Synthesis Temperature ◽  
Porous Graphitic Carbon ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Thermal Condensation ◽  
Economic Method ◽  
Transmission Electron ◽  
Carbon Nitride Nanosheets

Abstract Porous graphitic carbon nitride nanosheets were synthesized by the thermal condensation method using various precursors such as urea and melamine. Relevant properties of as-synthesized products were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and differential thermal analysis (DTA). The overall results suggest that the formation of porous graphitic carbon nitride nanosheets with a varied morphology can be achieved using diverse precursors through this process. Based on this product yield analysis, it is suggested that melamine and the lower synthesis temperature be selected to achieve the higher yield of graphitic carbon nitride production. The present work provides a facile and economic method for controlling the morphology and properties of graphitic carbon nitride products.

Graphitic carbon nitride: Effects of various precursors on the structural, morphological and electrochemical sensing properties

2017 ◽  
Vol 8 ◽  
pp. 150-162 ◽  
Author(s):  
Hui Lin Lee ◽  
Zdeněk Sofer ◽  
Vlastimil Mazánek ◽  
Jan Luxa ◽  
Chun Kiang Chua ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Electrochemical Sensing ◽  
Graphitic Carbon Nitride ◽  
Sensing Properties

scholarly journals Development of ciprofloxacin sensor using iron-doped graphitic carbon nitride as transducer matrix: Analysis of ciprofloxacin in blood samples

2021 ◽  
Author(s):  
Hattna Shivarudraiah Vedhavathi ◽  
Ballur Prasanna Sanjay ◽  
Mahesh Basavaraju ◽  
Beejaganahalli Sangameshwara Madhukar ◽  
Ningappa Kumara Swamy
Keyword(s):  
Carbon Nitride ◽  
Electrochemical Impedance ◽  
Graphitic Carbon ◽  
Electrochemical Sensing ◽  
Graphitic Carbon Nitride ◽  
Matrix Analysis ◽  
Pencil Graphite Electrode ◽  
X Ray Diffraction ◽  
Standard Samples ◽  
X Ray

In the present work, we have synthesized an iron-decorated graphitic carbon nitride (Fe@g-C3N4) composite and employed it for electrochemical sensing of ciprofloxacin (CFX). The physicochemical characteristics of the Fe@g-C3N4 composite were analyzed with X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray diffraction (EDX) spectroscopy methods. Further, the pencil graphite electrode (PGE) was modified with Fe@g-C3N4 composite to get PGE/Fe@g-C3N4 electrode and characterized the resultant electrode by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Differential pulse voltammetry (DPV) was employed to determine the effect of concentration and interferents. The modified PGE/Fe@g-C3N4 electrode demonstrated the exceptional electrochemical performance for CFX identification and quantification with a LOD of 5.4 nM, a wide linear range of 0.001-1.0 µM, and high sensitivity of 0.0018 µA mM-1 cm-2. Besides, Fe@g-C3N4 modified PGE showed remarkable recovery results in qualitative analysis of CFX in human blood specimens. This research advocates that the Fe@g-C3N4 composite acts as an excellent transducer material in the electrochemical sensing of CFX in blood and standard samples. Further, the proposed strategy deduces that the PGE/Fe@g-C3N4 sensor can be a prospective candidate for the dynamic determination of CFX in blood serum and possibly ratified as an exceptional drug sensor for therapeutic purposes.

scholarly journals Synthesis and Characterization of Graphitic Carbon Nitride Supported Tris(Hydroxymethyl)Aminomethanem) G-C3N4/ THAM) as Novel Catalyst for the Synthesis of Poly Hydroquinoline and Pyranopyrazole Derivatives

2021 ◽  
Author(s):  
Mohammad taghi bagherian jamnani ◽  
Rahimeh Hajinasiri ◽  
Hossein Ghafuri ◽  
Zinatossadat Hossaini
Keyword(s):  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
The Novel ◽  
Reaction Products ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic System ◽  
Ft Ir ◽  
Novel Catalyst

Abstract Here, an impressive heterogeneous catalytic system, graphitic carbon nitride supported tris(hydroxymethyl)aminomethanem) g-C3N4/ THAM) is presented. The novel g-C3N4/ THAM nanocatalysts was characterized by analyzing methods such as FT-IR, EDX, XRD, TGA, and FESEM. Afterward, the performance of fabricated nanocatalyst g-C3N4/ THAM was suitably investigated in multicomponent reactions (MCRs) for the synthesis of 1,4-dihydropyridine and pyranopyrazole derivatives. By optimizing reported nanocatalyst, the corresponding reaction products were obtained with excellent efficiency and then the reversibility process was exanimated. The g-C3N4/ THAM nanocatalyst is environmentally friendly and was catalyzed the reactions in the presence of ethanol as a green solvent.

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