Surface modulation and structural engineering of graphitic carbon nitride for electrochemical sensing applications

Babu, Ann Mariella; Rajeev, Rijo; Thadathil, Ditto Abraham; Varghese, Anitha; Hegde, Gurumurthy

doi:10.1007/s40097-021-00459-w

Cited by 42 publications

(15 citation statements)

References 174 publications

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“…After 40 min, 200 mL of the sample was diluted with 4 mL of distilled water, and UV-Vis spectra were measured to determine the suitable reaction time. The effects of AgNO 3 volume (0.6, 0.7, 0.8, 0.9, and 1 mL), temperature (40,50,60,70,80, and 90 1C), reaction time (5, 10, 15, 20, 25, 30, 35, 40, and 45 min), and GO volume (0, 0.8, 1.6, 2.4, and 3.2 mL) to the formation of AgNPs were thoroughly investigated.…”

Section: Methodsmentioning

confidence: 99%

“…Specifically, GO has been reported to be a non-faradaic electric double-layer capacitor owing to the high surface area, while the capacitance of AgNPs is caused by the redox of Ag +1/0 in graphene-based nanocomposite. 40 Thus, it NJC Paper can be concluded that the general capacitance of the fabricated material is derived from the synergetic contributions of both the double-layer and pseudocapacitance. Nevertheless, electrochemical impedance spectra (EIS) were also recorded to extensively investigate the charge transport behavior of the fabricated Ag@GO.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

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Green synthesis of silver@graphene oxide nanocomposite for antibacterial, cytotoxicity assessment, and hydrogen peroxide electro-sensing

et al. 2023

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Section: Methodsmentioning

confidence: 99%

Section: Electrochemical Propertiesmentioning

confidence: 99%

Green synthesis of silver@graphene oxide nanocomposite for antibacterial, cytotoxicity assessment, and hydrogen peroxide electro-sensing

et al. 2023

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“…These then serve as sites for creating defects and chemically reactive sites. [1,5] Further, the layered structure can be easily destroyed into smaller counterparts by different cutting techniques, eventually leading to the formation of a quantum dot. [74] The studies reveal that different ways of breaking down the MXene sheets can also strongly influence the properties of the quantum dots.…”

Section: Synthesis Strategies and Characterizationsmentioning

confidence: 99%

New Horizons in the Synthesis, Properties, and Applications of MXene Quantum Dots

Sariga

Babu

Kumar

et al. 2023

Adv Materials Inter

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soum led the discovery of a new class of materials called MXene which was synthesized by selective etching of MAX phases. Here, a few layered arrays of (early) transition metal atoms are connected by a carbon/ nitrogen atom layer, linking the metallic layer known as transition metal carbides/nitrides or carbonitrides. [9,10] The general formula of MXene is M (n+1) X (n) T (x) or MAX; where M represents transition metal ions (such as Ti, Sc, Nb, and Mo), X represents Carbon or Nitrogen element, and T is any surface functional group such as Oxygen, Fluorine, or Hydroxyl group. Such compounds show an exceptional fusion of electronic conductivity and optical properties arising from the free electrons of the transition metal carbides or nitrides along with hydrophilicity from the surface functional groups. [11][12][13][14][15] The steady 2D forms of MXenes display distinguishing properties unlike the intralayer covalent bonds and weak van der Waals interactions seen in the bulk material. They possess a typical planar morphology with alterable surface characteristics, excellent conductivity, and hydrophilicity as well as appreciable thermal, mechanical, optical, and chemical properties. MXenes also have profound applications in energy-related devices, electrochemical and fluorescent detection, water purification, catalysis, and environmental research. [13,16,17] Interestingly, the etching of the MXene layers results in the formation of 0D semiconductor MXene quantum dots (MXene QDs). The QDs produced from MXenes showcase conductivity, hydrophilicity, and biocompatibility similar to that of MXenes along with distinctive optical and electrical properties. [18,19] They possess a lateral dimension of <10 nm, with abundant active sites and a greater surface-tovolume ratio compared to the parental MXene. These monodisperse nanocrystals exhibit semiconductor-like properties, size-dependent characteristics, and variable energy levels. [20] The edge defects and quantum confinement in the QDs account for their fluorescence emission. [21,22] The excellent light-harvesting properties also come advantageous for MXene QDs to be used in light-to-heat conversion applications. Ease of functionalization, high water dispersibility, good colloidal and photostability, as well as superior physicochemical and photoelectric activities contribute to promising applications of the MXene QDs in the fields of optics, photothermal conversion, photochemotherapy, fluorescence detection, and bioimaging. In 2017, the first prepared photoluminescent Ti 3 C 2 QDsThe progress of MXenes, a 2D layered structural material since its discovery in 2011 recently arouses a great deal of attention due to their plethora of applications in a diverse range of fields. Their excellent properties in terms of surface chemistry, optical activity, electrical conductivity, presence of abundant active catalytic sites, tunable band gap structure, ease of surface functionalization, and good biocompatibility make them an ideal candidate. The authors aim to guide the readers thr...

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“…Nanomaterials are powerful and strategic materials with unique properties and are useful for different branches of science [43][44][45][46][47][48][49][50][51][52][53]. Due to the unique properties of nanomaterials, extensive research has been conducted on the application of nanomaterials in various sciences such as the food industry, pharmaceutical industry, water-treatment measurement sensors, mechanical engineering, and energy industries [54][55][56][57][58][59][60][61]. Platinumbased nanomaterials have shown high-performance catalytic activity in electrochemical systems [62].…”

Section: Introductionmentioning

confidence: 99%

Monitoring of Butylated Hydroxyanisole in Food and Wastewater Samples Using Electroanalytical Two-Fold Amplified Sensor

et al. 2022

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A high performance and fast response sensor was fabricated as a monitoring system for the determination of butylated hydroxyanisole (BHA) in food and wastewater samples. In this regard, a carbon paste electrode (CPE) that was amplified with platinum-decorated single wall carbon nanotubes (Pt/SWCNTs) and 1-Butyl-3-methylimidazolium chloride ([C4mim][Cl]) was investigated as a new electroanalytical sensor for the monitoring of BHA in aqueous solution. The [C4mim][Cl]/Pt/SWCNTs/CPE offered an excellent catalytic activity on oxidation signal of BHA and enhanced its oxidation current about 5.51 times. In the final step, the standard addition results confirmed the powerful ability of [C4mim][Cl]/Pt/SWCNTs/CPE to the monitoring of BHA in different water and food samples with acceptable recovery data.

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Surface modulation and structural engineering of graphitic carbon nitride for electrochemical sensing applications

Cited by 42 publications

References 174 publications

Green synthesis of silver@graphene oxide nanocomposite for antibacterial, cytotoxicity assessment, and hydrogen peroxide electro-sensing

Green synthesis of silver@graphene oxide nanocomposite for antibacterial, cytotoxicity assessment, and hydrogen peroxide electro-sensing

New Horizons in the Synthesis, Properties, and Applications of MXene Quantum Dots

Monitoring of Butylated Hydroxyanisole in Food and Wastewater Samples Using Electroanalytical Two-Fold Amplified Sensor

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