Nanospheres of copper(iii) 1,2-dicarbomethoxy-1,2-dithiolate and its composite with water soluble carbon nanotubes

Tripathi, Kumud Malika; Begum, Ameerunisha; Sonkar, Sumit Kumar; Sarkar, Sabyasachi

doi:10.1039/c3nj00368j

Cited by 38 publications

(21 citation statements)

References 62 publications

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“…However, as Ag is monovalent, more research is required to understand the limits of GO's peroxidase-like or intrinsic catalytic properties using divalent, trivalent, and tetravalent inorganic elements 48 . The intrinsic and peroxidase-like catalytic properties of graphene shown here may be seen in its allotropes like carbon nanotubes [49][50][51][52] and fullerenes 53 coupled with epoxy, hydroxyl, and carboxyl groups. Also, in future experiments, radical scavenger study and electron spin resonance technique can help understand the influence of free radicals, O 2 , and OH groups (i.e., resulting from decomposed H 2 O 2 ) on the fabrication of carbon nanocomposites.…”

Section: Discussionmentioning

confidence: 87%

Preparation of graphene nanocomposites from aqueous silver nitrate using graphene oxide’s peroxidase-like and carbocatalytic properties

Garg

Papponen

Johansson

et al. 2020

Sci Rep

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the present study evaluates the role of graphene oxide's (Go's) peroxidase-like and inherent/ carbocatalytic properties in oxidising silver nitrate (AgNO 3 ) to create graphene nanocomposites with silver nanoparticles (GO/Ag nanocomposite). Activation of peroxidase-like catalytic function of Go required hydrogen peroxide (H 2 o 2 ) and ammonia (nH 3 ) in pH 4.0 disodium hydrogen phosphate (na 2 Hpo 4 ). Carbocatalytic abilities of GO were triggered in pH 4.0 deionised distilled water (ddH 2 O). Transmission electron microscope (TEM), scanning electron microscope (SEM), cyclic voltammetry (CV) and UV-Vis spectroscopy aided in qualitatively and quantitatively assessing GO/Ag nanocomposites. teM and SeM analysis demonstrated the successful use of Go's peroxidase-like and carbocatalytic properties to produce GO/Ag nanocomposite. UV-Vis analysis indicated a higher yield in optical density values for GO/Ag nanocomposites created using GO's carbocatalytic ability rather than its peroxidaselike counterpart. Additionally, CV demonstrated that GO/Ag nanocomposite fabricated here is a product of an irreversible electrochemical reaction. Our study outcomes show new opportunities for GO as a standalone catalyst in biosensing. We demonstrate a sustainable approach to obtain graphene nanocomposites exclusive of harmful chemicals or physical methods.Remarkable optical, thermal, mechanical, and electrical properties of graphene have captivated the imaginations of scientists worldwide 1-4 . Graphene is an ideal composite counterpart to create flexible electronics 5,6 , design batteries with enhanced storage capability 7 , prevent steel corrosion 8 , and shield aircraft from heat 9 . Real-world graphene applications have originated across several industries like the Inov-8 running trainers that employ thermal and mechanical qualities of graphene to improve their durability 10 . The famous sports equipment manufacturer, HEAD applied graphene to create stronger tennis rackets with lighter weight distribution 10 . The BAC-Mono formula racing car also uses graphene to boost strength and reduce the mass of its body parts by 20% 11 . Miniaturization of biochemical assays using graphene-based sensors for research and clinical purposes is now a reality with AGILER100 12

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Section: Discussionmentioning

confidence: 87%

Preparation of graphene nanocomposites from aqueous silver nitrate using graphene oxide’s peroxidase-like and carbocatalytic properties

Garg

Papponen

Johansson

et al. 2020

Sci Rep

View full text Add to dashboard Cite

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“…A distinct strong absorption peak at ~295 nm was observed due to the n-π* transitions of C=O of high density surfacial-COOH on wsCQDs. 7b, 47,64,68 For detailed optical properties of wsCQDs, its photoluminescent (PL) spectra with varying excitation wavelength from 400 to 600 nm with 20 nm continuous increase have analyzed and presented in Figure 4 (b). The tunable emission property of wsCQDs shows broad and excitation wavelength dependent PL properties and maximum emission intensity was observed at 420 nm excitation wavelength.…”

Section: Absorbance/ Photoluminescence Studymentioning

confidence: 99%

A simple one-step hydrothermal route towards water solubilization of carbon quantum dots from soya-nuggets for imaging applications

et al. 2015

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A high yield simple synthetic approach for water soluble photoluminescent carbon quantum dots via the controlled carbonization of soya nuggets is described. Single step, hydrothermal process, was employed for the water solubilization of carbon quantum dots. Multi-colored photoluminescent emissions were used to label E. coli cells.A simple and low-cost pyrolytic carbonization method has performed for the easy synthesis of carbon quantum dots from soya-nuggets under the insufficient amount of oxygen. Further, hydrothermal functionalization of carbonized black material after Soxhlet purification with nitric acid leads to the formation of its quantum sized water soluble version. Hydrothermally functionalized, water soluble carbon quantum dots (wsCQDs) are highly fluorescent and self-passivated having the quantum yield value of ~ 3 %, with the small range of size distribution. High photostability with high solubility makes these a potential candidate for imaging purposes, and we used these for the fluorescent labeling of Escherichia coli cells. Fig. 5.Fluorescence microscopic images of E. coli treated with wsCQDs; under (a) 488 and; (b) 532 nm band pass filters.

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“…Numerous studies have suggested that composite materials made of semiconductor nanostructures and nanocarbons are suitable to achieving visible-light-driven photocatalysis and a tunable bandgap structure [21][22][23] . Owing to the presence of abundant, free-flowing sp 2hybridized π electrons and photoinduced-electron transfer properties, nanocarbons have improved the harvesting of light energy in the visible region and have also enhanced the photocatalytic performance of semiconductor nanostructures 24,25 .…”

Section: Introductionmentioning

confidence: 99%

Visible-light photocatalysis by carbon-nano-onion-functionalized ZnO tetrapods: degradation of 2,4-dinitrophenol and a plant-model-based ecological assessment

et al. 2019

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The visible-light-induced photocatalytic performance of a three-dimensional (3D) hybrid composite based on carbon nano-onion (CNO)-functionalized zinc-oxide tetrapods (T-ZnO) was investigated to study the photocatalytic degradation of 2,4-dinitrophenol (DNP). The hybrid CNO-functionalized T-ZnO 3D composite was successfully developed via a facile one-step process. The CNOs, synthesized via a green route from flaxseed oil, were decorated on the surface of T-ZnO via chemical mixing. Such a hybrid composite allows for the complete optimization of the T-ZnO/ CNO interface to enhance visible-light harvesting, contributing to effective visible-light-induced photocatalysis. The enhanced photocatalytic performance of the T-ZnO-CNO 3D composite is attributed to the strong synergistic effects obtained by the unique cumulative intrinsic properties of CNOs and the 3D architecture of T-ZnO, which lead to exceptional charge transfer and separation. A reaction mechanism for the degradation of DNP is proposed based on a bandgap analysis and trapping experiments. Furthermore, the photocatalyst maintains a favorable reusability during consecutive cycling experiments. The ecological assessment of the photocatalytic process was performed via the germination of common gram seeds (Cicer arietinum) and reveals the low toxicity and environmental safety of the synthesized hybrid 3D composite. The observations confirm that the synthesized hybrid 3D composite facilitates wastewater decontamination using photocatalytic technology and highlights the broad implications of designing multifunctional materials for various advanced applications.

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Nanospheres of copper(iii) 1,2-dicarbomethoxy-1,2-dithiolate and its composite with water soluble carbon nanotubes

Cited by 38 publications

References 62 publications

Preparation of graphene nanocomposites from aqueous silver nitrate using graphene oxide’s peroxidase-like and carbocatalytic properties

Preparation of graphene nanocomposites from aqueous silver nitrate using graphene oxide’s peroxidase-like and carbocatalytic properties

A simple one-step hydrothermal route towards water solubilization of carbon quantum dots from soya-nuggets for imaging applications

Visible-light photocatalysis by carbon-nano-onion-functionalized ZnO tetrapods: degradation of 2,4-dinitrophenol and a plant-model-based ecological assessment

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