Design, synthesis, and catalytic performance of modified graphene oxide based on a cobalt complex as a heterogenous catalyst for the preparation of aminonaphthoquinone derivatives

Mirheidari, Mahnaz; Safaei‐Ghomi, Javad

doi:10.1039/d1ra01790j

Cited by 4 publications

(4 citation statements)

References 48 publications

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“…Mirheidari et al 121 covalently attached an amino-functionalized SiO 2 sphere/cobalt combination to a GO surface. In the production of amino naphthoquinones in ethanol solvent, the catalyst demonstrated significant catalytic activity for one-pot synthesis to enhance the yield (96–98%) in a smaller span of time (5–8 min).…”

Section: Application Of Graphene Oxide As the Catalysis For Different...mentioning

confidence: 99%

An Update on Graphene Oxide: Applications and Toxicity

et al. 2022

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Graphene oxide (GO) has attracted much attention in the past few years because of its interesting and promising electrical, thermal, mechanical, and structural properties. These properties can be altered, as GO can be readily functionalized. Brodie synthesized the GO in 1859 by reacting graphite with KClO 3 in the presence of fuming HNO 3 ; the reaction took 3−4 days to complete at 333 K. Since then, various schemes have been developed to reduce the reaction time, increase the yield, and minimize the release of toxic byproducts (NO 2 and N 2 O 4 ). The modified Hummers method has been widely accepted to produce GO in bulk. Due to its versatile characteristics, GO has a wide range of applications in different fields like tissue engineering, photocatalysis, catalysis, and biomedical applications. Its porous structure is considered appropriate for tissue and organ regeneration. Various branches of tissue engineering are being extensively explored, such as bone, neural, dentistry, cartilage, and skin tissue engineering. The band gap of GO can be easily tuned, and therefore it has a wide range of photocatalytic applications as well: the degradation of organic contaminants, hydrogen generation, and CO 2 reduction, etc. GO could be a potential nanocarrier in drug delivery systems, gene delivery, biological sensing, and antibacterial nanocomposites due to its large surface area and high density, as it is highly functionalized with oxygen-containing functional groups. GO or its composites are found to be toxic to various biological species and as also discussed in this review. It has been observed that superoxide dismutase (SOD) and reactive oxygen species (ROS) levels gradually increase over a period after GO is introduced in the biological systems. Hence, GO at specific concentrations is toxic for various species like earthworms, Chironomus riparius, Zebrafish, etc.

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Section: Application Of Graphene Oxide As the Catalysis For Different...mentioning

confidence: 99%

An Update on Graphene Oxide: Applications and Toxicity

et al. 2022

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“…The decomposition of the nanocomposite after 300 °C continues to 800 °C, indicating the thermal stability of the catalyst. 56…”

Section: Resultsmentioning

confidence: 99%

“…after 300 °C continues to 800 °C, indicating the thermal stability of the catalyst. 56 After structural and compositional verification of the magnetic graphene oxide supported copper catalyst, we investigated its applicability in the cyclization reaction of 2-aminophenols with β-diketones for the synthesis of bioactive benzoxazoles. In order to obtain the optimized reaction conditions, 2-aminophenol and acetylacetone were chosen as test substrates.…”

Section: Dalton Transactions Papermentioning

confidence: 99%

A simple and straightforward strategy for expedient access to benzoxazoles using chemically engineered 2D magnetic graphene oxide nanosheets as an eco-compatible catalyst

Sharma¹,

Sharma²,

Dutta³

et al. 2023

Dalton Trans.

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“…22,23 GO composites with metals and metal oxides (MOs) have been demonstrated to outperform graphene in various catalytic, chemical sensing, and energy storing/harvesting properties. [24][25][26][27] GO composites with metal suldes, phosphides and hydroxides have also been studied for super capacitor electrode applications. [28][29][30] These examples point to interesting electronic features of GO/M interfaces and illustrate that their electrical properties would strongly depend on the nature of M. 31 These features establish GO and its composites as promising functional materials, but, unlike graphene, the structure and electrical properties of GO/M and GO/MO interfaces have remained relatively unexplored.…”

Section: Introductionmentioning

confidence: 99%

Specific capacitance of graphene oxide–metal interfaces at different deoxygenation levels

Hossein-Babaei,

Naemidehkharghani,

Razmand

2023

J. Mater. Chem. A

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Design, synthesis, and catalytic performance of modified graphene oxide based on a cobalt complex as a heterogenous catalyst for the preparation of aminonaphthoquinone derivatives

Abstract: GO@f-SiO2@Co is a heterogenous catalyst composed of spherical silica particles grafted on the surface of graphene oxide with ethylenediamine ligands and coordination with Co(ii). We assessed the activity of the catalyst for the synthesis of aminonaphthoquinones.

Cited by 4 publications

References 48 publications

An Update on Graphene Oxide: Applications and Toxicity

An Update on Graphene Oxide: Applications and Toxicity

A simple and straightforward strategy for expedient access to benzoxazoles using chemically engineered 2D magnetic graphene oxide nanosheets as an eco-compatible catalyst

Specific capacitance of graphene oxide–metal interfaces at different deoxygenation levels

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