Silica nanosphere–graphene oxide (SiO2–GO) hybrid catalyzed facile synthesis of functionalized quinoxaline derivatives

Shitre, Praveen V.; Harale, Rajkumar R.; Sathe, Bhaskar R.; Shingare, Murlidhar S.

doi:10.1007/s11164-016-2667-8

Cited by 19 publications

(4 citation statements)

References 44 publications

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“…The XRD spectrum of calcium ferrite/graphene oxide nanocomposite shows a prominent peak at 25.78 ( d 002 = 0.34 nm) which denotes that upon formation of composite reduction of GO takes place . Also presence of a small peak at 14.82 ( d 002 = 0.59 nm) provides evidence that graphene oxide undergoes partial reduction only .…”

Section: Resultsmentioning

confidence: 97%

Greener route for microwave enhanced syntheses of bioactive 1,5‐benzodiazepines using heterogeneous calcium ferrite/graphene oxide nanocomposite as a novel and sustainable catalyst

Gupta

Ameta

Punjabi

2020

Journal of Heterocyclic Chem

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In the present paper, a novel and benign protocol for microwave enhanced one pot syntheses of 2,3‐dihydro‐1,5 benzodiazepine derivatives from substituted acetophenones, aryl‐aldehydes and o‐phenylene diamine using heterogeneous calcium ferrite/graphene oxide (CF/GO) nanocomposite has been reported. The catalyst was prepared by ultrasonication method and characterized by spectral and analytical techniques. The CF/GO nanocomposite was employed for environmentally benign synthesis of 2,3‐dihydro‐1,5 benzodiazepines. The synthesized benzodiazepine derivatives were screened for their antimicrobial activities against various bacteria and fungi. The present synthetic strategy offered several advantages such as excellent yields in short span of time, simple modus operandi, ease of isolation and purification of products, simple recovery and reusability of the catalyst. A tentative mechanism for synthesis of 2,3‐dihydro‐1,5 benzodiazepine using CF/GO nanocatalyst has also been proposed.

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Section: Resultsmentioning

confidence: 97%

Greener route for microwave enhanced syntheses of bioactive 1,5‐benzodiazepines using heterogeneous calcium ferrite/graphene oxide nanocomposite as a novel and sustainable catalyst

Gupta

Ameta

Punjabi

2020

Journal of Heterocyclic Chem

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“…The crystal structure of GO-SiO2 showed diffraction peaks at 2θ = 20,70°, 21,81°, 26,48° and 27,65° correspond to the crystal plane (100), ( 002), ( 101) and (220) respectively. The prominent and common peaks appearing around 21,81° in GO-SiO2 and GO composites are associated with the (002) crystal field of graphene oxide [17], [18]. Significantly, the GO-SiO2 composite shows a wide and sloping surface at an angle of 23,52° this is due to the amorphous surface structure of SiO2.…”

Section: Xrd Go-sio2 Compositementioning

confidence: 92%

Fabrication and Characterization of Polysulfone Membrane Based On GO-SiO₂ Composite using Phase Inversion Method

Angesti

Munasir

2021

E3S Web Conf.

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This research purpose to determine the material composition in the manufacture of polysulfone membranes by producing the best performance in the filtration application process. Polysulfone has good thermal and chemical stability properties that make it a candidate material in membrane manufacturing, but the hydrophobicity properties of polysulfone result in less than optimal membrane performance, so a blending process is needed to reduce hydrophobicity by maintaining the advantages of the membrane. The membrane was prepared using phase inversion with composite doping through the TEOS in situ hydrolysis method. The results of XRD identification showed that the diffraction pattern was successfully coated with silica with the amorphous phase, while the FTIR contained Si-O-Si bonds with a wave number of 1054 cm-1. The SEM surface morphology showed that the presence of silica and GO made the pore size larger with the pore size on the membrane 1,92 μm. The results of the contact angle test on the GO-SiO2/PSF variation of 0,8 obtained the lowest hydrophobicity value of 70,17°. The addition of composites will result in a larger pore size supported by the value of the contact angle, proving that the combination of the composite in polysulfone can increase the hydrophilicity of the membrane.

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“…The nanostructured SiO 2 -GO hybrid can be easily recovered by a simple filtration method and reused further for a minimum of four cycles without losing considerable activity (Scheme 34). 123…”

Section: Synthesis Of Quinoxaline Using Nano-based Catalystmentioning

confidence: 99%

Reusable nano-catalyzed green protocols for the synthesis of quinoxalines: an overview

et al. 2023

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Silica nanosphere–graphene oxide (SiO2–GO) hybrid catalyzed facile synthesis of functionalized quinoxaline derivatives

Cited by 19 publications

References 44 publications

Greener route for microwave enhanced syntheses of bioactive 1,5‐benzodiazepines using heterogeneous calcium ferrite/graphene oxide nanocomposite as a novel and sustainable catalyst

Greener route for microwave enhanced syntheses of bioactive 1,5‐benzodiazepines using heterogeneous calcium ferrite/graphene oxide nanocomposite as a novel and sustainable catalyst

Fabrication and Characterization of Polysulfone Membrane Based On GO-SiO₂ Composite using Phase Inversion Method

Reusable nano-catalyzed green protocols for the synthesis of quinoxalines: an overview

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Silica nanosphere–graphene oxide (SiO2–GO) hybrid catalyzed facile synthesis of functionalized quinoxaline derivatives

Cited by 19 publications

References 44 publications

Greener route for microwave enhanced syntheses of bioactive 1,5‐benzodiazepines using heterogeneous calcium ferrite/graphene oxide nanocomposite as a novel and sustainable catalyst

Greener route for microwave enhanced syntheses of bioactive 1,5‐benzodiazepines using heterogeneous calcium ferrite/graphene oxide nanocomposite as a novel and sustainable catalyst

Fabrication and Characterization of Polysulfone Membrane Based On GO-SiO2 Composite using Phase Inversion Method

Reusable nano-catalyzed green protocols for the synthesis of quinoxalines: an overview

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Product

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About

Fabrication and Characterization of Polysulfone Membrane Based On GO-SiO₂ Composite using Phase Inversion Method