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Electrochemically synthesized highly crystalline nitrogen doped graphene nanosheets with exceptional biocompatibility.

ABSTRACT: This work reports first electrochemical preparation of exceptionally biocompatible, highly crystalline, and well exfoliated nitrogen doped graphene nanosheets (eNGS) from carbon nanosheets for the development of mighty platforms in the field of modern biosensing and other biological applications for human welfare. eNGS displayed exceptional biocompatibility. Administration of the as-synthesized eNGS to rat models did not lead to any significant deviation or inimical consequences in its functional observation battery (FOB) tests, GSH levels or the histology of the vital organs of the rat models. The pictomicrographs of myocytes nuclei and myofibrillar for heart, hippocampus (CA1) section for brain, central vein, and hepatocytes for liver and parenchyma, tubules and glomeruli for kidney also remained unaffected. Moreover, the resultant nanoelectrocatalyst displayed enhanced electrochemical performance towards real-time sensing of dopamine (DA) from human urine sample in the presence of interferences, such as ascorbic acid (AA) and uric acid (UA).

SUBMITTER: Suhag D

PROVIDER: S-EPMC5428811 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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Electrochemically synthesized highly crystalline nitrogen doped graphene nanosheets with exceptional biocompatibility.

Suhag Deepa D Kumar Sharma Arun A Rajput Satyendra K SK Saini Gajender G Chakrabarti Sandip S Mukherjee Monalisa M

Scientific reports 20170403 1

This work reports first electrochemical preparation of exceptionally biocompatible, highly crystalline, and well exfoliated nitrogen doped graphene nanosheets (eNGS) from carbon nanosheets for the development of mighty platforms in the field of modern biosensing and other biological applications for human welfare. eNGS displayed exceptional biocompatibility. Administration of the as-synthesized eNGS to rat models did not lead to any significant deviation or inimical consequences in its functiona ...[more]

PMID: 28373705

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Project description:PurposeIntroducing and developing new kinds of adsorbents are always a significant challenge in water treatments. In this work, for the first time, graphene oxide (GO), nitrogen-doped graphene oxide (ND-GO), highly nitrogen-doped graphene oxide (HND-GO), and 3D high nitrogen-doped graphene oxide (3D-HND-GO) were synthesized and comparatively evaluated in the removal of nitrate content of tap and underground waters.MethodsThe removal of the target analyte was performed through a batch adsorption approach, and the factors influencing its removal efficiency (i.e., initial pH of the sample, primary concentrations of nitrate, amount of adsorbent, and contact time) were evaluated through a central composite design (CCD) and response surface methodology (RSM).ResultsBased on the results, 3D-HND-GO showed the highest removal efficiency in comparison with the other mentioned nanoparticles. The nitrate removal using this adsorbent was modeled successfully so that R 2, adjusted R 2, and predicted R 2 values were 0.9717, 0.9508, and 0.9010, respectively. In addition, the optimal removal condition was achieved using the Nelder-Mead non-linear optimization algorithm as follow: the initial concentrations of nitrate (expressed as nitrogen): 15.0 mg/mL, the amount of the adsorbent: 2.0 mg/mL; pH of the sample: 3.0; and the contact time: 20.0 min. Under this optimal condition, the actual removal result (92.5 ± 4.0%) was in good agreement with the expected value (94.8 ± 5.1%). Additional studies were also performed to comprehensibly evaluate the adsorption activity of the adsorbent (e.g., kinetic, isotherm, and desorption parameters). The adsorption isotherm complied with the Langmuir model illustrating the considerable mono-layer adsorption capacities for the target ions with qm of 8.7 mg/g. The adsorption process was indicated to obey a pseudo 2nd order kinetic model, with the rate-limiting step for the adsorption phase.ConclusionsThis study revealed which 3D-HND-G leads to improved yield in the nitrate ions elimination, particularly at acidic media, which was related to the enhanced dispersibility and larger surface area. The adsorbent was further successfully used for treating tap and underground water samples. At the present moment, research as grown to modify 3D-HND-G in orders to increase the potentiality for industrial applications.Supplementary informationThe online version contains supplementary material available at 10.1007/s40201-021-00741-7.

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Electrochemically synthesized highly crystalline nitrogen doped graphene nanosheets with exceptional biocompatibility.

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Electrochemically synthesized highly crystalline nitrogen doped graphene nanosheets with exceptional biocompatibility.

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