Rice husk based porous carbon loaded with silver nanoparticles by a simple and cost-effective approach and their antibacterial activity

Cui, Jianghu; Yang, Yunhua; Hu, Yonghui; Li, Fangbai

doi:10.1016/j.jcis.2015.05.049

Cited by 46 publications

(30 citation statements)

References 42 publications

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“…3f ) the HRTEM EDX mapping image of NGO-AgNPs nanocomposite (Fig. 4d) confirms the presence of only carbon, oxygen and silver elements in it, which indicates successful formation of pure NGO-AgNPs nanocomposites [53]. Based on TEM analysis, it may be predicted that controlled particle size and uniform dispersion of AgNPs on graphene surface open a path for biomedical applications.…”

Section: Characterization Of Graphene Nanocomposites and Drugmentioning

confidence: 81%

Green synthesized amino-PEGylated silver decorated graphene nanoplatform as a tumor-targeted controlled drug delivery system

Palai

Mondal

Chakraborti³

et al. 2019

SN Appl. Sci.

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In this study design, the PEGylated silver decorated graphene nanocomposites (NGO-AgNPs-PEG) were successfully prepared by eco-friendly non-toxic green synthesis following a novel syn-graphenization method using the aqueous leaf extract of Azadirachta indica (A. indica) (neem) as reducing agent. The prepared Smart pH stimuli responded nanoplatform was thoroughly characterized by various analytical techniques. Since a functional nanocarrier is very essential for cancer therapy, it could quickly guide the loaded anticancer drug to the tumor site to decrease the side effect. In order to overcome the side effects of doxorubicin (DOX), an anticancer drug, it was incorporated into amino PEGylated NGO-AgNPs nanocomposites. Considering drug loading and release studies, it may be concluded that improved drug loading efficiency (218%) and more pH-responsive controlled release (following Korsmeyer-Peppas model release kinetics) of DOX from NGO-AgNPs-PEG lead to a promising nanocarrier for the anticancer drug. The cytotoxicity study results, on HaCaT cell lines, indicated DOX-loaded PEGylated functionalized nanographene oxides, as compared to free DOX, had lesser harmful effect on normal cells than cancer cells. Increased cytotoxicity was exhibited in the cancerous cells (HeLa cell lines) treated with DOX loaded PEGylated silver functionalized nanographene oxide compared to covalently conjugated NGO-DOX. So, the effective delivery and release of the anticancer drug into acidic microenvironment of the targeted tumour cells would bring out higher therapeutic efficacy than pure NGO. Such a gold standard biocompatible PEGylated silver decorated NGO theranostic nanoplatform may be an excellent nano cargo for targeted and controlled drug delivery in cancer therapy.

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Section: Characterization Of Graphene Nanocomposites and Drugmentioning

confidence: 81%

Green synthesized amino-PEGylated silver decorated graphene nanoplatform as a tumor-targeted controlled drug delivery system

Palai

Mondal

Chakraborti³

et al. 2019

SN Appl. Sci.

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“…A halo located around 25° was found in the samples, which is typical of amorphous carbon 50 . In some cases, it almost disappears completely with metal impregnation in activated carbon, due to the strength signal of the new compounds 51,52 . The peak observed at 2θ ≅ 27° is derived from an interference caused by quartz sample holder used in the XRD equipment.…”

Section: Adsorbents Characterizationmentioning

confidence: 99%

Synthesis and Impregnation of Copper Oxide Nanoparticles on Activated Carbon through Green Synthesis for Water Pollutant Removal

et al. 2017

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In this article was developed a green synthesis of CuO nanoparticles on vegetal activated carbon (VAC), using pomegranate leaf extract as reducing and stabilizing agent in the removal of multiple pollutants. The impregnated carbons with CuO nanoparticles were characterized morphologically and structurally. The SEM and XRD analysis, after carbons modification, showed that the surface structure remained porous with CuO nanoparticles sizes between 40 and 78 nm. As concern to the contaminants atrazine, caffeine and diclofenac, it is observed that the maximum adsorption capacities practically did not suffer interference by the presence of 1.5% Cu nanoparticles, keeping their values very close to those obtained with pure carbon. The nitrate removal was favored by the impregnation of CuO nanoparticles, from 0.93 mg g-1 to 4.09 mg g-1. The results are promising and demonstrate that it is possible to obtain VAC impregnated whit nanoparticles of CuO by a non-polluting and low cost method.

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“…13,14 In our previous studies, we prepared some silver-based composites with graphene oxide (GO), 15 silicon oxide nanospheres, 16 and porous carbon. 17 These nanocomposites showed excellent antibacterial activity against Escherichia coli and Xanthomonas oryzae pv. oryzae.…”

Section: Introductionmentioning

confidence: 98%

Graphene oxide loaded with copper oxide nanoparticles as an antibacterial agent against Pseudomonas syringae pv. tomato

Yang

Cui

2017

RSC Adv.

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Bacterial speck caused by Pseudomonas syringae pv. tomato (Pst) is a major disease of tomatoes. Infection by Pst in the seedling stage could cause 75% of total yield loss and quality losses in tomatoes. Applying massive chemical bactericides to control this disease has caused undesirable pathogen resistance, environmental pollution, and threats to humans. Here, we developed a candidate antibacterial agent made from copper oxide nanoparticles loaded onto the surfaces of graphene oxide sheets (GO-Cu NPs). A series of characterization measurements showed that the nanocomposite had been successfully prepared. Antibacterial activity results indicated that GO-Cu NPs had a 16-times higher antibacterial activity than Kocide 3000. From further investigation, the GO-Cu NPs composite could lead to damaging the cell structure, increasing the level of reactive oxygen species, and decreasing the content of DNA in Pst cells. From an in vivo test, GO-Cu NPs at 4 and 8 mg mL À1 significantly reduced the severity of bacterial speck below 25% and the tomatoes had no phytotoxicity. Comparatively, 125 and 250 mg mL À1 were required for Kocide 3000 to achieve similar effects. Therefore, GO-Cu NPs composites as a high-efficiency biocide have great potential for managing crop diseases.

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Rice husk based porous carbon loaded with silver nanoparticles by a simple and cost-effective approach and their antibacterial activity

Cited by 46 publications

References 42 publications

Green synthesized amino-PEGylated silver decorated graphene nanoplatform as a tumor-targeted controlled drug delivery system

Green synthesized amino-PEGylated silver decorated graphene nanoplatform as a tumor-targeted controlled drug delivery system

Synthesis and Impregnation of Copper Oxide Nanoparticles on Activated Carbon through Green Synthesis for Water Pollutant Removal

Graphene oxide loaded with copper oxide nanoparticles as an antibacterial agent against Pseudomonas syringae pv. tomato

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