نتایج جستجو برای: chitosan co irni oxide nanoparticles

تعداد نتایج: 601962  

2017
Peter Sobolewski Agata Goszczyńska Małgorzata Aleksandrzak Karolina Urbaś Joanna Derkowska Agnieszka Bartoszewska Jacek Podolski Ewa Mijowska Mirosława El Fray

We present an ink platform for a printable polymer-graphene nanocomposite that is intended for the development of modular biosensors. The ink consists of catechol-modified chitosan and reduced graphene oxide decorated with platinum nanoparticles (rGO-Pt). We modified the chitosan with catechol groups, in order to obtain adhesive properties and improve solubility. Dispersions of rGO-Pt in ethyle...

Journal: :iranian journal of hydrogen & fuel cell 2015
karim kakaei hussein gharibi soheyla abbaspour

we report a pd-co (3:1)/graphene oxide (pd3co /go) catalyst through a one-step strategy. go is synthesized from graphite electrodes using ionic liquid-assisted electrochemical exfoliation. controllable go-supported pd3co electrocatalystis then was reduced by ethylene glycol as a stabilizing agent to prepare highly dispersed pdco nanoparticles on carbon graphene oxide to be used as oxygen reduct...

Journal: :journal of nanostructures 2013
s. farhadi a. sepahdar k. jahanara

in this paper, the mer-co(nh3)3(no2)3 complex was used as a new precursor for synthesizing spinel-type cobalt oxide nanoparticles (co3o4nps).thermal decomposition of the complex at low temperature (175 °c) resulted in the co3o4nps without using expensive and toxic solvents or complicated equipment. xrd, ft-ir, sem, edx, and tem were employed to characterize the product, and its optical and magn...

2017
Ravi Kant Upadhyay

Present review article describes main causes of chronic kidney disease a major health problem public health problem round the globe. Disease has multiple etiologies related to sequential pathophysiological stages. It has major concern with chronic changes in renal structure and that severely alter glomerular filtration rate in patients. This article explains CKD biomarkers in brief i.e., serum ...

2016
Xiao-Yu Xiao Ying-Xian Zhu Ju-Yuan Bu Guo-Wei Li Jian-Hui Zhou Shao-Peng Zhou

The purpose of the present study was to evaluate the neuroprotective efficacy of optimized thymoquinone loaded PLGA-chitosan nanoparticles delivered via nose to brain route in the rodent cerebral ischemia-reperfusion model. The neuroprotective efficacy of the optimized thymoquinone loaded PLGA-chitosan nanoparticles was evaluated in middle cerebral artery occluded rats by various pharmacodynami...

Journal: :Oriental journal of chemistry 2023

Herein, we report for the first time, synthesis of silver nanoparticles-nitrogen doped graphene oxide-chitosan nanocomposite (SGC) from aqueous leaf extract Curcuma caesia plant and explored bacterial toxicology behavior SGC via agar disc diffusion method. is a medicinal herb utilized as reducing agent reduction silver-to-silver ions. Graphene oxide significant two-dimensional carbon nanomateri...

2011
F. Talaei M. Azhdarzadeh H. Hashemi Nasel M. Moosavi A. Foroumadi R. Dinarvand F. Atyabi

BACKGROUND AND THE PURPOSE OF THE STUDY Studies show that chitosan nanoparticles increase mucoadhesivity and penetration of large molecules across mucosal surface. The aim of the present study was to investigate the use of thiolated chitosan in the development of polysaccharide-coated nanoparticles in order to confer specific functionality to the system. METHODS Methyl methacrylate nanopartic...

2016
Manabu Tanaka Takuya Kageyama Hirotaka Sone Shuhei Yoshida Daisuke Okamoto Takayuki Watanabe

Lithium metal oxide nanoparticles were synthesized by induction thermal plasma. Four different systems-Li-Mn, Li-Cr, Li-Co, and Li-Ni-were compared to understand formation mechanism of Li-Me oxide nanoparticles in thermal plasma process. Analyses of X-ray diffractometry and electron microscopy showed that Li-Me oxide nanoparticles were successfully synthesized in Li-Mn, Li-Cr, and Li-Co systems...

2012
Ling Yien Ing Noraziah Mohamad Zin Atif Sarwar Haliza Katas

The need of natural antimicrobials is paramount to avoid harmful synthetic chemicals. The study aimed to determine the antifungal activity of natural compound chitosan and its nanoparticles forms against Candida albicans, Fusarium solani and Aspergillus niger. Chitosan nanoparticles were prepared from low (LMW), high molecular weight (HMW) chitosan and its derivative, trimethyl chitosan (TMC). ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2005
Li-Qun Wu Kyuyong Lee Xiang Wang Douglas S English Wolfgang Losert Gregory F Payne

Nanoscale particles offer a variety of interesting properties, and there is growing interest in their assembly into higher ordered structures. We report that the pH-responsive aminopolysaccharide chitosan can mediate the electrodeposition of model nanoparticles. Chitosan is known to electrodeposit at the cathode surface in response to a high localized pH. To demonstrate that chitosan can mediat...

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