نتایج جستجو برای: nano chitosan

تعداد نتایج: 67189  

2015
Ahmed A. Galhoum Mohammad G. Mafhouz Sayed T. Abdel-Rehem Nabawia A. Gomaa Asem A. Atia Thierry Vincent Eric Guibal

Cysteine-functionalized chitosan magnetic nano-based particles were synthesized for the sorption of light and heavy rare earth (RE) metal ions (La(III), Nd(III) and Yb(III)). The structural, surface, and magnetic properties of nano-sized sorbent were investigated by elemental analysis, FTIR, XRD, TEM and VSM (vibrating sample magnetometry). Experimental data show that the pseudo second-order ra...

ژورنال: Medical Laboratory Journal 2012
Negahdary M (MSc), , Rezaei-Zarchi S (PhD), , Saadatmand M M (MSc), , Yazdanshenas M E (PhD), , Yousefi-telori B (BSc), ,

Abstract Background and objectives: In this research, the formation of chitosan-TiO2 nanocomposite and its antibacterial effect on Escherichia coli and staphylococcus aureus was investigated Material and Methods: to study the results, we used Scanning electron microscopy (SEM) and transition electron microscopy (TEM) images, infrared (IR) spectroscopy and ultraviolet-visible. Optical Density (O...

Journal: :Biotechnology & Biotechnological Equipment 2007

H. Ahmadi Tafti, J. Izadi Mobarakeh N. Kiaie R. Mehdinavaz Aghdam, Sh. Hojati Emami

In recent years, utilization of chitosan /tripolyphosphate nanoparticles has been considered greatly as protein delivery vehicles. Effects of a variety of factors on final characteristics of nanoparticles have been studied by many investigators. Although, the objective of this study was to achieve smaller chitosan nano carriers via changing fabrication parameters such as pH and temperature and ...

Journal: :Fen ve mühendislik bilimleri dergisi 2022

Sonokimyasal reaksiyonlarda, sıvıdaki ultrasonik dalgaların ve kabarcıkların etkileşimi, kimyasal aktivitenin başlaması veya artması gibi birçok olaya neden olabilir. Nano malzemelerin sentezinde akustik kavitasyon sırasında oluşan H OH radikalleri bir çok yükseltgenme indirgemeleri tetikler. Bu çalışmada, sonokimyasal oluşum ile katalitik biyomateryal çekirdek/kabuk morfolojisinin sentezi dalg...

Journal: :Brazilian Journal of Chemical Engineering 2009

Journal: :IOP Conference Series: Materials Science and Engineering 2018

Journal: :Revista Internacional De Contaminacion Ambiental 2023

This work presents the morphology and characterization of chitosan nanoparticles crosslinked with lecithin in form nano-onions obtained by an easy, economical, possibly scalable method from a polymeric precursor known as chitosan. The creation new products using shrimp waste is fundamental factor avoiding water pollution. These materials have positive impact they add value to waste, provide opp...

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