نتایج جستجو برای: silica encapsulated fe2o3 nanoparticles

تعداد نتایج: 155761  

Hadi Hassanzadeh Majid Jadidi, Monireh Hoseinzadeh Sahar Jafari Shima Moshfegh Shima saidi Shoka Sharyari Shokoufeh Souri Tahereh Khani

Introduction: Breast cancer is the most common cancer among women in the world and in Iran. Sono- photodynamic therapy is a new modality for cancer treatment. In this method, a sensitizer that activates by ultrasound and light produces photochemical and synchochemical activities, thereby causing the toxicity and destruction of tumor cells. The use of dual frequency ultrasound...

2014
Khosro Zangeneh Kamali Pandikumar Alagarsamy Nay Ming Huang Boon Hoong Ong Hong Ngee Lim

Hematite (α-Fe2O3) nanoparticles were synthesized by the solid transformation of ferrous hydroxide and ferrihydrite in hydrothermal condition. The as-prepared α-Fe2O3 nanoparticles were characterized by UV-vis, PL, XRD, Raman, TEM, AFM, FESEM, and EDX analysis. The experimental results indicated the formation of uniform hematite nanoparticles with an average size of 45 nm and perfect crystallin...

2017
N.G. Martin Palmqvist Gulaim A. Seisenbaeva Peter Svedlindh Vadim G. Kessler

Yttrium doping-stabilized γ-Fe2O3 nanoparticles were studied for its potential to serve as a plant fertilizer and, through enzymatic activity, support drought stress management. Levels of both hydrogen peroxide and lipid peroxidation, after drought, were reduced when γ-Fe2O3 nanoparticles were delivered by irrigation in a nutrient solution to Brassica napus plants grown in soil. Hydrogen peroxi...

Journal: :Frontiers in bioscience 2012
Carolina Salvador-Morales Pedro M Valencia Anjali B Thakkar Edward W Swanson Robert Langer

Multifunctional hybrid nanoparticles combine some of the unique physical and chemical characteristics of two or more classes of materials, such as polymers, liposomes, metals, quantum dots and mesoporous silica among others, to create a versatile and robust new class of nanoparticles. Here we discuss the most recent synthetic strategies to create these hybrid systems and analyze four key design...

2011
G. A. Sotiriou A. M. Hirt P-Y. Lozach A. Teleki F. Krumeich S. E. Pratsinis

Hybrid magnetic/plasmonic nanoparticles possess properties originating from each individual material. Such properties are beneficial for biological applications including bio-imaging, targeted drug delivery, in vivo diagnosis and therapy. Limitations regarding their stability and toxicity, however, challenge their safe use. Here, the one-step flame synthesis of composite SiO2-coated Ag/Fe2O3 na...

Journal: :Advanced healthcare materials 2013
Fabiola Porta Gerda E M Lamers Jess Morrhayim Antonia Chatzopoulou Marcel Schaaf Hans den Dulk Claude Backendorf Jeffrey I Zink Alexander Kros

Site-specific stimuli responsive nanomaterials are an important breakthrough for the improvement of modern therapies in nanomedicine. Mesoporous silica nanoparticles are good candidate for the development of targeted delivery system as their surface can be easily modified with functional groups in order to achieve controlled and specific release. We designed a drug delivery system based on meso...

Journal: :ACS applied materials & interfaces 2014
Mohamed F Foda Liang Huang Feng Shao He-You Han

Bright and stable CuInS2/ZnS@SiO2 nanoparticles with near-infrared (NIR) emission were competently prepared by incorporating the as-prepared hydrophobic CuInS2/ZnS quantum dots (QDs) directly into lipophilic silane micelles and subsequently an exterior silica shell was formed. The obtained CuInS2/ZnS@SiO2 nanoparticles homogeneously comprised both single-core and multicore remarkable CuInS2/ZnS...

2016
Kuen-Lin Chen Yao-Wei Yeh Jian-Ming Chen Yu-Jie Hong Tsung-Lin Huang Zu-Yin Deng Chiu-Hsien Wu Su-Hsien Liao Li-Min Wang

Magnetoplasmonic nanoparticles, composed of a plasmonic layer and a magnetic core, have been widely shown as promising contrast agents for magnetic resonance imaging (MRI) applications. However, their application in low-field nuclear magnetic resonance (LFNMR) research remains scarce. Here we synthesised γ-Fe2O3/Au core/shell (γ-Fe2O3@Au) nanoparticles and subsequently used them in a homemade, ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2006
M J Rosemary Ian MacLaren T Pradeep

The antibacterial activity of ciprofloxacin-encapsulated silica nanoshells synthesized from gold@silica core-shell nanoparticles has been investigated. The minimum inhibitory concentration of the material was found using the agar dilution method, and it showed better antibacterial activity compared to free ciprofloxacin in the case of Escherichia coli DH5, whereas the same activity was found fo...

2017
Muhammad Ikram-Ul-Haq Partha Sarathi Mukherjee Rita Khanna

Light-weight ferro-aluminium alloys are finding increasing application in the transport sector to reduce overall weights, energy costs and CO2 emissions. As the primary production processes of both Fe and Al are among the most energy-intensive industrial processes in the world, there is an urgent need to develop alternate routes for producing Fe-Al alloys. Our group has successfully produced th...

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