Publications by authors named "Darius Arndt"
Article Synopsis
- The study investigated how different coatings on iron oxide nanoparticles (IONP) affect their stability and toxicity to the water flea Daphnia magna.
- Four types of coatings were used: ascorbate, citrate, dextran, and polyvinylpyrrolidone, each impacting the nanoparticles' stability and their interactions with the environment.
- The findings revealed that some coatings, like ascorbate and dextran, caused significant immobilization effects on the Daphnia, while polyvinylpyrrolidone showed no negative effects despite high ingestion rates, highlighting that toxicity is linked more to colloidal stability and ion release than to hydrodynamic size.
Ethylene diamine-assisted synthesis of iron oxide nanoparticles in high-boiling polyolys.
J Colloid Interface Sci
March 2014
The decomposition of iron(III) acetylacetonate in high-boiling polyols such as diethylene glycole is an efficient way to produce water-soluble iron oxide nanoparticles (IONPs) with small sizes. We present an extension of this method by introducing ethylene diamine (EDA) or diethylene triamine (DTA) as a structure-directing agent and adding polyvinylpyrrolidone (PVP) as a stabilizing agent. The synthesis was studied with respect to effects of the chain length of the polyol used as solvent, the chain length of the structure-directing agent, the presence of PVP, the heating rate, and the nature of the precursor.
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- Iron oxide nanoparticles (IONP) are being studied to see if they can be safely used in MRI scans and help clean up the environment.
- Researchers created special IONP particles and tested them to see how they affect living things like cells and tiny water fleas.
- Results showed that at low concentrations, IONP didn’t harm cells or the water fleas much, and they might even help reduce the use of more toxic materials in the environment.