Results 261 to 270 of about 116,842 (300)

Impacts of metal and metal oxide nanoparticles on marine organisms

Environmental Pollution, 2014
Increasing use of metal and metal oxide nanoparticles [Me(O)NPs] in products means many will inevitably find their way into marine systems. Their likely fate here is sedimentation following hetero-aggregation with natural organic matter and/or free anions, putting benthic, sediment-dwelling and filter feeding organisms most at risk.
Tony J, Baker, Charles R, Tyler, Tamara S, Galloway   +2 more
openaire   +2 more sources

Toxicological study of metal and metal oxide nanoparticles in zebrafish

Journal of Applied Toxicology, 2019
AbstractMetal and metal oxide nanoparticles have been widely used in catalytic, electronic and biomedical fields. It is necessary to investigate their toxicity and potential hazards to human and aquatic ecosystems. Zebrafish (Danio rerio), as a promising animal model, has been increasingly utilized to assess the toxicity of nanoparticles. Zebrafish has
Changcun Bai, Meng Tang
openaire   +2 more sources

Green synthesis of metal oxide nanoparticles

Lomonosov chemistry journal
Active development of nanotechnology and growing demand for nanomaterials, including metal oxide nanoparticles, makes the problem of developing economical and environmentally friendly synthesis methods urgent. Green chemistry and green synthesis methods based on its principles are an effective solution to this problem.
T. I. Shabatina, A. Bose, O. I. Vernaya, Y. A. Gromova, M. Ya. Melnikov   +4 more
openaire   +1 more source

Enrofloxacin oxidative degradation facilitated by metal oxide nanoparticles

Chemosphere, 2012
The activity of copper oxide, titanium carbide and silicon nitride nanoparticles for the oxidative degradation of environmentally relevant concentrations (μg L(-1) range) of enrofloxacin - an important veterinary antibiotic drug - in aqueous solutions was investigated. With hydrogen peroxide as an oxidative agent, both copper oxide and titanium carbide
Lea, Fink, Ishai, Dror, Brian, Berkowitz
openaire   +2 more sources

Oxidation kinetics of metallic nanoparticles

Surface Science, 2003
The performance of nanomaterials in specific applications can be greatly affected by a thin oxide layer on the surface. In this paper we put forward a model for the oxidation kinetics of metallic nanoparticles. For very thin oxide coatings on nanoparticles, it is necessary to take into account non-linear diffusion of the rate-determining ions.
Gunnar A. Niklasson, Richard Karmhag
openaire   +1 more source

Resistivity Sensors of Metal Oxides with Metal Nanoparticles as Catalysts

2016
The metal oxide resistivity sensors are the most common sensors for reducing and oxidizing gases, due to their low cost, easiness of preparation and signal processing. The sensing properties of a metal oxide film depend on the surface roughness, porosity, crystallinity and some other factors, which differentiate for each preparation method.
Mousdis, George A., Kompitsas, Michael G., Tsamakis D., Stamataki M., Petropoulou G., Koralli P.   +5 more
openaire   +2 more sources

Metal and Metal Oxides Nanoparticles as Nanofillers for Biodegradable Polymers

ChemPhysChem
AbstractPolymeric materials, despite their many undeniable advantages, nowadays are a major environmental challenge. Thus, in recent years biodegradable polymer matrices have been widely used in various sectors, including the medicinal, chemical, and packaging industry.
Agata Wawrzyńczak, Jagoda Chudzińska, Agnieszka Feliczak‐Guzik   +2 more
openaire   +2 more sources

Metal oxide encapsulated nanoparticles

Journal of Materials Chemistry, 2003
Atomistic computer simulation techniques have been employed to generate a model for a 25 nm3 CaO nanoparticle, encapsulated within the near surface region of an MgO lattice. We find that the ‘internal’ morphology of the resulting encapsulated CaO nanoparticle is ‘pseudo-spherical’ and exhibits {100}, {110} and {111} facets.
Dean C. Sayle, James A. Doig, Stephen C. Parker, Graeme W. Watson   +3 more
openaire   +1 more source

Toxicity of Metal and Metal Oxide Nanoparticles

Metal and metal oxide nanoparticles (NPs) show great promise in biomedical applications, but their toxicity varies. Metallic NPs are stable, while metal oxide and alloy NPs dissolve in biological conditions, releasing metal ions that generate reactive oxygen species (ROS), causing oxidative stress and cellular damage.
Elkhatim Hassan Abdelgadir, Fauzia Ashfaq, Sakshi Gupta, Nimish Dhakad, Sachil Kumar, Shipra Rohatgi   +5 more
openaire   +1 more source

A review: metal and metal oxide nanoparticles for environmental applications

Nanoscale
Environmental applications of metal and metal oxide nanoparticles primarily comprise contaminant adsorbents, catalysts, and sensors for hazardous substances, etc.
Zhihua Yang, Jiawei Shen
openaire   +2 more sources