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Is there Graphene in the Air? How to find out?
Graphene’s been available on the Market for some years, and it’s production reaches several tons/year in many produces around the world. According to the website Statista1, leading companies in this market already have a market capitalization of over one billion US dollars. We have products on the market containing graphene and there is an expectation and a lot of investment in the development of new nanoproducts containing the nanomaterial, for [...]
Safe-by-design and risk governance: paths to sustainability and safety in nanotechnology
In recent years the term “Safety by Design” or “Safe-by-Design” (SbD) has gained a lot of attention in the nanotechnology universe, nationally and internationally. In Brazil, it is used without translation, which perhaps contributes to the strangeness and questions about its real meaning. Another term that has been used for a few years, and it is widely used in the context of nanoHSE, is “nano risk governance”. In this post, these [...]
What do we know about the toxicity of nanoforms? The example of carbon nanotubes
We analyzed the example of multi-walled carbon nanotubes Broadly, it is possible to say that there are no chemicals that do not have toxicity. In fact, there are no chemicals that do not have harmful effects on biological systems. It will always be necessary to evaluate the type of effect produced, the needed dose to produce this effect, the characteristics and properties of the substance, and some information [...]
“Nano” in injectable drugs and the dynamic immune response
General aspects of the immune response against nanocarriers The immune response against nanocarriers occurs in a similar way to microorganisms, including viruses and bacteria. As expected, the complexity of this response is high and depends on several factors. The immune response begins immediately after transposing physical and chemical barriers, such as: the skin; mucous membranes; the tear; gastric juice; secretions in general. These barriers are a challenge for nanocarriers whose [...]
Nano in “Fashion”: silver nanoparticles
Silver nanoparticles bring innovation to the textile industry Due to its recognized antimicrobial action, the current context has highlighted the possibilities of applying some metallic nanoparticles (NPs), such as silver (Ag). These nanoparticles can be structured in a polymeric matrix, in functional fabrics, or in aqueous suspensions, such as sanitizing sprays. In a remarkable growth for some years, nano-silver is used in an increasing number of medical and [...]
Nanotechnology in Mining
Nanotechnology can be very useful for processes and can collaborate with the practice of sustainable mining Current scenario of nanotechnology in mining When analyzing the current contribution of nanotechnology in mining, there are few examples of investments in research that focus on improving the processes that involve mining activity in itself. Perhaps this is because mining is a well-established sector of the economy, which values incremental innovation, seeking, [...]