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Dangerous sequins

29.11.2017

According to environmentalists, small sticky sequins are very polluting the planet, especially the oceans.

"I think glitter should be banned because it's a microplastic," said Dr. Trisia Farrelly of New Zealand's Massey University.

Microplastics are particles of plastic less than five millimeters in length. Shiny microparticles attract animals that eat these dangerous objects. A study by marine biology professor Richard Thompson showed that pieces of plastic were found in every third fish caught in the UK, which means that they also ended up on the tables of the British.

"I was extremely upset when my daughter was given a shower gel with sparkles. After all, this means that they will fall into the sewers, which means they could potentially end up in the ocean," said marine biologist Richard Thompson, who coined and coined the term " microplastics" in 2004.

The UK is expected to ban glitter products in 2018. In most kindergartens in the country, the ban is already in effect. In the US, only seven states have bans on the use and sale of products like facial scrubs and shower gels that use microplastics.

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Energy from space for Starship 08.05.2024

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New method for creating powerful batteries 08.05.2024

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Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Major risk factor for gambling addiction 07.05.2024

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Random news from the Archive

Prototype anode for sodium-ion batteries 31.12.2013

A group of researchers from the Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, together with colleagues from Singapore and Israel, have created a new material that can be used to make anodes for sodium-ion batteries. Such batteries in the future may replace the lithium-ion batteries that have become widespread today.

Chemists from the Trypilska laboratory headed by Tatyana have found a way to create a layer of antimony sulfide from the so-called peroxo complexes. Scientists call compounds of various substances with the OOH group that way (employees of the Trypolskaya laboratory focused on p-group elements, mainly antimony and tin). This group is actually a hydrogen peroxide molecule (H2O2, HOOH) with one hydrogen atom separated from it.

During the experiment, graphene flakes were coated with a thin layer of antimony sulfide. These flakes were used in a composite material for battery electrodes, while instead of the lithium-ion technology common today, scientists conducted an experiment with sodium.

Sodium-ion batteries may have one significant advantage over lithium batteries: there are a lot of sodium reserves on Earth. For example, this element forms table salt. In theory, sodium batteries could be cheaper than lithium ones, but sodium ions are not built into ordinary graphite electrodes (or electrodes made from other available materials).

In their work, the researchers showed that antimony sulfide is suitable for sodium ions, and there is no need to make entire electrodes from it. Control measurements have shown that the new electrodes can accumulate up to 730 mAh per gram. Chemists estimate that antimony sulfide technology could help bring sodium-ion batteries up to a level comparable to lithium-ion batteries.

"This method of obtaining a composite material does not require special equipment and is very simple in instrumentation," said Petr Prikhodchenko, one of the authors of the work, in an interview with journalists. "It's very cheap and easy to implement, doesn't require a lot of energy, doesn't produce toxic waste, and can be easily scaled up to actual production," he said.

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