9 декабря 2021  |  
7:10 PM  November 9, 2021

TPU scientists found a way to make pesticide "traps" from PET waste

© РИА Томск. Павел СтефанскийTPU scientists found a way to make pesticide traps from PET waste

TOMSK, Nov 9 – RIA Tomsk. Scientists of Tomsk Polytechnic University (TPU) have synthesized a new material that decomposes a dangerous agricultural pesticide paraxon-ethyl in water; such a catalyst can be obtained from plastic waste, for example PET bottles, the university's website said.

Earlier it was reported that the university's scientists were working on functional waste recycling. For instance, they have invented a way to create a sorbent to remove imidacloprid, a chemical used in agriculture, in particular, to control insects from water. The sorbent belongs to a class of promising materials: metal-organic frameworks (MOF). TPU chemists used PET bottles to produce the frameworks.

"The essence of the methods is to directly obtain products with high added value from secondary sources, bypassing the stages of additional processing. Earlier we had already synthesized efficient sorbents for insecticides from them, but we decided to go further and make a material that could not only accumulate ecotoxicants, but also decompose them", – the university press service quotes the leader of the scientific group Pavel Postnikov.

The report specifies that the material is pellets from bottles (or PET) on which scientists have grown metal-organic frameworks of zirconium ions, also included silver nanoparticles.

"Metal-organic frameworks and materials using them are good sorbents, a very promising area. They work as traps for certain molecules. But often their catalytic activity is insufficient. To overcome this barrier, we decided to use the effect of plasmon resonance", – the press service quotes one of the researchers Oleg Semyonov.

As explained in the report, this effect occurs at the surface of metals when irradiated with light, and appear quasiparticles plasmon, which affect the chemical transformation. Experiments by scientists have shown that in one hour the material can decompose about 95% of paraxon-ethyl in high concentration solutions. This exceeds the efficiency of already known catalysts.

Сайт РИА Томск /riatomsk.ru/ содержит информацию, подготовленную Региональным информационным агентством "Томск" (РИА Томск) с территорией распространения – Российская Федерация, зарубежные страны.
РИА Томск зарегистрировано в Федеральной службе по надзору в сфере связи, информационных технологий и массовых коммуникаций (Роскомнадзор) 06 ноября 2019 г. Свидетельство о регистрации ИА № ФС 77-77122.
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