Scientists from the Ivanovo State University of Chemistry and Technology have created new photocatalysts. They are capable of decomposing toxic waste. This was reported by the Russian Science Foundation (RSF).
The new technology is 10 times cheaper than analogs. The essence of the method lies in the ability of light to convert oxygen into its active form. Due to this, it is possible to break down toxic waste from textile and pharmaceutical enterprises into non-toxic compounds — water and carbon dioxide.
Scientists have synthesized six photocatalysts. They are capable of generating singlet oxygen under the action of visible light (solar or LED lamps) with an efficiency of 49% to 62%. Whereas previously known catalysts based on tungsten and titanium provide a conversion efficiency of 30%.
We plan to test photocatalysts with different chemical structures, as well as test them in combination with other substances that decompose pollutants, such as titanium dioxide, carbon nitride, and graphene. This will improve not only the properties of the photocatalysts currently used, but also develop new ones and thereby improve the technology for decomposing toxic chemical compounds in water.
The resulting photocatalysts can be used at treatment facilities of factories and plants. The new technology will reduce the cost of the waste treatment process, since LED lamps are 65-70 times cheaper than ultraviolet analogs.
Earlier www1.ru reported that Rosatom is reclaiming the Krasny Bor toxic waste landfill near St. Petersburg.
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