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From The Mind Come Drugs of the Future
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관리자 2022-12-08 15:00
Publication: Physical Chemistry Chemical Physics
Date of Publication: 15th July 2020
Authors: Yong Su Baek, a Kitae Kim, Alfonso Saiz-Lopez,d Dae Wi Min, Bomi Kim, Wonyong Choie and Cheol Ho Choi
DOI: 10.1039/d0cp02966a
Ice-core records show that anthropogenic pollution has increased the global atmospheric concentrations of hydrogen peroxide and iodine since the mid-20th century. Here, for the first time, we demonstrate a highly efficient mechanism that synergistically produces them in icy water conditions. This reaction is aided by a key intermediate IO2H, formed by an I-_ ion with a dissolved O2 in acidic icy water, which produces both I as well as O2H radicals. I recombines with I- to produce I2- at a diffusion-limited rate, followed by formation of I3- through disproportionation, while O2H yields H2O2 with I- and a proton dissolved in icy water.