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Entangled iodine and hydrogen peroxide formation in ice†

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Title
Entangled iodine and hydrogen peroxide formation in ice†
Other Titles
얼음 내 요오드에 의한 과산화수소 생성기작 연구
Authors
Baek, Yong Su
Kim, Kitae
Saiz-Lopez, Alfonso
Min, Dae Wi
Kim, Bomi
Choi, Wonyong
Choi, Cheol Ho
Subject
Chemistry; Physics
Keywords
ice chemistry; iodine; ozone depletion; polar regions
Issue Date
2020-08
Citation
Baek, Yong Su, et al. 2020. "Entangled iodine and hydrogen peroxide formation in ice†". PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 29(1): 16532-16532.
Abstract
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 O(2)in acidic icy water, which produces both I as well as O2H radicals. I recombines with I(-)to produce I(2)(-)at a diffusion-limited rate, followed by formation of I(3)(-)through disproportionation, while O2H yields H(2)O(2)with I(-)and a proton dissolved in icy water.
URI
https://repository.kopri.re.kr/handle/201206/11862
DOI
http://dx.doi.org/10.1039/d0cp02966a
Appears in Collections  
2020-2020, Investigation of ice microstructure properties for developing low-temperature purification and environment/energy materials (20-20) / Kim, Kitae (PE20030)
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