BROWSE

Related Scientist

Researcher

강주연
식물 노화·수명 연구단
more info

Spontaneous generation of hydrogen peroxide from aqueous microdroplets

Cited 0 time in webofscience Cited 0 time in scopus
30 Viewed 5 Downloaded
Title
Spontaneous generation of hydrogen peroxide from aqueous microdroplets
Author(s)
Lee J.K.; Walker K.L.; Han H.S.; Jooyoun Kang; Prinz F.B.; Waymouth R.M.; Hong Gil Nam; Zare R.N.
Publication Date
2019-09
Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, v.116, no.39, pp.19294 - 19298
Publisher
NATL ACAD SCIENCES
Abstract
© 2019 National Academy of Sciences. All rights reserved.We show H2O2 is spontaneously produced from pure water by atomizing bulk water into microdroplets (1 μm to 20 μm in diameter). Production of H2O2, as assayed by H2O2-sensitve fluorescence dye peroxyfluor-1, increased with decreasing microdroplet size. Cleavage of 4-carboxyphenylboronic acid and conversion of phenylboronic acid to phenols in microdroplets further confirmed the generation of H2O2. The generated H2O2 concentration was ∼30 μM (∼1 part per million) as determined by titration with potassium titanium oxalate. Changing the spray gas to O2 or bubbling O2 decreased the yield of H2O2 in microdroplets, indicating that pure water microdroplets directly generate H2O2 without help from O2 either in air surrounding the droplet or dissolved in water. We consider various possible mechanisms for H2O2 formation and report a number of different experiments exploring this issue. We suggest that hydroxyl radical (OH) recombination is the most likely source, in which OH is generated by loss of an electron from OH- at or near the surface of the water microdroplet. This catalystfree and voltage-free H2O2 production method provides innovative opportunities for green production of hydrogen peroxide
URI
https://pr.ibs.re.kr/handle/8788114/6870
ISSN
0027-8424
Appears in Collections:
Center for Plant Aging Research (식물 노화·수명 연구단) > Journal Papers (저널논문)
Files in This Item:
PNAS(2019) Spontaneous generation of hydrogen peroxide from.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse