Mechanistic interpretations of the dye-sensitized formation of hydrogen peroxide in an aqueous solution.

スポンサーリンク

概要

• 論文の詳細を見る

• Kinetic studies of the photosensitized formation of hydrogen peroxide and hyperoxide ions in a mixed aqueous solution of eosine, oxygen, and EDTA have been attempted on the basis of a switch-over of the primary processes, <I>i.e.</I>, the so-called DD, DR, and DO mechanisms. The rate constants for reactions of E<SUP>+</SUP>···E<SUP>−</SUP> and E<SUP>+</SUP>···O<SUB>2</SUB><SUP>−</SUP> intermediates with oxygen and EDTA were obtained. The yield of hydrogen peroxide <I>via</I> the DO-initiated mechanism was enhanced as much as one order of magnitude (≈0.012) by the addition of 0.15 mol dm<SUP>−3</SUP> of sodium borate or sodium carbonate. The maximum yield, 0.08, of hydrogen peroxide was obtained in an aerated aqueous solution of 1.0×10<SUP>−4</SUP> mol dm<SUP>−3</SUP> of eosine, 5.0×10<SUP>−2</SUP> mol dm<SUP>−3</SUP> of EDTA, and 8.8×10<SUP>−2</SUP> mol dm<SUP>−3</SUP> of sodium borate.

• 公益社団法人 日本化学会の論文

著者

• Usui Yoshiharu

  Department Of Achemistry Faculty Of Science Ibaraki University

• Kobayashi Ei-jurou

  Department of Chemistry, Faculty of Science, Ibaraki University

• Kazami Akira

  Department of Chemistry, Faculty of Science, Ibaraki University

• Sakuma Shinobu

  Department of Chemistry, Faculty of Science, Ibaraki University

関連論文

• Neutral 1,4-Bis(3-thiapentylxanthato)butane as Sensing Material for Samarium(III) Ion
• ESR of the Anion Radical of 2,6-Dithioxobenzo[1,2-d:4,5-d']bis[1,3]dithiole-4,8-dione. Observation of the Satellites of ^O, ^C, and ^S and the Second-Generation Satellites due to Both ^C and ^S in Natural Abundance
• Synthesis of New Cationic Schiff Base Complexes of Copper(II) and Their Selective Binding with DNA
• Direct Observation of Acid-Base Interaction by Means of Mass Spectrometry for Clusters
• Mechanistic interpretations of the dye-sensitized formation of hydrogen peroxide in an aqueous solution.
• The photoreduction and photosensitized reduction of dyes bound to a surfactant micellar surface.
• The mechanism of electron transfer reaction for xanthene dye-sensitized formation of methyl viologen radical.
• Kinetic studies of photosensitized oxygenation by singlet oxygen in aqueous micellar solutions.
• Kinetic Studies of Photosensitized Oxidation through Semioxidized Eosine in an Aqueous Solution
• An efficient regeneration of singlet oxygen from 2,5-diphenylfuran endoperoxide produced by a dye-sensitized oxygenation.

スポンサーリンク