Laser flash photolysis of titanium dioxide suspensions for the evaluation of solvent-mediated radical reactions

被引：2
|
作者：
Hainer, Andrew [1 ]
Joshi, Neeraj [1 ]
Scaiano, Juan C. [1 ]
机构：
[1] Univ Ottawa, Dept Chem & Biomol Sci, 10 Marie Curie, Ottawa, ON K1N 6N5, Canada
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2023年 / 25卷 / 04期
基金：
加拿大创新基金会; 加拿大自然科学与工程研究理事会;
关键词：
ABSORPTION-SPECTRA; TRAPPED HOLES; TIO2; PHOTOCHEMISTRY; PHOTOPHYSICS; TRANSIENT; OXIDATION; POWDER;
D O I：
10.1039/d2cp05170b
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The chemistry originating from the scavenging of the highly electrophilic hole in TiO2 can be readily monitored using laser flash photolysis techniques. Dilute suspensions are sufficiently transparent in the UV region that long lived signals from reactions of solvent radicals with 1,1-diphenylethylene can be readily monitored. Transient signals originating from hole, electron and trapped radicals are extremely long lived showing stretched exponentials (nanoseconds to milliseconds), adequately described by fractal models.
引用
收藏
页码：2747 / 2751
页数：5
相关论文
共 50 条
  • [21] Photochemical reactions between bromophenols and hydroxyl radical generated in aqueous solution: A laser flash photolysis study
    Jiang, Jingqiu
    Zhao, Hongxia
    Liu, Sisi
    Chen, Xiuying
    Jiang, Xiao
    Chen, Jingwen
    Quan, Xie
    JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2017, 336 : 63 - 68
  • [22] Solvent-mediated proton transfer reactions in cytosine: an ab initio study
    Morpurgo, S
    Bossa, M
    Morpurgo, GO
    ADVANCES IN QUANTUM CHEMISTRY, VOL 36: FROM ELECTRONIC STRUCTURE TO TIME-DEPENDENT PROCESSES, 1999, 36 : 169 - 183
  • [23] REACTIONS OF HALOGEN OXIDES STUDIED BY FLASH PHOTOLYSIS .2. FLASH PHOTOLYSIS OF CHLORINE MONOXIDE AND OF CLO FREE RADICAL
    BASCO, N
    DOGRA, SK
    PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1971, 323 (1554): : 401 - &
  • [24] Laser flash photolysis kinetic studies of α-methoxy-β-phosphatoxyalkyl radical heterolysis reactions:: A method for alkoxyalkyl radical cation detection
    Newcomb, M
    Miranda, N
    Huang, XH
    Crich, D
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (25) : 6128 - 6129
  • [25] FLASH PHOTOLYSIS AND SPECTROSCOPY A NEW METHOD FOR THE STUDY OF FREE RADICAL REACTIONS
    PORTER, G
    PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1950, 200 (1061): : 284 - &
  • [26] On Photoinduced Reactions of Quinolones in Titanium Dioxide Suspensions (EPR Investigations)
    Dvoranova, D.
    Barbierikova, Z.
    Stasko, A.
    Milata, V.
    Bella, M.
    Brezova, V.
    PROCEEDINGS OF THE 6TH EUROPEAN MEETING ON SOLAR CHEMISTRY & PHOTOCATALYSIS: ENVIRONMENTAL APPLICATIONS, 2010, : 365 - 366
  • [27] Laser flash photolysis studies of the reaction of arylhalocarbenes with tetramethylethylene as a function of solvent
    Çelebi, S
    Tsao, ML
    Platz, MS
    JOURNAL OF PHYSICAL CHEMISTRY A, 2001, 105 (07): : 1158 - 1162
  • [28] Photocatalytic oxygenation of cyclohexane on titanium dioxide suspensions: Effect of the solvent and of oxygen
    Boarini, P
    Carassiti, V
    Maldotti, A
    Amadelli, R
    LANGMUIR, 1998, 14 (08) : 2080 - 2085
  • [29] LASER FLASH-PHOTOLYSIS STUDIES OF RADICAL-RADICAL REACTION-KINETICS
    THORN, RP
    CRONKHITE, JM
    DAYKIN, EP
    NICOVICH, JM
    WINE, PH
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1992, 203 : 100 - PHYS
  • [30] REACTION OF TRIETHYLSILYL RADICAL WITH SULFIDES, A LASER FLASH-PHOTOLYSIS STUDY
    SOUNDARARAJAN, N
    JACKSON, JE
    PLATZ, MS
    JOURNAL OF PHYSICAL ORGANIC CHEMISTRY, 1988, 1 (01) : 39 - 46
12345