Behavior of bromide in the photoelectrocatalytic process and bromine generation using nanoporous titanium dioxide thin-film electrodes.
In this study, the photoelectrocatalytic behavior of bromide and generation of bromine using TiO2 was investigated in the separate anode and cathode reaction chambers. Our results show that the generation of bromine begins around a flatband potential of -0.34 V vs. standard calomel electrode (SCE) at pH 3.0 under UV illumination and increases with an increase in positive potential, finally reaching a steady-state concentration at 1.0 V vs. SCE. Maximum bromine formation occurs over the range of pH 4-6, decreasing sharply at conditions where the pH>7.
Selcuk
Huseyin
H
Environmental Chemistry and Technology Program, University of Wisconsin-Madison, 660 N. Park Street, Madison, WI 53706-1484, USA. selcukh@itu.edu.tr
Sene
Jeosadaque J
JJ
Zanoni
Maria Valnice B
MV
Sarikaya
Hasan Z
HZ
Anderson
Marc A
MA
D001965:Bromides / Q000737:chemistry*; D001966:Bromine / Q000737:chemistry*; D002384:Catalysis; D004563:Electrochemistry; D004566:Electrodes; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D014025:Titanium
D001965:Bromides; C009495:titanium dioxide; D014025:Titanium; D001966:Bromine