Langmuir–Hinshelwood and Light-Intensity Dependence Analyses of Photocatalytic Oxidation Rates by Two-Dimensional-Ladder Kinetic Simulation

2018 ◽  
Vol 122 (50) ◽  
pp. 28748-28756 ◽  
Author(s):  
Yoshio Nosaka ◽  
Atsuko Y. Nosaka
Keyword(s):  
Light Intensity ◽  
Photocatalytic Oxidation ◽  
Kinetic Simulation ◽  
Two Dimensional ◽  
Intensity Dependence ◽  
Oxidation Rates

scholarly journals Light intensity dependence of the kinetics of the photocatalytic oxidation of nitrogen(ii) oxide at the surface of TiO2

2013 ◽  
Vol 15 (48) ◽  
pp. 20876 ◽  
Author(s):  
Ralf Dillert ◽  
Astrid Engel ◽  
Julia Große ◽  
Patrick Lindner ◽  
Detlef W. Bahnemann
Keyword(s):  
Light Intensity ◽  
Photocatalytic Oxidation ◽  
Intensity Dependence ◽  
Kinetics Of

Two-Dimensional Modeling of an Externally Irradiated Slurry Photoreactor

2013 ◽  
Vol 11 (2) ◽  
pp. 675-685 ◽  
Author(s):  
Giovanni Palmisano ◽  
Vittorio Loddo ◽  
Vincenzo Augugliaro
Keyword(s):  
Light Intensity ◽  
Photocatalytic Oxidation ◽  
Diffuse Radiation ◽  
Isotropic Scattering ◽  
Organic Substrates ◽  
Photochemical Degradation ◽  
Two Dimensional ◽  
Photocatalytic Reactor ◽  
Fitting Procedure ◽  
Intensity Field

Abstract A batch cylindrical photocatalytic reactor, externally irradiated by 1–6 UV fluorescent lamps and containing a stirred slurry of polycrystalline TiO2, was modeled by coupling a modified Langmuir–Hinshelwood kinetics together with a two-dimensional light intensity field. The radiation field has been determined on the main assumptions of diffuse radiation, isotropic scattering and negligible backward reflected photon flow. The model has been applied to the photocatalytic oxidation of organic substrates which do not undergo homogeneous photochemical degradation. The model is characterized by the following four parameters: the kinetic constants of substrate adsorption, desorption and degradation and the exponent of the power law expressing the kinetics dependence on the light intensity. The model constants may be determined by applying a simple least-squares best fitting procedure.

Light-Intensity Dependence In The Kinetics Of N-Gap Photoelectrode Stabilization

2010 ◽  
Vol 89 (3) ◽  
pp. 181-186 ◽  
Author(s):  
F. van Overmeire ◽  
F. Vanden Kerchove ◽  
W. P. Gomes ◽  
F. Cardon
Keyword(s):  
Light Intensity ◽  
Intensity Dependence ◽  
Kinetics Of

The determination of oxidation rates and quantum yields during the photocatalytic oxidation of As(III) over TiO2

2021 ◽  
pp. 113628
Author(s):  
Hany Fathy Heiba ◽  
Jay C. Bullen ◽  
Andreas Kafizas ◽  
Camille Petit ◽  
Stephen J Skinner ◽  
...  
Keyword(s):  
Photocatalytic Oxidation ◽  
Quantum Yields ◽  
Oxidation Rates

Use of Experimental Designs to Establish a Kinetic Law for a Gas Phase Photocatalytic Process

2014 ◽  
Vol 12 (1) ◽  
pp. 113-122 ◽  
Author(s):  
Cécile Raillard ◽  
Audrey Maudhuit ◽  
Valérie Héquet ◽  
Laurence Le Coq ◽  
Jean Sablayrolles ◽  
...  
Keyword(s):  
Light Intensity ◽  
Photocatalytic Degradation ◽  
Gas Phase ◽  
Photocatalytic Oxidation ◽  
Experimental Designs ◽  
Photocatalytic Process ◽  
Air Velocity ◽  
Kinetic Rate ◽  
Initial Concentration ◽  
Designs Of Experiments

Abstract The photocatalytic degradation of three common indoor VOCs – acetone, toluene and heptane – is investigated in a dynamic photocatalytic oxidation loop using Box–Behnken designs of experiments. Thanks to the experimental results and the establishment of a kinetic rate law based on a simplified mechanism, a predictive model for the VOC degradation involving independent factors is developed. The parameters under investigation are initial concentration, light intensity and air velocity through the photocatalytic medium. The obtained model fits properly the experimental curves in the range of concentration, light intensity and air flow studied.

Light-intensity dependence in photocatalytic decomposition of water over K4Nb6O17 catalyst

1994 ◽  
Vol 28 (2-4) ◽  
pp. 417-422 ◽  
Author(s):  
S. Tabata ◽  
H. Ohnishi ◽  
E. Yagasaki ◽  
M. Ippommatsu ◽  
K. Domen
Keyword(s):  
Light Intensity ◽  
Photocatalytic Decomposition ◽  
Intensity Dependence ◽  
Decomposition Of Water
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