The photocatalytic features of doped with ferric oxides or mixed with activated carbon are compared with those of the unmodified Degussa P-25 . These new catalysts show specific structural features that alter catechol and resorcinol photodegradabilities, according to their chemical structures. For instance, we have observed that Fe oxides located on the particle surface hamper these dihydroxybenzenes degradation. Likewise, catalysts have shown improved catechol photodegradability with respect to that of , while that of resorcinol is not altered. These studies show that catechol and resorcinol adsorption patterns are different, i.e., they have different adsorption centres on the catalyst surface and are differently affected by photonic flux variations.
Issue Section:
Research Papers
1.
Nae-Lih
, W.
, and Min-Shuei
, L.
, 2004, “Enhanced TiO2 Photocatalysis by Cu in Hydrogen Production From Aqueous Methanol Solution
” Int. J. Hydrogen Energy
0360-3199, 29
, 1601
–1605
.2.
Araña
, J.
, Doña-Rodríguez
, J. M.
, González-Díaz
, O.
, Tello Rendón
, E.
, Herrera Melián
, J. A.
, Colón
, G.
, Navío
, J. A.
, and Pérez Peña
, J.
, 2004, “Gas-Phase Ethanol Photocatalytic Degradation Study With TiO2 Doped with Fe, Pd and Cu
,” J. Mol. Catal. A: Chem.
1381-1169, 215
, pp 153
–160
.3.
Chiang
, K.
, Amal
, R.
, and Tran
, T.
, 2002, ” Photocatalytic Degradation of Cyanide Using Titanium Dioxide Modified With Copper Oxide
,” Adv. Environ. Res.
1093-0191, 6
, pp. 471
–485
.4.
Pal
, B.
, Hata
, T.
, Goto
, K.
, and Nogami
, G.
, 2001, “Photocatalytic Degradation of o-Cresol Sensitized by Iron-Titania Binary Photocatalysts
,” J. Mol. Catal. A: Chem.
1381-1169, 169
, pp 147
–155
.5.
Araña
, J.
, González Díaz
, O.
, Doña Rodríguez
, J. M.
, Herrera Melián
, J. A.
, Garriga i Cabo
, C.
, Pérez Peña
, J.
, Carmen Hidalgo
, M.
, and Navío-Santos
, J. A.
, , 2003, “Role of Fe3+∕Fe2+ as TiO2 Dopant Ions in Photocatalytic Degradation of Carboxylic Acids
,” J. Mol. Catal. A: Chem.
1381-1169, 197
, pp 157
–171
.6.
Araña
, J.
, González Díaz
, O.
, Miranda Saracho
, M.
, Doña Rodríguez
, J. M.
, Herrera Melián
, J. A.
, and Pérez Peña
, J.
, 2002, “Maleic Acid Photocatalytic Degradation Using Fe-TiO2 Catalysts: Dependence of the Degradation Mechanism on the Fe Catalysts Content
,” Appl. Catal., B
0926-3373, 36
, pp 113
–124
.7.
Araña
, J.
, González Díaz
, O.
, Miranda Saracho
, M.
, Doña Rodríguez
, J. M.
, Herrera Melián
, J. A.
, and Pérez Peña
, J.
, 2001, “Photocatalytic Degradation of Formic Acid Using Fe∕TiO2 Catalysts: The Role of Fe3+∕Fe2+ Ions in the Degradation Mechanism
,” Appl. Catal., B
0926-3373, 32
, pp 49
–61
.8.
Piera
, E.
, Isabel Tejedor-Tejedor
, M.
, Zorn
, M. E.
, and Anderson
, M. A.
, 2003, “Relationship Concerning the Nature and Concentration of Fe(III) Species on the Surface of TiO2 Particles and Photocatalytic Activity of the Catalyst
,” Appl. Catal., B
0926-3373, 46
, pp. 671
–685
.9.
Ao
, C. H.
, and Lee
, S. C.
, 2005, “Indoor Air Purification by Photocatalyst TiO2 Immobilized on an Activated Carbon Filter Installed in an Air Cleaner
,” Chem. Eng. Sci.
0009-2509, 60
, pp 103
–109
.10.
El-Sheikh
, A. H.
, Newman
, A. P.
, Al-Daffaee
, H.
, Phull
, S.
, Cresswell
, N.
, and York
, S.
, 2004, “Deposition of Anatase on the Surface of Activated Carbon Surface and Coatings
,” Technology
, 187
, pp. 284
–292
.11.
Parra
, S.
, Elena Stanca
, S.
, Guasaquillo
, I.
, and Ravindranathan Thampi
, K.
, 2004, “Photocatalytic Degradation of Atrazine Using Suspended and Supported TiO2
,” Appl. Catal., B
0926-3373, 51
, pp. 107
–116
.12.
Qourzal
, S.
, Assabbane
, A.
, and Ait-Ichou
, Y.
, 2004, “Synthesis of TiO2 Via Hydrolysis of Titanium Tetraisopropoxide and its Photocatalytic Activity on a Suspended Mixture With Activated Carbon in the Degradation of 2-Naphthol
,” J. Photochem. Photobiol., A
1010-6030, 163
, pp. 317
–321
.13.
Ao
, C. H.
, and Lee
, S. C.
, 2004, “Combination Effect of Activated Carbon with TiO2 For the Photodegradation of Binary Pollutants at Typical Indoor Air Level
,” J. Photochem. Photobiol., A
1010-6030, 161
, pp. 131
–140
.14.
Ying
, Y.
, Jimmy
, C. Yu
, C-Y.
, Chan
, Cho-Yin
, C.
, J-C.
, Zhao
, Ding
, L.
, Wei-Kun
, G.
, and Po-Keung
, W.
, 2005, “Enhancement of Adsorption and Photocatalytic Activity of TiO2 By Using Carbon Nanotubes For the Treatment of Azo Dye
,” Appl. Catal., B
0926-3373, in press.15.
Carpio
, Ed.
, Zúñiga
, P.
, Ponce
, S.
, Solis
, J.
, Rodriguez
, J.
, and Estra
, W.
, 2005, “Photocatalytic Degradation of Phenol using TiO2 Nanocrystals Supported on Activated Carbon
,” J. Mol. Catal. A: Chem.
1381-1169, 228
, pp. 293
–298
.16.
Araña
, J.
, Doña-Rodríguez
, J. M.
, Tello Rendón
, E.
, Garriga i Cabo
, C.
, González-Díaz
, O.
, Herrera-Melián
, J. A.
, Pérez-Peña
, J.
, Colón
, G.
, and Navío
, J. A.
, 2003, “TiO2 Activation By Using Activated carbon as a Support: Part Surface Characterisation and Decantability Study
,” Appl. Catal., B
0926-3373, 44
, pp. 161
–172
.17.
Rincón
, A. G.
, Pulgarin
, C.
, Adler
, N.
and Peringer
, P.
, 2001, “Interaction Between E. Coli Inactivation and DBP-Precursors—Dihydroxybenzene Isomers—In the Photocatalytic Process of Drinking-Water Disinfection With TiO2
,” J. Photochem. Photobiol., A
1010-6030, 139
, pp. 233
–241
.18.
Bickley
, R. I.
, Lees
, J. S.
, Tilley
, R. J. D.
, Palmisano
, L.
, and Schiavello
, M.
, 1992, “Characterisation of Iron/Titanium Oxide Photocatalysts. Part 1—Structural and Magnetic Studies
,” J. Chem. Soc., Faraday Trans.
0956-5000, 88
, pp. 377
–384
.19.
Kuhn
, H. J.
, Braslavsky
, S. E.
, and Schemidt
, R.
, 2004, “Chemical Actinometry
,” Pure Appl. Chem.
0033-4545, 76
, pp. 2105
–2146
.20.
Sakkas
, V. A.
, Arabatzis
, I. M.
, Konstantinou
, I. K.
, Dimou
, A. D.
, Albanis
, T. A.
, and Falaras
, P.
, 2004, “Metolachlor Photocatalytic Degradation using Tio2 Photocatalysis
,” Appl. Catal., B
0926-3373, 49
, pp. 195
–205
.21.
Parra
, S.
, Stanca
, S. E.
, Guasaquillo
, I.
, and Tampi
, K. R.
, 2004,”Photocatalytic Degradation of Atrazine Using Suspended and Supported TiO2
,” Appl. Catal., B
0926-3373, 51
, pp. 107
–116
.22.
Inel
, Y.
, and Neren Ökte
, A.
, 1996 “Photocatalytic Degradation of Malonic Acid in Aqueous Suspensions of Titanium Dioxide: An Initial Kinetic Investigation of CO2 Photogeneration
,” J. Photochem. Photobiol., A
1010-6030, 96
, pp. 175
–180
.23.
Arslan
, I.
, Balcioglu
, I.
, and Bahnemann
, D. W.
, 2000, “Heterogeneous Photocatalytic Treatment of Simulated Dyehouse Effluents Using Novel TiO2-Photocatalysts
,” Appl. Catal., B
0926-3373, 26
, pp. 193
–206
.24.
Salinaro
, A.
, Emeline
, A. V.
, Zhao
, J.
, Hidaka
, H.
, Ryabchuk
, V. K.
, and Serpone
, N.
, 1999, “Terminology, Relative Photonic Efficiencies and Quantum Yields in Heterogeneous Photocatalysis. Part II: Experimental Detemination of Quantum Yields
,” Pure Appl. Chem.
0033-4545, 7
, pp. 321
–335
.25.
Wang
, C.
, Rabani
, J.
, Bahnemann
, D.
, and Dohrmann
, J.
, 2002, “Photonic Efficiency and Quantum Yield of Formaldehyde Formation from Methanol in the Presence of Various TiO2 Photocatalysts
,” J. Photochem. Photobiol., A
1010-6030, 148
, pp. 169
–176
.26.
Wang
, C.
, Bahneman
, D. W.
, and Dohrmann
, J. K.
, 2001, “Determination of Photonic Efficiency and Quantum Yield of Formaldehyde Formation in the Presence of Various TiO2 Photocatalysts
,” Water Sci. Technol.
0273-1223, 44
, pp. 278
–286
.27.
Ökte
, A N.
, Resat
, M. S.
, and Inel
, Y.
, 2000, “Quantum Yields and Relative Photonic Efficiencies of Substituted 1,3-Dihydroxybenzenes
,” J. Photochem. Photobiol., A
1010-6030, 134
, pp. 59
–70
.28.
Hirakawa
, T.
, and Nosaka
, Y.
, 2002, “Properties of O2∙− and OH∙ Formed in TiO2 Aqueous Suspensions by Photocatalytic Reaction and the Influence of H2O2 and Some Ions
,” Langmuir
0743-746318
, pp. 3247
–3254
.29.
Jenny
, B.
, and Pichat
, P.
, 1991, “Determination of the Actual Photocatalytic Rate of Hydrogen Peroxide Decomposition Over Suspended Titania. Fitting to the Langmuir-Hinshelwood Form
,” Langmuir
0743-7463, 7
, pp. 947
–954
.30.
Dionysiou
, D. D.
, Suidan
, M. T.
, Baudin
, I
, and Laîne
, J-M.
, 2004 “Effect of Hydrogen Peroxide on the Destruction of Organic Contaminants-Synergism and Inhibition in a Continuous-Mode Photocatalytic Reactor
,” Appl. Catal., B
0926-3373, 50
, pp. 259
–269
.31.
Araña
, J.
, Fernández Rodríguez
, C.
, Doña-Rodríguez
, J. M.
, González-Díaz
, O.
, Herrera-Melián
, J. A.
, and Pérez-Peña
, J.
, 2005, “Role of Cu in the Cu-TiO2 Photocatalytic Degradation of Dihydroxybenzenes
,” Catal. Today
0920-5861, 101
, pp. 261
–266
.32.
Colthup
, N. B.
, Daly
, L. H.
, and Wiberley
, S. E.
, 1973, Introduction to Infrared and Raman Spectroscopy
, Academic
, New York
.33.
Ao
, C. H.
, and Lee
, S. C.
, 2003, “Enhancement Effect of TiO2 Immobilized on Activated Carbon Filter For the Photodegradation of Pollutants at Typical Indoor Air Level
,” Appl. Catal., B
0926-3373, 44
, pp. 191
–205
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