An overview of semiconductor photocatalysis

The interest in heterogeneous photocatalysis is intense and increasing, as shown by the number of publications on this theme which regularly appear in this journal, and the fact that over 2000 papers have been published on this topic since 1981. This article is an overview of the field of semiconductor photocatalysis : a brief examination of its roots, achievements and possible future. The semiconductor titanium dioxide (TiO 2 ) features predominantly in past and present work on semiconductor photocatalysis; as a result, in the most of the examples selected in this overview to illustrate various points the semiconductor is TiO 2 .

[1]  A. Maldotti,et al.  Photo-oxidative cyanation of aromatics on semiconductor powder suspensions I: oxidation processes involving radical species , 1990 .

[2]  D. Blake,et al.  Direct mass spectrometric studies of the destruction of hazardous wastes. 2. Gas-phase photocatalytic oxidation of trichloroethylene over titanium oxide: products and mechanisms , 1993 .

[3]  H. Yee,et al.  Photoinitiated polymerization of methyl methacrylate using Q-sized zinc oxide colloids , 1992 .

[4]  R. H. Davies,et al.  Activation energies in semiconductor photocatalysis for water purification: the 4-chlorophenol-TiO2O2 photosystem , 1995 .

[5]  J. R. Darwent,et al.  Photoreduction of methyl orange sensitized by colloidal titanium dioxide , 1984 .

[6]  A. Perret.  L'oxyde de zinc, sensibilisateur photochimique , 1926 .

[7]  Photocatalysis for Environment Problems,et al.  Photocatalysis and environment : trends and applications , 1988 .

[8]  S. Licht,et al.  Efficient photoelectrochemical solar cells from electrolyte modification , 1990, Nature.

[9]  G. C. Miller,et al.  Photocatalytic inactivation of coliform bacteria and viruses in secondary wastewater effluent , 1995 .

[10]  David F. Ollis,et al.  Acetone oxidation in a photocatalytic monolith reactor , 1994 .

[11]  A. Fujishima,et al.  Photokilling of Malignant Cells with Ultrafine TiO2 Powder , 1991 .

[12]  B. Ohtani,et al.  A novel photocatalytic process of amine N-alkylation by platinized semiconductor particles suspended in alcohols , 1986 .

[13]  P. Suppan.  Chemistry and light , 1994 .

[14]  K. Honda,et al.  Photocatalysis through excitation of adsorbates. 1. Highly efficient N-deethylation of rhodamine B adsorbed to cadmium sulfide , 1977 .

[15]  R. Sierka,et al.  Inactivation of Phage MS2 by Iron-Aided Titanium Dioxide Photocatalysis , 1994, Applied and environmental microbiology.

[16]  A. Bard,et al.  Initiation of free radical polymerization by heterogeneous photocatalysis at semiconductor powders , 1979 .

[17]  Michael Grätzel,et al.  Cleavage of Water by Visible‐Light Irradiation of Colloidal CdS Solutions; Inhibition of Photocorrosion by RuO2 , 1981 .

[18]  S. Martin,et al.  Environmental Applications of Semiconductor Photocatalysis , 1995 .

[19]  N. Serpone,et al.  Photocatalysis: Fundamentals and Applications , 1989 .

[20]  M. Grätzel,et al.  A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films , 1991, Nature.

[21]  David F. Ollis,et al.  Photocatalytic degradation of organic water contaminants: Mechanisms involving hydroxyl radical attack , 1990 .

[22]  R. Scrudato,et al.  Solarcatalytic inactivation of Escherichia coli in aqueous solutions using TiO2 as catalyst , 1994 .

[23]  Richard D. Noble,et al.  Kinetics of the Oxidation of Trichloroethylene in Air via Heterogeneous Photocatalysis , 1995 .

[24]  K. Harada,et al.  Photocatalytic deposition of metal ions onto TiO2 powder , 1986 .

[25]  David F. Ollis,et al.  Heterogeneous photocatalytic oxidation of gas-phase organics for air purification: Acetone, 1-butanol, butyraldehyde, formaldehyde, and m-xylene oxidation , 1992 .

[26]  Horst Weller,et al.  Photochemistry of colloidal semiconductors. 20. Surface modification and stability of strong luminescing CdS particles , 1987 .

[27]  J. R. Darwent,et al.  Methyl orange as a probe for photooxidation reactions of colloidal titanium dioxide , 1984 .

[28]  A. Fujishima,et al.  SELECTIVE KILLING OF A SINGLE CANCEROUS T24 CELL WITH TIO2 SEMICONDUCTING MICROELECTRODE UNDER IRRADIATION , 1995 .

[29]  N. Lewis,et al.  Chemical modification of n-GaAs electrodes with Os3+ gives a 15% efficient solar cell , 1987, Nature.

[30]  N. Serpone,et al.  AM1 simulated sunlight photoreduction and elimination of Hg(II) and CH3Hg(II) chloride salts from aqueous suspensions of titanium dioxide , 1987 .

[31]  W. Tumas,et al.  Figures-of-Merit for the Technical Development and Application of Advanced Oxidation Processes , 1996 .

[32]  C. Goodeve,et al.  Photosensitisation by titanium dioxide , 1938 .

[33]  A. Henglein,et al.  Flash photolysis observation of the absorption spectra of trapped positive holes and electrons in colloidal titanium dioxide , 1984 .

[34]  M. Grätzel,et al.  Interfacial electron transfer in colloidal metal and semiconductor dispersions and photodecomposition of water , 1986 .

[35]  David F. Ollis,et al.  Heterogeneous Photocatalytic Oxidation of Trichloroethylene and Toluene Mixtures in Air: Kinetic Promotion and Inhibition, Time-Dependent Catalyst Activity , 1996 .

[36]  A. Nozik,et al.  Nitrogen fixation via photoenhanced reduction on p-GaP electrodes , 1978 .

[37]  R. H. Davies,et al.  Photomineralisation of 4-chlorophenol sensitised by titanium dioxide: a study of the intermediates , 1993 .

[38]  C. Kutal,et al.  Valence isomerization of quadricyclene mediated by illuminated semiconductor powders , 1987 .

[39]  Allen J. Bard,et al.  Heterogeneous photocatalytic oxidation of cyanide ion in aqueous solutions at titanium dioxide powder , 2002 .

[40]  P. Pichat,et al.  Photochemical reduction of gold(III) on semiconductor dispersions of TiO2 in the presence of CN− ions: disposal of CN− by treatment with hydrogen peroxide , 1987 .

[41]  V. Ramakrishnan,et al.  Photosensitized reactions of toluidines on zinc oxide , 1981 .

[42]  H. Arakawa,et al.  Significant effect of carbonate addition on stoichiometric photodecomposition of liquid water into hydrogen and oxygen from platinum–titanium(IV) oxide suspension , 1992 .

[43]  G. Pattenden,et al.  Photo-oxidation of alcohols catalysed by platinised titanium dioxide , 1984 .

[44]  P. Pichat,et al.  Standardization protocol of process efficiencies and activation parameters in heterogeneous photocatalysis : relative photonic efficiencies ζr , 1996 .

[45]  A. Heller,et al.  Combined Ruthenium Lead Surface Treatment of Gallium Arsenide Photoanodes , 1980 .

[46]  A. Henglein,et al.  Small-particle research: physicochemical properties of extremely small colloidal metal and semiconductor particles , 1989 .

[47]  P. Kamat,et al.  Photoelectrochemistry in particulate systems. 11. Reduction of phenosafranin dye in colloidal titanium dioxide and cadmium sulfide suspensions , 1989 .

[48]  Glen A. Russell,et al.  Deuterium-isotope Effects in the Autoxidation of Aralkyl Hydrocarbons. Mechanism of the Interaction of PEroxy Radicals1 , 1957 .

[49]  P. Fletcher,et al.  Interfacial electron transfer in titanium dioxide colloids , 1985 .

[50]  T. Nakajima,et al.  Photoelectrochemical sterilization of microbial cells by semiconductor powders , 1985 .

[51]  P. Pichat,et al.  Investigation of the mechanism of photocatalytic alcohol dehydrogenation over Pt/TiO2 using poisons and labelled ethanol , 1987 .

[52]  Mohammad Khaja Nazeeruddin,et al.  Conversion of light to electricity by cis-X2bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) charge-transfer sensitizers (X = Cl-, Br-, I-, CN-, and SCN-) on nanocrystalline titanium dioxide electrodes , 1993 .

[53]  A. Davis,et al.  Photocatalytic oxidation in aqueous titanium dioxide suspensions: the influence of dissolved transition metals , 1993 .

[54]  Frank R. Hartley,et al.  Chemistry of the platinum group metals : recent developments , 1991 .

[55]  Dynamics of light-induced water cleavage in colloidal systems , 1981 .

[56]  Iis Sopyan,et al.  An efficient TiO2 thin-film photocatalyst: photocatalytic properties in gas-phase acetaldehyde degradation , 1996 .

[57]  J. Marx.  Spread of AIDS sparks new health concern. , 1983, Science.

[58]  A. Fujishima,et al.  Increment of photocatalytic killing of cancer cells using TiO2 with the aid of superoxide dismutase , 1992 .

[59]  A. Mills,et al.  Photosensitised dissociation of water using dispersed suspensions of n-type semiconductors , 1982 .

[60]  M. Graetzel,et al.  Methane oxidation at room temperature and atmospheric pressure activated by light via polytungstate dispersed on titania , 1989 .

[61]  R A Kerr,et al.  Origin of life: new ingredients suggested. , 1980, Science.

[62]  A. Henglein,et al.  Photochemistry of colloidal semiconductors. Onset of light absorption as a function of size of extremely small CdS particles , 1986 .

[63]  G. Raupp,et al.  Fluidized-bed photocatalytic oxidation of trichloroethylene in contaminated air streams , 1992 .

[64]  P. Kennepohl,et al.  On the usage of turnover numbers and quantum yields in heterogeneous photocatalysis , 1993 .

[65]  Jincai Zhao,et al.  Heterogeneous photocatalytic degradation of cyanide on TiO2 surfaces , 1992 .

[66]  M. Fox,et al.  Photocatalytic oxidation of multifunctional organic molecules. The effect of an intramolecular aryl thioether group on the semiconductor-mediated oxidation/dehydrogenation of a primary aliphatic alcohol , 1990 .

[67]  David F. Ollis,et al.  Photoassisted heterogeneous catalysis: the degradation of trichloroethylene in water , 1983 .

[68]  M. Anderson,et al.  Photocatalytic degradation of trichloroethylene in the gas phase using titanium dioxide pellets , 1993 .

[69]  M. Fox,et al.  Titanium dioxide photosensitized reactions studied by diffuse reflectance flash photolysis in aqueous suspensions of TiO sub 2 powder , 1990 .

[70]  W. S. Millman,et al.  Studies of the hydrogen held by solids: XXII. The surface chemistry of reduced molybdenaalumina catalysts , 1979 .

[71]  P. Kamat.  PHOTOCHEMISTRY ON NONREACTIVE AND REACTIVE (SEMICONDUCTOR) SURFACES , 1993 .

[72]  T. Saito,et al.  Mode of photocatalytic bactericidal action of powdered semiconductor TiO2 on mutans streptococci. , 1992, Journal of photochemistry and photobiology. B, Biology.

[73]  J. Davies,et al.  An investigation of the putative photosynthesis of ammonia on iron-doped titania and other metal oxides , 1995 .

[74]  C. Turchi,et al.  Comment. Photocatalytic reactor design: an example of mass-transfer limitations with an immobilized catalyst , 1988 .

[75]  A. Mills,et al.  Photo-oxidation of water sensitized by WO3 powder , 1982 .

[76]  M. Primet,et al.  Surface and bulk reactions of carbon tetrachloride with titanium dioxide , 1970 .

[77]  J. Herrmann,et al.  Heterogeneous photocatalysis : an emerging technology for water treatment , 1993 .

[78]  A. Fujishima,et al.  Induction of cytotoxicity by photoexcited TiO2 particles. , 1992, Cancer research.

[79]  J. Moser,et al.  Light-induced electron transfer in colloidal semiconductor dispersions: single vs. dielectronic reduction of acceptors by conduction-band electrons , 1983 .

[80]  Allen J. Bard,et al.  Heterogeneous photocatalytic oxidation of cyanide and sulfite in aqueous solutions at semiconductor powders , 1977 .

[81]  M. G. Hutchings,et al.  Acid enhancement effect in the clean oxidation of toluenes photocatalysed by TiO2 , 1995 .

[82]  A. Fujishima,et al.  Highly Efficient TiO2 Film Photocatalyst. Degradation of Gaseous Acetaldehyde , 1994 .

[83]  J. Herrmann,et al.  Heterogeneous photocatalysis: In situ photoconductivity study of TiO2 during oxidation of isobutane into acetone , 1979 .

[84]  H. Yoneyama,et al.  Photocatalytic Degradation of Gaseous Pyridine over Zeolite-Supported Titanium Dioxide , 1994 .

[85]  R. Noble,et al.  Products, Intermediates, Mass Balances, and Reaction Pathways for the Oxidation of Trichloroethylene in Air via Heterogeneous Photocatalysis. , 1994, Environmental science & technology.

[86]  M. Gratzel.  Heterogeneous photochemical electron transfer , 1988 .

[87]  G. Low,et al.  Effects of common inorganic anions on rates of photocatalytic oxidation of organic carbon over illuminated titanium dioxide , 1990 .

[88]  B. K. Hodnett.  Photocatalytic purification and treatment of water and air : by D.F. Ollis and H. Al-Ekabi (Editors), Elsevier Science Publishers BV, Amsterdam, 1993, ISBN 0-444-89855-7, xiv + 820 pp., f450.00/$257.25 , 1994 .

[89]  J. Casado,et al.  Heterogeneous photocatalytic oxidation of manganese(II) over TiO2 , 1992 .

[90]  A. Heller.  Chemistry and Applications of Photocatalytic Oxidation of Thin Organic Films , 1996 .

[91]  T. Kawai,et al.  Conversion of carbohydrate into hydrogen fuel by a photocatalytic process , 1980, Nature.

[92]  L. Lanzerotti,et al.  Oscillations of the Sun and the geomagnetic field , 1978, Nature.

[93]  J. Herrmann,et al.  Photocatalytic deposition of silver on powder titania: Consequences for the recovery of silver , 1988 .

[94]  Adam Heller,et al.  Role of the oxygen molecule and of the photogenerated electron in TiO2- photocatalyzed air oxidation reactions , 1995 .

[95]  M. Fox.  Organic heterogeneous photocatalysis: chemical conversions sensitized by irradiated semiconductors , 1983 .

[96]  R. Davidson,et al.  The Titanium Dioxide Sensitised Photo-Oxidation of Sulphides , 1983 .

[97]  Gary Hodes,et al.  A thin-film polycrystalline photoelectrochemical cell with 8% solar conversion efficiency , 1980, Nature.

[98]  M. Graetzel,et al.  Energy Resources through Photochemistry and Catalysis , 1983 .

[99]  N. Jaffrezic‐Renault,et al.  Kinetics and mechanism of platinum deposition by photoelectrolysis in illuminated suspensions of semiconducting titanium dioxide , 1985 .

[100]  R. Clark,et al.  Inactivation of Escherichia coli by titanium dioxide photocatalytic oxidation , 1993, Applied and environmental microbiology.

[101]  A. Heller,et al.  The role of oxygen in photooxidation of organic molecules on semiconductor particles , 1991 .

[102]  S. Licht.  Electrolyte modified photoelectrochemical solar cells , 1995 .

[103]  S. Lahiry,et al.  Use of semiconductor materials as sensitizers in a photochemical energy storage reaction, norbornadiene to quadricyclane , 1986 .

[104]  Wrighton.  Photoelectrochemical conversion of optical energy to electricity and fuels. Interim technical report , 1979 .

[105]  A. Nozik,et al.  Photoelectrolysis of water using semiconducting TiO2 crystals , 1975, Nature.

[106]  B. Claudel,et al.  On the “immobilization” of titanium dioxide in the photocatalytic oxidation of spent waters , 1995 .

[107]  John L. Falconer,et al.  Transient Studies of 2-Propanol Photocatalytic Oxidation on Titania , 1995 .

[108]  R. W. Matthews.  Photocatalytic oxidation of chlorobenzene in aqueous suspensions of titanium dioxide , 1986 .

[109]  M. Fox,et al.  Titanium dioxide photooxidation of thiocyanate: (SCN)2.cntdot.- studied by diffuse reflectance flash photolysis , 1990 .

[110]  A. Heller,et al.  11.5% solar conversion efficiency in the photocathodically protected p‐InP/V3+‐V2+‐HCI/C semiconductor liquid junction cell , 1981 .

[111]  M. Okochi,et al.  TiO2-Mediated Photochemical Disinfection of Escherichia coli Using Optical Fibers. , 1995, Environmental science & technology.

[112]  A. Bard,et al.  Heterogeneous photosynthetic production of amino acids at platinum/titanium dioxide suspensions by near ultraviolet light , 1982 .

[113]  C. Minero,et al.  Light-induced reduction of rhodium(III) and palladium(II) on titanium dioxide dispersions and the selective photochemical separation and recovery of gold(III), platinum(IV), and rhodium(III) in chloride media , 1986 .

[114]  Bruce A. Parkinson,et al.  On the efficiency and stability of photoelectrochemical devices , 1984 .

[115]  A. J. McEvoy,et al.  Sensitisation in photochemistry and photovoltaics , 1994 .

[116]  Michael R. Hoffmann,et al.  Q-sized cadmium sulfide: synthesis, characterization, and efficiency of photoinitiation of polymerization of several vinylic monomers , 1992 .

[117]  Andrew Mills,et al.  Photocatalytic degration of 4-chlorophenol mediated by TiO2: a comparative study of the activity of laboratory made and commercial TiO2 samples , 1994 .

[118]  J. Yates,et al.  Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results , 1995 .

[119]  A. Heller,et al.  PHOTOCATALYTIC OXIDATION OF BENZENE AND STEARIC ACID ON SOL-GEL DERIVED TIO2 THIN FILMS ATTACHED TO GLASS , 1996 .

[120]  A. Henglein,et al.  Photochemistry of semiconductor colloids. 22. Electron ejection from illuminated cadmium sulfide into attached titanium and zinc oxide particles , 1987 .

[121]  S. Kuwabata,et al.  Effect of Inert Supports for Titanium Dioxide Loading on Enhancement of Photodecomposition Rate of Gaseous Propionaldehyde , 1995 .

[122]  D. Ollis,et al.  Heterogenous photocatalytic oxidation of dilute toluene-chlorocarbon mixtures in air , 1995 .

[123]  W. Brattain,et al.  Experiments on the interface between germanium and an electrolyte , 1955 .

[124]  D. Ollis,et al.  Heterogeneous photocatalysis: Degradation of dilute solutions of dichloromethane (CH2Cl2), chloroform (CHCl3), and carbon tetrachloride (CCl4) with illuminated TiO2 photocatalyst , 1983 .

[125]  I︠u︡. V. Pleskov.  Solar Energy Conversion , 1990 .

[126]  Andrew Mills,et al.  WATER-PURIFICATION BY SEMICONDUCTOR PHOTOCATALYSIS , 1993 .

[127]  P. Kamat.  Photoelectrochemistry in colloidal systems. Part 2.—A photogalvanic cell based on TiO2 semiconductor colloid , 1985 .

[128]  M. Fox,et al.  Mechanistic features of the semiconductor photocatalyzed olefin-to-carbonyl oxidative cleavage , 1981 .

[129]  A. Heller,et al.  Attachment of TiO2 Powders to Hollow Glass Microbeads: Activity of the TiO2 ‐ Coated Beads in the Photoassisted Oxidation of Ethanol to Acetaldehyde , 1991 .

[130]  David L. Morse,et al.  Strontium titanate photoelectrodes. Efficient photoassisted electrolysis of water at zero applied potential , 1976 .

[131]  Z. Zainal,et al.  Bactericidal Activity of TiO2 Photocatalyst in Aqueous Media: Toward a Solar-Assisted Water Disinfection System. , 1994, Environmental science & technology.

[132]  A. Trifunac,et al.  2B2: The ground state of the hexamethyl(Dewar benzene) radical cation. Time-resolved fluorescence detected magnetic resonance , 1990 .

[133]  T. Ibusuki,et al.  Toluene oxidation on u.v.-irradiated titanium dioxide with and without O2, NO2 OR H2O at ambient temperature , 1986 .

[134]  L. Palmisano,et al.  An experimental method for the determination of the photon flow reflected and absorbed by aqueous dispersions containing polycrystalline solids in heterogeneous photocatalysis , 1991 .

[135]  M. Wainwright.  Non-porphyrin photosensitizers in biomedicine , 1997 .

[136]  T. Matsunaga,et al.  Continuous-sterilization system that uses photosemiconductor powders , 1988, Applied and environmental microbiology.

[137]  G. S. Calabrese,et al.  Photoelectrochemical oxidation of sulfur dioxide in strong acid solution: iodide-mediated oxidation at illuminated metal dichalcogenide electrodes , 1981 .

[138]  A. Fujishima,et al.  Electrochemical Photolysis of Water at a Semiconductor Electrode , 1972, Nature.

[139]  J. Ramsden,et al.  Dynamics of interfacial electron-transfer processes in colloidal semiconductor systems , 1982 .

[140]  R. Bhardwaj,et al.  Photocatalytic H2 and O2 generation from water using a CdS dispersion loaded with Pt, Ir, or Rh and RuO2. Use of [{Ru(OH)(edta)}2(O2)] as an electron relay (H4edta = ethylenediaminetetra-acetic acid) , 1985 .

[141]  L. Palmisano,et al.  Photocatalytic degradaton of phenol in aqueous polycrystalline TiO2 dispersions: the influence of Fe3+, Fe2+ and Ag+ on the reaction rate , 1991 .

[142]  D. Ollis,et al.  Catalyst Deactivation in Gas–Solid Photocatalysis , 1996 .

[143]  W. Jost,et al.  Physical Chemistry, An Advanced Treatise , 1974 .

[144]  The problem of light-induced oxygen production at catalyst-loaded CdS suspensions , 1987 .

[145]  B. Delmon,et al.  PREPARATION OF CATALYSTS IV , 1987 .

[146]  V. Augugliaro,et al.  Concerning “An Opinion on the Heterogeneous Photoreduction of N2 with H2O”: First Letter , 1993 .

[147]  G. Schrauzer,et al.  Photolysis of water and photoreduction of nitrogen on titanium dioxide , 1977 .

[148]  Detlef W. Bahnemann,et al.  Preparation and characterization of quantum-size titanium dioxide , 1988 .

[149]  Akira Fujishima,et al.  PREPARATION OF TRANSPARENT TIO2 THIN FILM PHOTOCATALYST AND ITS PHOTOCATALYTIC ACTIVITY , 1995 .

[150]  C. Minero,et al.  The role of colloidal particles in the photodegradation of organic compounds of environmental concern in aquatic systems , 1990 .

[151]  A. Mills,et al.  PHOTOMINERALIZATION OF 4-CHLOROPHENOL SENSITIZED BY TITANIUM-DIOXIDE - A STUDY OF THE INITIAL KINETICS OF CARBON-DIOXIDE PHOTOGENERATION , 1993 .

[152]  A. Fujishima,et al.  Intracellular Ca2+ concentration change of T24 cell under irradiation in the presence of TiO2 ultrafine particles. , 1994, Biochimica et biophysica acta.

[153]  B. Parkinson,et al.  Further studies of the photoelectrochemical properties of the group VI transition metal dichalcogenides , 1982 .

[154]  Gabor A. Somorjai,et al.  The photoassisted reaction of gaseous water and carbon dioxide adsorbed on the SrTiO3 (111) crystal face to form methane , 1978 .

[155]  Anders Hagfeldt,et al.  Light-Induced Redox Reactions in Nanocrystalline Systems , 1995 .

[156]  M. Formenti,et al.  Photointeraction on the surface of titanium dioxide between oxygen and alkanes , 1974 .

[157]  N. Lewis,et al.  Flux-Matching Conditions at TiO2 Photoelectrodes: Is Interfacial Electron Transfer to O2 Rate-Limiting in the TiO2-Catalyzed Photochemical Degradation of Organics? , 1994 .

[158]  Raymond Bonnett,et al.  Photosensitizers of the porphyrin and phthalocyanine series for photodynamic therapy , 1995 .

[159]  G. Griffin,et al.  Selectivity control during the photoassisted oxidation of 1-butanol on titanium dioxide , 1988 .

[160]  A. Mills,et al.  Bromate removal from drinking water by semiconductor photocatalysis , 1996 .

[161]  S. McEvoy,et al.  A comparison of 254 nm and 350 nm excitation of TiO2 in simple photocatalytic reactors , 1992 .

[162]  Yasunori Yamamoto,et al.  Kinetics of Heterogeneous Photocatalytic Decomposition of Phenol over Anatase TiO2 Powder , 1985 .

[163]  G. Raupp,et al.  Photocatalytic oxidation of oxygenated air toxics , 1993 .

[164]  Y. Pleskov,et al.  THE ELECTROCHEMISTRY OF SEMICONDUCTORS , 1963 .

[165]  A. Bard,et al.  Heterogeneous photocatalytic synthesis of methane from acetic acid: new Kolbe reaction pathway , 1978 .

[166]  A. Bard,et al.  Heterogeneous Photosynthetic Production of Amino Acids at Pt/TiO2 Suspensions by Near Ultraviolet Light , 1981 .

[167]  Y. Oosawa.  PHOTOCATALYTIC OXYGEN EVOLUTION FROM TiO2 POWDER-WATER-HALATE SYSTEMS , 1982 .