Photocatalytic degradation of pesticide contaminants in water

Photocatalysis has been proved to be an effective and inexpensive tool for the removal of organic and inorganic pollutants from water. Of particular interest in this context, in recent years, has been the complete photocatalytic mineralisation of a variety of pesticides into harmless products. The technique is now reaching the pre-industrial level, with several pilot plants and prototypes being operational in various countries. This paper reviews the major developments in the area, with special reference to the mechanism of the process involved, nature of the reactive intermediates and final products.

[1]  Alberto E. Cassano,et al.  Evaluation of Radiation Absorption in Slurry Photocatalytic Reactors. 1. Assessment of Methods in Use and New Proposal , 2000 .

[2]  N. Durán,et al.  ZnO-catalysed photodegradation of kraft black liquor , 1994 .

[3]  L. Feigelson,et al.  Solar photocatalytic mineralization of pesticides in polluted waters , 1995 .

[4]  M. Sturini,et al.  Titanium dioxide-photocatalysed decomposition of some thiocarbamates in water , 1996 .

[5]  M. Vincenti,et al.  Photocatalytic degradation of Monuron in aqueous titanium dioxide dispersions , 1993 .

[6]  P. Pichat,et al.  Photocatalytic destruction of hazardous chlorine‐ or nitrogen‐containing aromatics in water , 1993 .

[7]  A. Bard,et al.  Photochemistry of colloidal semiconducting iron oxide polymorphs , 1987 .

[8]  N. Gondrexon,et al.  Sonochemical Degradation of Phenol in Dilute Aqueous Solutions: Comparison of the Reaction Rates at 20 and 487 kHz , 1994 .

[9]  K. Tanaka,et al.  Photodegradation of phenoxyacetic acid and carbamate pesticides on TiO2 , 2002 .

[10]  R. Hollingsworth,et al.  Organophosphorous Pesticides: Organic and Biological Chemistry , 1975 .

[11]  L. Palmisano,et al.  Photocatalytic degradation of 4-nitrophenol in aqueous suspension by using polycrystalline TiO2 impregnated with functionalized Cu(II)-porphyrin or Cu(II)-phthalocyanine , 2003 .

[12]  Richard A. Larson,et al.  Reaction Mechanisms in Environmental Organic Chemistry , 1994 .

[13]  Jimmy C. Yu,et al.  An investigation on photocatalytic activities of mixed TiO2-rare earth oxides for the oxidation of acetone in air , 1998 .

[14]  J. Giménez,et al.  Photocatalytic treatment of phenol and 2,4-dichlorophenol in a solar plant in the way to scaling-up , 1999 .

[15]  S. Saltzman,et al.  Identification of sensitized photooxidation products of s-triazine herbicides in water , 1983 .

[16]  I. Willner,et al.  Lanthanide oxide-doped titanium dioxide photocatalysts: novel photocatalysts for the enhanced degradation of p-chlorophenoxyacetic acid. , 2001, Environmental science & technology.

[17]  B. Viswanathan,et al.  Synthesis, characterization and photocatalytic properties of iron-doped TiO2 catalysts , 1997 .

[18]  A. Kettrup,et al.  Photosensitized degradation of terbuthylazine in water , 1996 .

[19]  P. Harvey,et al.  Photocatalytic oxidation of liquid propan-2-ol by titanium dioxide , 1983 .

[20]  P. Jaffé,et al.  Sorption of Phenanthrene from Water onto Alumina Coated with Dianionic Surfactants , 1996 .

[21]  Morifusa Eto,et al.  Organophosphorus pesticides; organic and biological chemistry , 1974 .

[22]  O. M. Kut,et al.  TiO2-Assisted Degradation of Environmentally Relevant Organic Compounds in Wastewater Using a Novel Fluidized Bed Photoreactor , 1996 .

[23]  David F. Ollis,et al.  Mixed reactant photocatalysis: Intermediates and mutual rate inhibition , 1989 .

[24]  T. R. Roberts,et al.  Environmental fate of pesticides. , 1990 .

[25]  M. Grätzel,et al.  Decomposition of organophosphorus compounds on photoactivated TiO2 surfaces , 1990 .

[26]  D. Bahnemann,et al.  Semiconductor-mediated photocatalyzed degradation of two selected pesticide derivatives, terbacil and 2,4,5-tribromoimidazole, in aqueous suspension , 2002 .

[27]  A. Hiskia,et al.  Sonolytic, photolytic, and photocatalytic decomposition of atrazine in the presence of polyoxometalates. , 2001, Environmental science & technology.

[28]  M. Florêncio,et al.  Photodegradation of Diquat and Paraquat in aqueous solutions by titanium dioxide: evolution of degradation reactions and characterisation of intermediates. , 2004, Chemosphere.

[29]  M. I. Maldonado,et al.  Optimization of pre-industrial solar photocatalytic mineralization of commercial pesticides , 2000 .

[30]  Julián Blanco,et al.  Photocatalysis with solar energy at a pilot-plant scale: an overview , 2002 .

[31]  R. W. Matthews.  Solar-electric water purification using photocatalytic oxidation with TiO2 as a stationary phase , 1987 .

[32]  K. Tennakone,et al.  Photocatalytic degradation of organic contaminants in water with TiO2 supported on polythene films , 1995 .

[33]  H. Ichiura,et al.  Preparation and characteristics of high performance paper containing titanium dioxide photocatalyst supported on inorganic fiber matrix. , 2003, Chemosphere.

[34]  R. Doong,et al.  Photocatalytic degradation of parathion in aqueous TIO2 dispersion: the effect of hydrogen peroxide and light intensity , 1998 .

[35]  A. Vidal,et al.  Developments in solar photocatalysis for water purification. , 1998, Chemosphere.

[36]  T. Albanis,et al.  Photocatalyzed degradation of the biocides chlorothalonil and dichlofluanid over aqueous TiO2 suspensions , 2003 .

[37]  A. Fernández-Alba,et al.  Photocatalytic degradation of pesticide–acaricide formetanate in aqueous suspension of TiO2 , 2001 .

[38]  C. Minero,et al.  Phototransformations of nitrogen containing organic compounds over irradiated semiconductor metal oxides: Nitrobenzene and Atrazine over TiO2 and ZnO , 1993 .

[39]  J. P. Percherancier,et al.  Semiconductor-sensitized photodegradation of pesticides in water: the case of carbetamide , 1995 .

[40]  Shahamat U. Khan.  Pesticides in the Soil Environment , 1981 .

[41]  Y. Ku,et al.  Decomposition of monocrotophos in aqueous solution by UV irradiation in the presence of titanium dioxide. , 1998, Chemosphere.

[42]  A. Vidal,et al.  Inactivation of titanium dioxide by sulphur: photocatalytic degradation of Vapam® , 2001 .

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

[44]  M. Grätzel,et al.  EPR study of hydrated anatase under UV irradiation , 1987 .

[45]  Oleg G. Poluektov,et al.  Improving Optical and Charge Separation Properties of Nanocrystalline TiO2 by Surface Modification with Vitamin C , 1999 .

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

[47]  Chuncheng Chen,et al.  Photocatalysis by titanium dioxide and polyoxometalate/TiO2 cocatalysts. Intermediates and mechanistic study. , 2004, Environmental science & technology.

[48]  D. Ollis.  Contaminant degradation in water. , 1985, Environmental science & technology.

[49]  S. Robledo,et al.  Photocatalytic degradation of 3,4-xylyl N-methylcarbamate (MPMC) and other carbamate pesticides in aqueous TiO2 suspensions , 1999 .

[50]  Jorge Laine,et al.  Synergy effect in the photocatalytic degradation of phenol on a suspended mixture of titania and activated carbon , 1998 .

[51]  I. Poulios,et al.  Photocatalytic decomposition of triclopyr over aqueous semiconductor suspensions , 1998 .

[52]  T. Albanis,et al.  Photocatalytic degradation of the herbicides propanil and molinate over aqueous TiO2 suspensions: identification of intermediates and the reaction pathway , 2001 .

[53]  P. Kamat,et al.  Combinative Sonolysis and Photocatalysis for Textile Dye Degradation , 2000 .

[54]  N. Serpone,et al.  Ultrasonic Induced Dehalogenation and Oxidation of 2-, 3-, and 4-Chlorophenol in Air-Equilibrated Aqueous Media. Similarities with Irradiated Semiconductor Particulates , 1994 .

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

[56]  X. Bao,et al.  The enhancement of TiO2 photocatalytic activity by hydrogen thermal treatment. , 2003, Chemosphere.

[57]  M. Zorn,et al.  Catalytic and Photocatalytic Oxidation of Ethylene on Titania-Based Thin-Films , 2000 .

[58]  J. Hupka,et al.  Photocatalytic degradation of lindane, p,p′-DDT and methoxychlor in an aqueous environment , 2000 .

[59]  J. Giménez,et al.  Photocatalytic degradation of phenol: Comparison between pilot-plant-scale and laboratory results , 1996 .

[60]  P. Pichat,et al.  Photodegradation of 2- and 3-chlorophenol in titanium dioxide aqueous suspensions , 1990 .

[61]  J. Blanco,et al.  Solar photocatalytic mineralization of commercial pesticides: acrinathrin. , 2000, Chemosphere.

[62]  J. A. Santaballa,et al.  Reaction pathways and mechanisms of photodegradation of pesticides. , 2002, Journal of photochemistry and photobiology. B, Biology.

[63]  C. Minero,et al.  Photocatalytic degradation of atrazine and other s-triazine herbicides. , 1990 .

[64]  G. Marcì,et al.  Surface characterisation of metal ions loaded TiO2 photocatalysts: structure–activity relationship , 2004 .

[65]  S. Punchihewa,et al.  Surface complexation of colloidal semiconductors strongly enhances interfacial electron-transfer rates , 1991 .

[66]  Ichiro Okura,et al.  Photocatalysis Science and Technology , 2002 .

[67]  T. Rajh,et al.  Surface Modification of TiO2 Nanoparticles For Photochemical Reduction of Nitrobenzene , 2000 .

[68]  S. McEvoy,et al.  Photocatalytic degradation of phenol in the presence of near-UV illuminated titanium dioxide , 1992 .

[69]  J. Laîné,et al.  Continuous-mode photocatalytic degradation of chlorinated phenols and pesticides in water using a bench-scale TiO2 rotating disk reactor , 2000 .

[70]  M. Anpo,et al.  Photocatalytic hydrogenation of propyne with water on small-particle titania: size quantization effects and reaction intermediates , 1987 .

[71]  C. Minero,et al.  Photodegradation of dichlorophenols and trichlorophenols in TiO2 aqueous suspensions: kinetic effects of the positions of the Cl atoms and identification of the intermediates , 1993 .

[72]  Wilson F. Jardim,et al.  Photocatalytic degradation of aromatic chlorinated compounds using TiO2: Toxicity of intermediates , 1997 .

[73]  S. McEvoy,et al.  Formation of nitrate and ammonium ions in titanium dioxide mediated photocatalytic degradation of organic compounds containing nitrogen atoms , 1991 .

[74]  A. Bard,et al.  Spin trapping and electron spin resonance detection of radical intermediates in the photodecomposition of water at titanium dioxide particulate systems , 1979 .

[75]  C. Pirola,et al.  Degradation of organic water pollutants through sonophotocatalysis in the presence of TiO(2). , 2003, Ultrasonics sonochemistry.

[76]  C. Minero,et al.  Role of adsorption in photocatalyzed reactions of organic molecules in aqueous titania suspensions , 1992 .

[77]  A. Hiskia,et al.  Photocatalytic Degradation of Lindane in Aqueous Solution , 1997 .

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

[79]  Fenglin Yang,et al.  Effects of Fe2O3, organic matter and carbonate on photocatalytic degradation of lindane in the sediment from the Liao River, China. , 2003, Chemosphere.

[80]  H. Yoneyama,et al.  Photocatalytic oxidation of cyanide on platinized titanium dioxide , 1980 .

[81]  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 .

[82]  M. Hoffmann,et al.  Photocatalytic degradation of pentachlorophenol on titanium dioxide particles: identification of intermediates and mechanism of reaction , 1993 .

[83]  S. Yesodharan,et al.  Photocatalytic degradation of phosphamidon on semiconductor oxides. , 2003, Journal of hazardous materials.

[84]  H. García,et al.  2,4,6-Triphenylpyrylium ion encapsulated within Y zeolite as photocatalyst for the degradation of methyl parathion , 2000 .

[85]  L. A. Clark,et al.  Effects of reaction temperature and water vapor content on the heterogeneous photocatalytic oxidation of ethylene , 1996 .

[86]  J. Pignatello,et al.  Complete oxidation of metolachlor and methyl parathion in water by the photoassisted Fenton reaction , 1995 .

[87]  A. López,et al.  Prometryne oxidation by sodium hypochlorite in aqueous solution: kinetics and mechanism. , 1995, Environmental science & technology.

[88]  Keiichi Tanaka,et al.  Effect of crystallinity of TiO2 on its photocatalytic action , 1991 .

[89]  J. Herrmann.  WATER TREATMENT BY HETEROGENEOUS PHOTOCATALYSIS , 1999 .

[90]  H. Burrows,et al.  Environmental and laboratory studies of the photodegradation of the pesticide fenarimol , 1994 .

[91]  A. Kettrup,et al.  Photochemical degradation of carboxin and oxycarboxin in the presence of humic substances and soil , 1999 .

[92]  J. Herrmann,et al.  Photocatalytic pollutant removal in water at room temperature: case study of the total degradation of the insecticide fenitrothion (phosphorothioic acid O,O-dimethyl-O-(3-methyl-4-nitro-phenyl) ester) , 1996 .

[93]  M. I. Maldonado,et al.  Solar photocatalytic mineralization of commercial pesticides: Oxamyl , 2000 .

[94]  H. Hah,et al.  Comparison of Ag deposition effects on the photocatalytic activity of nanoparticulate TiO2 under visible and UV light irradiation , 2004 .

[95]  J Rodríguez,et al.  Photocatalytic degradation of cellulose bleaching effluent by supported TiO2 and ZnO. , 2000, Chemosphere.

[96]  A. V. Vorontsov,et al.  Comparative study on photocatalytic oxidation of four organophosphorus simulants of chemical warfare agents in aqueous suspension of titanium dioxide , 2004 .

[97]  Keiichi Tanaka,et al.  Photocatalytic degradation of sulfonated aromatics in aqueous TiO2 suspension , 1995 .

[98]  D. Meisel,et al.  Role of hydroxyl radicals and trapped holes in photocatalysis. A pulse radiolysis study , 1991 .

[99]  H. Yoneyama,et al.  Heterogeneous photocatalytic reduction of dichromate on n-type semiconductor catalysts , 1979, Nature.

[100]  D. Goswami,et al.  Techno-Economic Analysis of Solar Detoxification Systems , 1997 .

[101]  T. Omata,et al.  Photocatalytic behavior of titanium oxide-perovskite type Sr(Zr1−xYx)O3−δ composite particles , 2003 .

[102]  N Durán,et al.  Semiconductor-assisted photocatalytic degradation of reactive dyes in aqueous solution. , 2000, Chemosphere.

[103]  C. Minero,et al.  Photocatalytic degradation of bentazon by TiO2 particles , 1989 .

[104]  Jincai Zhao,et al.  TiO2-assisted photodegradation of dyes: A study of two competitive primary processes in the degradation of RB in an aqueous TiO2 colloidal solution , 1998 .

[105]  H. Einaga,et al.  Improvement of catalyst durability by deposition of Rh on TiO2 in photooxidation of aromatic compounds. , 2004, Environmental science & technology.

[106]  T. Aminabhavi,et al.  Photomicroelectrochemical detoxification of hazardous materials , 1993 .

[107]  Keiichi Tanaka,et al.  Photocatalytic degradation of organophosphorous insecticides in aqueous semiconductor suspensions , 1990 .

[108]  L. A. Clark,et al.  Enhanced Photocatalytic Performance of Titania-Based Binary Metal Oxides: TiO2/SiO2 and TiO2/ZrO2 , 1996 .

[109]  P. Smirniotis,et al.  Sonophotocatalytic destruction of organic contaminants in aqueous systems on TiO2 powders , 2001 .

[110]  A. Prevot,et al.  Photocatalytic degradation of carbaryl in aqueous TiO2 suspensions containing surfactants , 1999 .

[111]  W. Chu,et al.  The photocatalytic degradation of dicamba in TiO2 suspensions with the help of hydrogen peroxide by different near UV irradiations. , 2004, Water research.

[112]  Keiichi Tanaka,et al.  Photocatalytic wastewater treatment combined with ozone pretreatment , 1992 .

[113]  Ruey-an Doong,et al.  Photodegradation of parathion in aqueous titanium dioxide and zero valent iron solutions in the presence of hydrogen peroxide , 1998 .

[114]  B. Ohtani,et al.  Immobilization of highly active titanium(IV) oxide particles: A novel strategy of preparation of transparent photocatalytic coatings , 2001 .

[115]  W. Kuo,et al.  Solar photocatalytic decolorization of methylene blue in water. , 2001, Chemosphere.

[116]  D. Peričin,et al.  Photocatalytic removal of the insecticide fenitrothion from water sensitized with TiO2 , 2003 .

[117]  R. Doong,et al.  Photoassisted titanium dioxide mediated degradation of organophosphorus pesticides by hydrogen peroxide , 1997 .

[118]  M. Anderson,et al.  A Kinetic study of the photocatalytic degradation of 3-Chlorosalicylic acid over TiO2 membranes supported on glass , 1991 .

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

[120]  A. Hiskia,et al.  Photolytic and photocatalytic decomposition of fenitrothion by PW12O403− and TiO2: a comparative study , 2004 .

[121]  André M. Braun,et al.  Photochemical processes for water treatment , 1993 .

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

[123]  H. Muntau,et al.  Photooxidation of prometryn and prometon in aqueous solution by hydrogen peroxide on photocatalytic membranes immobilising titanium dioxide , 1998 .

[124]  T. Albanis,et al.  Photocatalytic degradation of selected s-triazine herbicides and organophosphorus insecticides over aqueous TiO2 suspensions. , 2001, Environmental science & technology.

[125]  B. Ohtani,et al.  Photocatalytic Activity of Amorphous−Anatase Mixture of Titanium(IV) Oxide Particles Suspended in Aqueous Solutions , 1997 .

[126]  D. Meissner,et al.  Photocorrosion by Oxygen Uptake in Aqueous Cadmium Sulphide Suspensions , 1985 .

[127]  A. Fernández-Alba,et al.  Degradation of imidacloprid in water by photo-Fenton and TiO2 photocatalysis at a solar pilot plant: a comparative study. , 2001, Environmental Science and Technology.

[128]  K. Domen,et al.  Preparation of Porous Niobium Oxides by Soft-Chemical Process and Their Photocatalytic Activity , 1997 .

[129]  B. Abramović,et al.  Photocatalytic oxidation of the herbicide (4-chloro-2-methylphenoxy)acetic acid (MCPA) over TiO2 , 2001 .

[130]  R. Doong,et al.  Photoassisted iron compound catalytic degradation of organophosphorous pesticides with hydrogen peroxide , 1998 .

[131]  Pierre Pichat,et al.  TiO2-In2O3 photocatalysts: preparation, characterisations and activity for 2-chlorophenol degradation in water , 2004 .

[132]  M. Vincenti,et al.  Photocatalytic Degradation of Carbaryl in Aqueous Solutions Containing TiO2 Suspensions , 1997 .

[133]  H. Mansilla,et al.  Effect of temperature on kraft black liquor degradation by ZnO-photoassisted catalysis , 1996 .

[134]  A. Bard,et al.  IMPROVED PHOTOCATALYTIC ACTIVITY AND CHARACTERIZATION OF MIXED TIO2/SIO2 AND TIO2/AL2O3 MATERIALS , 1997 .

[135]  T. Albanis,et al.  Photocatalytic transformation of pesticides in aqueous titanium dioxide suspensions using artificial and solar light: intermediates and degradation pathways , 2003 .

[136]  C. Minero,et al.  Degradation pathways of atrazine under solar light and in the presence of TiO2 colloidal particles , 1992 .

[137]  M. Calvo,et al.  Photooxidation of organic mixtures on biased TiO2 films. , 2001, Environmental science & technology.

[138]  M. Hoffmann,et al.  Chemical and Physical Characterization of a TiO2-Coated Fiber Optic Cable Reactor , 1996 .

[139]  W. Kuo.  Preparation and photocatalytic activity of metal‐supported resin‐bonded titania , 2000 .

[140]  A. Davis,et al.  The removal of substituted phenols by a photocatalytic oxidation process with cadmium sulfide , 1990 .

[141]  C. Galindo,et al.  Photooxidation of the phenylazonaphthol AO20 on TIO2: kinetic and mechanistic investigations. , 2001, Chemosphere.

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

[143]  J. Giménez,et al.  Low-concentrating CPC collectors for photocatalytic water detoxification: Comparison with a medium concentrating solar collector , 1997 .

[144]  Y. Takimoto,et al.  The fate of pesticides in aquatic ecosystems. , 1990 .

[145]  J. Herrmann,et al.  Heterogeneous photocatalysis: fundamentals and applications to the removal of various types of aqueous pollutants , 1999 .

[146]  D. Bahnemann,et al.  Environmental photochemistry: is iron oxide (hematite) an active photocatalyst? A comparative study: α-Fe2O3, ZnO, TiO2 , 1989 .

[147]  J. Ludvík,et al.  Kinetics of photocatalytic degradation of diuron in aqueous colloidal solutions of Q-TiO2 particles , 2003 .

[148]  M. S. Hegde,et al.  Photocatalytic degradation of organic compounds over combustion-synthesized nano-TiO2. , 2004, Environmental science & technology.

[149]  J. C. Garcia,et al.  Photocatalytic degradation of imazaquin in an aqueous suspension of titanium dioxide , 2003 .

[150]  M. Grätzel,et al.  Accelerated decomposition of active phosphates on TiO2 surfaces , 1987 .

[151]  C. González,et al.  Photocatalytic degradation of atrazine by porphyrin and phthalocyanine complexes. , 2000, Chemosphere.

[152]  T. Chopin,et al.  Degradation of phenyltrifluoromethylketone in water by separate or simultaneous use of TiO2 photocatalysis and 30 or 515 kHz ultrasound , 1999 .

[153]  G. Marcì,et al.  Photocatalytic oxidation of cyanides in aqueous titanium dioxide suspensions , 1997 .

[154]  C. Minero,et al.  Kinetic studies in heterogeneous photocatalysis. 6. AM1 simulated sunlight photodegradation over titania in aqueous media: a first case of fluorinated aromatics and identification of intermediates , 1991 .

[155]  C. Minero,et al.  Photocatalytic degradation of DDT mediated in aqueous semiconductor slurries by simulated sunlight , 1989 .

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

[157]  J. Csanádi,et al.  Photocatalytic oxidation of the fungicide metalaxyl dissolved in water over TiO2 , 1999 .

[158]  D. Ollis,et al.  Degradation of chloroform by photoassisted heterogeneous catalysis in dilute aqueous suspensions of titanium dioxide. , 1983, Environmental science & technology.

[159]  Peter K. J. Robertson,et al.  The alteration of the structural properties and photocatalytic activity of TiO2 following exposure to non-linear irradiation sources , 2003 .

[160]  D. Crosby,et al.  Aquatic and Surface Photochemistry , 1994 .

[161]  M. Grätzel,et al.  Photodecomposition of Liquid Water with TiO2‐Supported Noble Metal Clusters , 1983 .

[162]  H. Wamhoff,et al.  Photodegradation of imidacloprid. , 1999, Journal of agricultural and food chemistry.

[163]  Kuo-Hua Wang,et al.  Photocatalytic degradation of 2-chloro and 2-nitrophenol by titanium dioxide suspensions in aqueous solution , 1999 .

[164]  L. Lewis.  Chemical catalysis by colloids and clusters , 1993 .

[165]  H. Harada.  Sonophotocatalytic decomposition of water using TiO(2) photocatalyst. , 2001, Ultrasonics sonochemistry.

[166]  R. W. Matthews,et al.  Photo-oxidation of organic material in aqueous suspensions of titanium dioxide , 1986 .

[167]  Kuo-Hua Wang,et al.  The heterogeneous photocatalytic degradation, intermediates and mineralization for the aqueous solution of cresols and nitrophenols , 1998 .

[168]  J. Crittenden,et al.  Solar detoxification of fuel-contaminated groundwater using fixed-bed photocatalysts , 1996 .

[169]  N. Xu,et al.  Effects of Particle Size of TiO2 on Photocatalytic Degradation of Methylene Blue in Aqueous Suspensions , 1999 .

[170]  W. Jenks,et al.  Photocatalytic degradation of a cyanuric acid, a recalcitrant species , 2004 .

[171]  M. I. Maldonado,et al.  Solar photocatalytic mineralization of commercial pesticides: methamidophos. , 1999, Chemosphere.

[172]  Y. Wada,et al.  Photoreductive dehalogenation of halogenated benzene derivatives using ZnS or CdS nanocrystallites as photocatalysts. , 2001, Environmental science & technology.

[173]  Christian Sattler,et al.  Compound parabolic concentrator technology development to commercial solar detoxification applications , 1999 .

[174]  J. Blanco,et al.  TiO2-based solar photocatalytic detoxification of water containing organic pollutants. Case studies of 2,4-dichlorophenoxyaceticacid (2,4-D) and of benzofuran , 1998 .

[175]  J. Terol,et al.  Continuous flow photocatalytic degradation of carbaryl in aqueous media , 1993 .

[176]  J. Ouazzani,et al.  Study of the mechanisms of the photodegradation of atrazine in the presence of two photocatalysts: TiO2 and Na4W10O32 , 1999 .

[177]  G. Marcì,et al.  PREPARATION, CHARACTERIZATION AND PHOTOCATALYTIC ACTIVITY OF POLYCRYSTALLINE ZNO/TIO2 SYSTEMS. 2. SURFACE, BULK CHARACTERIZATION, 4-NITROPHENOL PHOTODEGRADATION IN LIQUID–SOLID REGIME , 2001 .

[178]  H. Harada,et al.  Sonophotocatalysis of water in a CO2-Ar atmosphere , 2003 .

[179]  B. Abramović,et al.  Photomineralization of the herbicide mecoprop dissolved in water sensitized by TiO2 , 2000 .

[180]  N. Aoyama,et al.  Characterization of Highly Active AgCl/Al2O3 Catalyst for Photocatalytic Conversion of NO , 2000 .

[181]  Nick Serpone,et al.  Sunlight photodegradation of 2,4,5-trichlorophenoxy-acetic acid and 2,4,5,trichlorophenol on TiO2. Identification of intermediates and degradation pathway , 1987 .

[182]  J. Kiwi.  Role of oxygen at the TiO2 interface during photodegradation of biologically difficult‐to‐degrade anthraquinone‐sulfonate dyes , 1994 .

[183]  M. Vincent,et al.  Photocatalytic degradation of industrial residual waters , 1996 .

[184]  Andrew Mills,et al.  An overview of semiconductor photocatalysis , 1997 .

[185]  T. Kijima,et al.  Photocatalytic Property and Electronic Structure of Lanthanide Tantalates, LnTaO4 (Ln = La, Ce, Pr, Nd, and Sm) , 2001 .

[186]  Changwen Hu,et al.  Photocatalytic degradation of aqueous organocholorine pesticide on the layered double hydroxide pillared by Paratungstate A ion, Mg12Al6(OH)36(W7O24)·4H2O , 2001 .

[187]  M. I. Maldonado,et al.  Photocatalytic pilot scale degradation study of Pyrimethanil and of its main degradation products in waters by means of solid-phase extraction followed by gas and liquid chromatography with mass spectrometry detection , 2000 .

[188]  byung-woo kim,et al.  Photodegradation of alachlor with the TiO(2) film immobilised on the glass tube in aqueous solution. , 2003, Chemosphere.

[189]  C. Wan,et al.  Heterogeneous photocatalytic oxidation of phenol with titanium dioxide powders , 1991 .

[190]  L. Wang,et al.  Photocatalytic degradation of AZO dyes by supported TiO2 + UV in aqueous solution. , 2000, Chemosphere.

[191]  G. Roam,et al.  Factors affecting the photocatalytic degradation of dichlorvos over titanium dioxide supported on glass , 1993 .

[192]  M. Grätzel,et al.  Photolysis of water with supported noble metal clusters, the fate of oxygen in titania based water cleavage systems , 1984 .

[193]  R. A. Maithreepala,et al.  Photodegradation of 3,4-dichloropropionamide in aqueous TiO2 suspensions , 1997 .

[194]  Julián Blanco,et al.  Large solar plant photocatalytic water decontamination : degradation of pentachlorophenol , 1993 .

[195]  K. Rajeshwar,et al.  Sonolytic enhancement of the bactericidal activity of irradiated titanium dioxide suspensions in water , 1997 .