Concentration-dependent photoredox conversion of as(III)/As(V) on illuminated titanium dioxide electrodes

Environmental Science and Technology

Volumn 46, Issue 10, 2012, Pages 5519-5527

  Monllor Satoca, Damián ^a,b   Gómez, Roberto ^b   Choi, Wonyong ^a  

^a Pohang University of Science and Technology (POSTECH)   (South Korea)

^b UNIVERSITY OF ALICANTE   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

ANOXIC CONDITIONS; CHARGE RECOMBINATIONS; CONCENTRATION RANGES; CONCENTRATION-DEPENDENT; ELECTRON ACCEPTOR; EXPERIMENTAL CONDITIONS; MESOPOROUS TIO; MICROMOLAR RANGE; MILLIMOLAR RANGE; OPEN CIRCUIT POTENTIAL MEASUREMENTS; PHOTOCATALYTIC OXIDATIONS; PHOTOCONVERSION; PHOTOELECTROCHEMICALS; SURFACE DEACTIVATION; TITANIUM DIOXIDE ELECTRODE; UV IRRADIATION; WATER PHOTOOXIDATION;

PHOTOOXIDATION;

TITANIUM DIOXIDE;

ARSENIC ACID; ARSENIC TRIOXIDE; TITANIUM DIOXIDE; WATER;

ARSENIC; CATALYSIS; CELL ORGANELLE; CONCENTRATION (COMPOSITION); ELECTRODE; ELECTRON; EXPERIMENTAL STUDY; OXIDE; REDOX POTENTIAL; ULTRAVIOLET RADIATION;

ARTICLE; CONCENTRATION RESPONSE; ELECTRODE; ELECTRON; PHOTOCHEMISTRY; PHOTOOXIDATION; PHOTOREDOX CONVERSION; ULTRAVIOLET IRRADIATION;

ARSENATES; ARSENIC; ARSENITES; ELECTRICITY; ELECTROCHEMICAL TECHNIQUES; ELECTRODES; HYDROGEN-ION CONCENTRATION; LIGHT; OXIDATION-REDUCTION; TITANIUM;

EID: 84861120261     PISSN: 0013936X     EISSN: 15205851     Source Type: Journal    
DOI: 10.1021/es203922g     Document Type: Article

References (37)

1. Cullen, W. R.; Reimer, K. J. Arsenic speciation in the environment Chem. Rev. 1989, 89, 713-764
2. Leist, M.; Casey, R. J.; Caridi, D. The management of arsenic wastes: Problems and prospects J. Hazard. Mater. 2000, 76, 125-138
3. Pirilä, M.; Martikainen, M.; Ainassaari, K.; Kuokkanen, T.; Keiski, R. L. Removal of aqueous As(III) and As(V) by hydrous titanium dioxide J. Colloid Interface Sci. 2011, 353, 257-262
4. Zhang, G.-S.; Qu, J.-H.; Liu, H.-J.; Liu, R.-P.; Li, G.-T. Removal mechanism of As(III) by a novel Fe-Mn binary oxide adsorbent: Oxidation and sorption Environ. Sci. Technol. 2007, 41, 4613-4619
5. Kanel, S. R.; Grenéche, J.-M.; Choi, H. Arsenic (V) removal from groundwater using nano scale zero-valent iron as a colloidal reactive barrier material Environ. Sci. Technol. 2006, 40, 2045-2050
6. Sharma, V. K.; Dutta, P. K.; Ray, A. K. Review of kinetics of chemical and photocatalytical oxidation of arsenic (III) as influenced by pH J. Environ. Sci. Health A 2007, 42, 997
7. Yang, H.; Lin, W.-Y.; Rajeshwar, K. Homogeneous and heterogeneous photocatalytic reactions involving As(III) and As(V) species in aqueous media J. Photochem. Photobiol. A: Chem. 1999, 123, 137-143
8. 2 suspension: Kinetics and mechanisms Environ. Sci. Technol. 2002, 36, 3872-3878
9. 2 surface modifications on photocatalytic oxidation of arsenite: The role of superoxides Environ. Sci. Technol. 2004, 38, 2928-2933
10. 2: Understanding the controversial oxidation mechanism involving superoxides and the effect of alternative electron acceptors Environ. Sci. Technol. 2006, 40, 7034-7039
11. Kim, N.-J.; Nriagu, J. Oxidation of arsenite in groundwater using ozone and oxygen Sci. Total Environ. 2000, 247, 71-79
12. 2 assisted photocatalysis J. Phys. Chem. A 2005, 109, 9070-9075
13. 2 system: Evidence for a direct hole oxidation mechanism Environ. Sci. Technol. 2005, 39, 9695-9701
14. 2- photocatalyzed As(III) oxidation in aqueous suspensions: Reaction kinetics and effects of adsorption Environ. Sci. Technol. 2005, 39, 1880-1886
15. Dutta, P. K.; Pehkonen, S. O.; Sharma, V. K.; Ray, A. K. Photocatalytic oxidation of As(III): Evidence of hydroxyl radicals Environ. Sci. Technol. 2005, 39, 1827-1834
16. 2 photocatalytic oxidation mechanism of As(III) Environ. Sci. Technol. 2009, 43, 864-869
17. 2: Unique role of As(III) as a charge recombinant species Environ. Sci. Technol. 2010, 44, 9099-9104
18. 2: Unique role of As(III) as a charge recombinant species Environ. Sci. Technol. 2011, 45, 2030-2031
19. Klänig, U. K.; Bielski, B. H. J.; Sehested, K. Arsenic (IV): A pulse-radiolysis study Inorg. Chem. 1989, 28, 2717-2724
20. 2 (rutile) single crystal electrode Ber. Bunsen-Ges. Phys. Chem. 1976, 80, 1285-1288
21. 2 thin-film electrodes in contact with aqueous electrolytes containing dissolved pollutants: A model for distinguishing between direct and indirect interfacial hole transfer from photocurrent measurements J. Phys. Chem. B 2005, 109, 3371-3380
22. 2 particulate films J. Phys. Chem. 1994, 98, 6797-6803
23. 2: Is superoxide the main oxidant in normal air-saturated aqueous solutions? Environ. Sci. Technol. 2011, 45, 4532-4539
24. 2: Is superoxide the main oxidant in normal air-saturated aqueous solutions? Environ. Sci. Technol. 2011, 45, 9816-9817
25. Sadiq, M.; Zaidi, T. H.; Mian, A. A. Environmental behavior of arsenic in soils: Theoretical Water, Air, Soil Pollut. 1983, 20, 369-377
26. Pena, M.; Meng, X.; Korfiatis, G. P.; Jing, C. Adsorption mechanism of arsenic on nanocrystalline titanium dioxide Environ. Sci. Technol. 2006, 40, 1257-1262
27. Standard Potentials in Aqueous Solution; Bard, A. J.; Parsons, R.; Jordan, J., Eds.; Marcel Dekker: New York, 1985; Chapter 7.
28. 2 nanoporous layers J. Phys. Chem. C 2008, 112, 139-147
29. 2 photocatalyst modified with dual surface components Energy Environ. Sci. 2012, 10.1039/C2EE21310A
30. 2 (rutile) (110) and (100) surfaces: Dependence on solution pH J. Am. Chem. Soc. 2007, 129, 11569-11578
31. 3 thin-film electrodes: The oxidation of formic acid ChemPhysChem 2006, 7, 2540-2551
32. Vanmaekelbergh, D.; de Jongh, P. E. Driving force for electron transport in porous nanostructured photoelectrodes J. Phys. Chem. B 1999, 103, 747-750
33. Bard, A. J.; Faulkner, L. R. Electrochemical Methods: Fundamentals and Applications, 2 nd ed.; John Wiley & Sons: New York, 2001; Chapter 14.
34. Monllor-Satoca, D.; Gómez, R. A photoelectrochemical and spectroscopic study of phenol and catechol oxidation on titanium dioxide nanoporous electrodes Electrochim. Acta 2010, 55, 4661-4668
35. Hoffmann, M. R.; Martin, S. T.; Choi, W.; Bahnemann, D. W. Environmental applications of semiconductor photocatalysis Chem. Rev. 1995, 95, 69-96
36. Berger, T.; Lana-Villarreal, T.; Monllor-Satoca, D.; Gómez, R. Thin films of rutile quantum-size nanowires as electrodes: Photoelectrochemical studies J. Phys. Chem. C 2008, 112, 15920-15928
37. Gerischer, H.; Heller, A. The role of oxygen in photooxidation of organic molecules on semiconductor nanoparticles J. Phys. Chem. 1991, 95, 5261-5267