What is Degussa (Evonic) P25? Crystalline composition analysis, reconstruction from isolated pure particles and photocatalytic activity test

Journal of Photochemistry and Photobiology A: Chemistry

Volumn 216, Issue 2-3, 2010, Pages 179-182

  Ohtani, B ^a   Prieto Mahaney, O O ^a   Li, D ^a   Abe, R ^a  

^a HOKKAIDO UNIVERSITY   (Japan)

Author keywords

Anatase rutile amorphous mixture; Inhomogeneity of crystalline composition; Less probable synergetic effect; Powder X ray diffraction

Indexed keywords

EID: 78549277464     PISSN: 10106030     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jphotochem.2010.07.024     Document Type: Article

References (22)

1. ISI Web of Knowledge, Thomson Reuters.
2. The supplier, Degussa (Evonic) does not report the crystalline composition of P25. Many papers claiming the crystalline composition referred to papers which had not shown the method of determination.
3. B. Ohtani Preparing articles on photocatalysis - beyond the illusions, misconceptions and speculation Chem. Lett. 37 2008 216
4. 2 using EPR J. Phys. Chem. B 107 2003 4545
5. 2 powder by dissolving the anatase component in HF solution J. Phys. Chem. B 105 2001 2417
6. B. Ohtani, Y. Azuma, D. Li, T. Ihara, and R. Abe Isolation of anatase crystallites from anatase-rutile mixed particles by dissolution with hydrogen peroxide and ammonia Trans. Mater. Res. Soc. Jpn. 32 2007 401
7. R.I. Bickley, T. Gonzalez-Carreno, J.S. Lees, L. Palmisano, and R.J.D. Tilley A structural investigation of titanium dioxide photocatalysts J. Solid State Chem. 92 1991 178
8. 2 photocatalyst (Degussa, P-25) consisting of anatase and rutile crystalline phases J. Catal. 203 2001 82
9. F. Amano, O.O. Prieto-Mahaney, Y. Terada, T. Yasumoto, T. Shibayama, and B. Ohtani Decahedral single-crystalline particles of anatase titanium(IV) oxide with high photocatalytic activity Chem. Mater. 21 2009 2601
10. F. Amano, T. Yasumoto, O.O. Prieto-Mahaney, S. Uchida, T. Shibayama, and B. Ohtani Photocatalytic activity of octahedral single-crystalline mesoparticles of anatase titanium(IV) oxide Chem. Commun. 45 2009 2311
11. O.O. Prieto-Mahaney, N. Murakami, R. Abe, and B. Ohtani Correlation between photocatalytic activities and structural and physical properties of titanium(IV) oxide powders Chem. Lett. 38 2009 238
12. H.P. Klug, and L.E. Alexander X-ray Diffraction Procedures for Polycrystalline and Amorphous Materials 2nd ed. 1974 Wiley New York p. 687.
13. R.A. Spurr, and H. Myers Quantitative analysis of anatase-rutile mixtures with an X-ray diffractometer Anal. Chem. 29 1957 760
14. S.-i. Nishimoto, B. Ohtani, A. Sakamoto, and T. Kagiya Photocatalytic activities of titanium(IV) oxide prepared from titanium(IV) sulfate Nippon Kagaku Kaishi 1984 246
15. S.-i. Nishimoto, B. Ohtani, H. Kajiwara, and T. Kagiya Correlation of the crystal structure of titanium dioxide prepared from titanium tetra-2-propoxide with the photocatalytic activity for redox reactions in aqueous propan-2-ol and silver salt solutions J. Chem. Soc., Faraday Trans. 1 81 1985 61
16. H. Jensen, K.D. Joensen, J.-E. Jorgensen, J.S. Pedersen, and E.G. Sogaard Characterization of nanosized partly crystalline photocatalysts J. Nanoparticle Res. 6 2004 519
17. B. Ohtani, Y. Ogawa, and S.-i. Nishimoto Photocatalytic activity of amorphous-anatase mixture of titanium(IV) oxide particles suspended in aqueous solutions J. Phys. Chem. B 101 1997 3746
18. M.E. Simonsen, H. Jensen, Z. Li, and E.G. Sogaard Surface properties and photocatalytic activity of nanocrystalline titania films J. Photochem. Photobiol. A: Chem. 200 2008 192
19. A.K. Datye, G. Riegel, J.R. Bolton, M. Huang, and M.R. Prairie Microstructural characterization of a fumed titanium dioxide photocatalyst J. Solid State Chem. 115 1995 236
20. 2 particles in photocatalytic oxidation of naphthalene Appl. Catal. A: Gen. 244 2003 383
21. B. Ohtani, K. Iwai, S.-i. Nishimoto, and S. Sato Role of platinum deposits on titanium(IV) oxide particles: structural and kinetic analyses of photocatalytic reaction in aqueous alcohol and amino acid solutions J. Phys. Chem. B 101 1997 3349
22. T. Torimoto, N. Nakamura, S. Ikeda, and B. Ohtani Discrimination of active crystalline phase in anatase-rutile mixed titanium(IV) oxide photocatalysts through action spectrum analyses Phys. Chem. Chem. Phys. 4 2002 5910