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TiO2

OHP25TiO500mg/L5g/LP25TiO0.4~0.71~3mTiO220nmOHOH

TiO2[1]TiO2TiO2[2-4]TiO2[5-7](organic matter degradation)TiO2TiO2[8]TiO2TiO2[9-10]TiO2[11]TiO2[12]Degussa P25TiO2TiO2TiO2

TiO2TiO2Degussa P25TiO2Degussa P25AEROSIL21nmBET(5015)m2/gTiO2TiCl4TiO2205nm(20030)m2/gCR-826/0.2m

Escherichia coliAS1.904-6

10.0g5.0g5.0g15g1000mLpH7.011515min

0.85%pH7.012120min

MIC[13]AS1.9061g10ml100g/L10g/L1g/L500mg/L1ml1ml105cfu/ml45~50TTC30ml1h3724hMIC

JEOL-2010transmission electron microscope TEMTiO2Quanta-200(FEI)(scanning electron microscopeSEM)TiO2

TiO2OHBruker ESP-300Eelectron spin resonanceESRTiO2OHTiO2355nm0.01T20mWX1103210-4TDMPO55-dimethyl-1-pyrroline-N-oxide0.1mol/L40L DMPO

MICP25TiO2CR-82631

13P25500mg/LTiO25g/LCR-826TiO2P25HG/T3794-2005800mg/LTiO2

1P2520 nm2TiO220nmP25P25TiO2

3P25TiO2355nmESROHP25TiO2OHESRTiO2

P25TiO2OH[14]TiO2OHTiO2ESROH

455g/L500mg/LTiO224h64A74B6ClTiOFeNaCrNClClOFeNaCrTiTiO264TiO2TiO27TiO2ClNaKFeCr64TiO25TiO20.4-0.71-3m55P254

0.4~0.71~3mTiO220nmOHSEMV.A. Nadtochenko[15]P25Kayano Sunada[16]TiO2TiO2

TiO2[917]TiO2OH[11]TEMP2520nmTiO220nmTiO2P25TiO2

1Degussa P25TiO2CR-826P25MIC500mg/LTiO2MIC5g/LCR-826

2TiO2

3SEMTiO2OH

1TiO2[J]20051718-14

22009444-47

3 Maxim A. Zhukovskiya, Alexander L. Stroyukb, et al. Photocatalytic growth of CdS, PbS, and CuxS nanoparticles on the nanocrystalline TiO2 films[J]Photochemistry and Photobiology A: Chemistry 15 April 2009, Pages 137-144

4 Xintong Zhang, Keizo Udagawa, Zhaoyue Liu, et al. Photocatalytic and photoelectrochemical studies on N-doped TiO2 photocatalyst[J]Photochemistry and Photobiology A: Chemistry 5 February 2009, Pages 39-47

5 5--TiO2[J]200727164-68

6[J]20062712:1045-1047

7200930265-70

8 Yoshihiko Kikuchia, Kayano Sunadaa, Tomokazu Iyodaa, et al. Photocatalytic bactericidal effect of TiO2 thin films: dynamic view of the active oxygen species responsible for the effect[J]Photochemistry and Photobiology A: Chemistry 1997Volume 106, Issues 1-3, Pages 51-56

9 L. Caballero, K.A. Whitehead, N.S. Allenet al. Inactivation ofEscherichia colion immobilized TiO2using fluorescent light[J]Photochemistry and Photobiology A: Chemistry 2009, Vol202 No2-3, Pages 92-98

10 Amrita Pala, Simo O. Pehkonenb, Liya E. Yuet al. Photocatalytic inactivation of Gram-positive and Gram-negative bacteria using fluorescent light[J]Photochemistry and Photobiology A: Chemistry 2007, Vol186 No2-3Pages 335-341

11 V. Nadtochenko, N. Denisov, O. Sarkisov, et al. Laser kinetic spectroscopy of the interfacial charge transfer between membrane cell walls of E. coliand TiO2[J]Photochemistry and Photobiology A: Chemistry 2006Volume 181, Issues 2-3

12 Zheng Huang, Pin-Ching Maness, Daniel M. Blake, et al. Bactericidal mode of titanium dioxide photocatalysis[J]Photochemistry and Photobiology A: Chemistry 2000, Vol130 No2-3Pages 163-170

132002P85-86

15 V.A. Nadtochenko, A.G. Rincon, S.E. Stancaet al. Dynamics of E. coli membrane cell peroxidation during TiO2 photocatalysis studied by ATR-FTIR spectroscopy and AFM microscopy[J]Photochemistry and Photobiology A: Chemistry 2005, Vol169 No2 Pages 131-137

16 Kayano Sunada, Toshiya Watanabe and Kazuhito HashimotoStudies on photokilling of bacteria on TiO2thin film [J]Photochemistry and Photobiology A: Chemistry 2003, Vol156 No1-3Pages 227-233

17 Rahman Q,Lohani M, Dopp E, et al. Evidence that ultrafine titanium dioxide induces micronuclei and apoptosis in Syrian hamster embryo fibroblasts. Environ Health Perspect,2002,110:797-800

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