( ) ( ) ZnO/TiO 2 : COD. TiO 2. TiO 2

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1 ayati_bi@modares.ac.ir () ( ) (// // ) ZnO/TiO 2 ph. SEM / / COD.. / KWh/ppm ppm. ZnO/TiO 2 : TiO 2.[] TiO 2. TiO 2 TiO 2.[] TiO 2 TiO 2. Ti + Zn TiO 2 ZnO TiO 2.[ ] -..[] ph.[ ].[-] 26

2 ... ZnO/TiO ZnO/TiO (C 16 H 11 N 2 NaO 4 S)..[] TiO 2.[] [] - WO 3 /TiO 2.[] UVc Ti-TiO 2.[] TAN ZnO/TiO 2 ph COD nonyl Phenol 2 Total Ammonia Nitrogen 3 Plaxiglass 27

3 (US nano) TiO 2 p Na 2 SO 4 COD. DR 4000 / PJ300 ph RH-Bassic 2 IKA PM-3005D DEM- TES Mira3 Tescan F.69 ERD. DRB200 COD -- " N " E..( ) - 1 Merck 2 Hach 3 Mettler 4 Megatek 5 Metrohm / / / / / / ph COD. -- ZnO/TiO 2 - [] ph TiO 2 / TiO 2. / ZnO/TiO 2 [] ZnO/TiO 2 :[] ph....[] 28

4 =/ Lit/min ph=/ []=mg/l) ([Na cm 2 2 SO 4 ]=/ M =.[ ] - [] ZnO/TiO 2 + h vb e cb - + h vb + H 2 O + h vb + OH + H + () () OH - + h vb + OH () / / /. /.[].[]. ppm. ppm / - -- SEM ZnO/TiO 2. ( SEM - ( ZnO/TiO Zn TiO 2 ZnO ZnO/TiO 2 TiO 2 TiO 2..( ) ZnO 29

5 ....[]..[] ppm - =/ Lit/min ph=/ []=mg/l) ([Na 2 SO 4 ]=/ M = cm 2 ZnO/TiO 2 (/ KWh/mg/L). - = cm 2 I=/A ph=/ []=mg/l) ([Na 2 SO 4 ]=/ M ph -- ph ph. ph. -- /. [] () O 2 + e cb - O 2 - O H + HO 2 () H 2 O 2 + e cb - OH + OH - H 2 O 2 + O 2 - OH + OH - + O 2 () () ph - =/ Lit/min I=/A []=mg/l) ([Na 2 SO 4 ]=/ M =cm 2 /.. 30

6 [] ppm. / ph. ph TiO 2 ph...[ ] ph / ph. ph - / ph ph.[ ] --. ppm - = A/cm 2 ph=/ []=mg/l) ([Na 2 SO 4 ]=/ M ppm. (/ KWh/mg/L). -- ph. - = A/cm 2 ph=/ []=mg/l) ([Na 2 SO 4 ]=/ M - 1 Microsystin-LR 2 4-nonylphenol 31

7 .... /.[] ZnO/TiO 2 -- ZnO/TiO 2.. ZnO/TiO 2 ZnO/TiO 2 - I=/A ph=/ []=mg/l) ([Na 2 SO 4 ]=/ M = cm 2 COD -- COD. COD. 1 Pentachlorophenol S 2 O 8 SO 4.. S 2 O e - SO SO 4 - O H 2 O+ e - SO OH OH + SO 4 2- OH - + SO 4 - () () () h + + SO SO 4 ().[ ] / /. - A ph=/ []=mg/l) ( = cm 2 =Lit/min I=/ / /.[] 32

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