|Table of Contents|

Study of Sensitized TiO2 on Photocatalytic Degradation Paths of Rhodamine B by Spectroscopy Methods(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2011年01期
Page:
64-67
Research Field:
物理学
Publishing date:

Info

Title:
Study of Sensitized TiO2 on Photocatalytic Degradation Paths of Rhodamine B by Spectroscopy Methods
Author(s):
Liu Hailong1; Zhou Yan1; Huang Heyong1; Feng Yuying1; Wang Xinghe2
1.School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210046,China 2. School of Phys ics and Technology, Nanj ing Norm alUn iversity, Nan jing 210046, China
Keywords:
UV-v is spectra;  fluorescence spectra;  sens itized T iO2;  rhodam ine B
PACS:
TB383.1
DOI:
-
Abstract:
The photocata ly tic deg radation produc ts of Rhodam ine B ( RhB ) on T iO2 nanopartica l m odified w ith Phthaland ione( o-PTA ), wh ich was prepa red through the so-l gel m ehtod, have been investigated by UV-v is spectroscopy and fluorescence spectroscopy. The resu lts ind icated tha t N-de- ethy lation of RhB that leads to the generation o f rhodam ine- 110 was a preva iling path w ith o-PTA /T iO2, whereas the cleavage of the ch rom ophor ic r ing structure w as dom inant w ith pure TiO2. The tw o paths prov ided a theory base for the photocatalytic deg radation of se ries of dye pollutants likeRhB.

References:

[ 1]Zhao J C, Wu T X, W u K Q, e t a.l Photoassisted degradation o f dye po llutan ts. 3. Deg radation of the cation ic dye Rhodam ine B in aqueous an ion ic sur fac tant /T iO2 dispersions under v isib le light irradiation: ev idence for the need o f substra te adsorption on T iO2 partic les[ J]. Env iron Sci Techno ,l 1998, 32( 16): 2 394-2 400.
[ 2]W ang Q, Chen C C, Zhao D, et a .l Change o f adso rption m odes of dyes on fluor ina ted T iO2 and its effect on photocata lytic degrada tion o f dyes under v isible irradiation[ J]. Langm uir, 2008, 24( 14): 7 338-7 345
[ 3] H u X F, Ta riqM, M aW H, et a.l Ox idative decom position o f Rhodam ine B dye in the presence o f VO2 + and /o r Pt( IV) under v is ible ligh t irrad iation: N-Deethy lation, chromophore cleavage, and m inera liza tion[ J] . J Phys Chem B, 2006, 110 ( 51): 26 012-26 018
[ 4]郑怀礼, 张峻华, 熊文强. 纳米T iO2 光催化降解有机污染物研究与应用新进展[ J]. 光谱学与光谱分析, 2004, 24 ( 8): 1 003-1 008
[ 5]H ag feld A, Gratze lM. Light- induced redox reac tions in nanocrystalline system s[ J]. Chem Rev, 1995, 95( 1): 49-68.
[ 6]Ou Y, L in J D, Zou H M, e t a.l Effects of surfacem odification o f TiO2 w ith ascorbic acid on photocata ly tic deco lo rization of an a zo dye reactions and m echan ism s[ J] . Journa l ofM o lecular Ca talysis A, 2005, 241: 59-64
[ 7]Wu T X, L iu G M, Zhao J C, et a.l Photoass isted deg radation of dy e po llutants. V. se l-f photosensitized ox idative transfo rm ation o f Rhodam ine B under v is ible ligh t irradiation in aqueous T iO2 d ispersions[ J]. J Phy s Chem B, 1998, 102( 30): 5 845-5 851.
[ 8]L iu G, LiX, Zhao J, H idakaH, e t a.l Pho toox idation pa thway of su lforhodam ine-B. dependence on the adso rption m ode on T iO2 exposed to v isib le light radiation[ J]. Env iron Sci Techno ,l 2000, 34( 18): 3 982-3 990.
[ 9]H yunwoong P, Wonyong C. Pho tocata lytic reac tiv ities o f nafion-coated T iO2 for the deg radation of charged o rganic compounds under UV or v isible L ight[ J]. J Phy s Chem B, 2005, 109( 23): 11 669-11 674.

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Last Update: 2013-04-11