The Degradation of p-Nitrochlorobenzene in Aqueous Solution by TiO2/UV/O2 and TiO2/UV/N2 System

doi:10.7517/j.issn.1674-0475.2007.04.296

Abstract

Abstract: The photocatalytic degradation of p-nitrochlorobenzene(pCNB) was studied using two different catalytic system——TiO₂/UV/O₂ and TiO₂/UV/N₂.The main intermediate products in the two systems were identified and quantified by means of HPLC-MS,the modality of chlorine and nitryl on pCNB was studied during the photocatalytic degradation reaction,at last, the hydroxyl radicals in these two different catalytic systems were detected.Results showed that the efficiency of the degradation of pCNB in TiO₂/UV/O₂ system is much better than that of TiO₂/UV/N₂ system;the hydroxyl radicals was formed in both of the two systems,but the quantity of the hydroxyl radicals is much more than that of TiO₂/UV/N₂ system;the main intermediate products in TiO₂/UV/O₂ system is much more than that of TiO₂/UV/N₂ system,and p-nitrophenol(pNP),p-chlorophenol(pCP),5-chlor-2-nitrophenol(5-C-2-PN) were the same intermediate products in both of these two systems;Cl^-and NO₂^-were detected in both of these two reaction systems,and NO₃^-was detected only in the TiO₂/UV/O₂ system.

Key words: titanium oxide, p-nitrochlorobenzene, photocatalysis, hydroxyl radicals, ESR

CLC Number:

X703
O64

YE Miao-miao, CHEN Zhong-lin, SHEN Ji-min, BEN Yue. The Degradation of p-Nitrochlorobenzene in Aqueous Solution by TiO₂/UV/O₂ and TiO₂/UV/N₂ System[J]. Imaging Science and Photochemistry, 2007, 25(4): 296-305.

References

[1] 徐根良,徐秀珠.环境中痕量特殊有机污染物的高效液相色谱测定[J].浙江大学学报,1999,33(3):323-327.Xu G L,Xu X Z.Determination of trace organic pollutantsinthe environment by high-performanceliquid chromato-graphy[J].Journal of Zhejiang University,1999,33(3):323-327.
[2] Liang C.Market analysis and development projectionsfor chlorobenzene product series[J].China Chemical Reporter,2004,26:20-24.
[3] Travlos GS,Mahler J,Ragan HA,et al.Thirteen-weekinhalationtoxicity of 2-and 4-chloronitrobenzenein F344/Nrats and B6C3F1 mice[J].Fundamental and Applied Toxicology,1996,30(1):75-92.
[4] Weisburger E K,Russfield F,Homburger J,et al.Testing of twenty one environmental aromatic amines or deriva-tives for long termtoxicity or carcincgenicity[J].Environ.Pathol.Texicol.,1978,2:325-356.
[5] Andreozzi R,Caprio V,Insola A,et al.The ozonation of pyruvic acidin aqueous solutions catalyzed bysuspended anddissolved manganese[J].Water Research,1998,(5):1492-1496.
[6] Hisashi H,Toyotoshi U.Photocatalytic activity of ultrafine rutil in methanol-water solution and dependence of activityon particle size[J].Chemical Physicas Letter,1984,106(3),229-231.
[7] Iis S,Mitsuru W,Sadao M,et al.Efficient TiO₂powder and fil m photocatalysts with rutile crystal structure[J].Chemistry Letters,1996,(1):69-70.
[8] Salah R,Pascal W,Sylvie N.Phototransformation of triclosaninthe presence of TiO₂in aqueoussuspension:mecha-nistic approach[J].Applied Catalysis B:Environmental,2006,66:119-125.
[9] Kosaka1 K,Yamada1 H,Shishida K,et al.Evaluation of the treatment performance of amultistage ozone/hydrogenperoxide process by decomposition by-products[J].Water Research,2001,35(10):3587-3594.
[10] Buttner G R.Spin trapping:ESR parameters of spin adducts Free Radical Biol[J].Med.,1987,(3):259-303.
[11] Gratzel C K,Jirousek M,Gratzel M.Decomposition of organophosphorous compounds on photoactivated TiO₂sur-faces[J].Journal of Molecular Catalysis,1990,60:375-387.
[12] Tang WZ,Huang P C.The effect of chlorine position of chlorinated phenols ontheir dechlorination kinetics by Fen-ton’s reagent[J].Waste Management,1995,15(8):612-622.
[13] Scheck C K,Fri mmel F F.Degradation of phenol andsalicylic acid by ultraviolet radiation hydrogen peroxide oxygen[J].Water Research,1995,29(10):2346-2352.

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The Degradation of p-Nitrochlorobenzene in Aqueous Solution by TiO₂/UV/O₂ and TiO₂/UV/N₂ System

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