Effects of hydroxyl free radical inhibitors on TiO2 photocatalysis with different crystalline

TANG JianJun1;FAN XiaoJiang2;ZOU Yuan1;ZHANG Wei1;ZHOU KangGen2

Journal of Beijing University of Chemical Technology ›› 2009, Vol. 36 ›› Issue (3) : 36-40.

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Journal of Beijing University of Chemical Technology ›› 2009, Vol. 36 ›› Issue (3) : 36-40.
化学与化学工程

Effects of hydroxyl free radical inhibitors on TiO2 photocatalysis with different crystalline

  • TANG JianJun1;FAN XiaoJiang2;ZOU Yuan1;ZHANG Wei1;ZHOU KangGen2

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Abstract

Hydroxyl free radical (·OH) production from photocatalytic reaction systems with different crystalline forms of TiO2 as photocatalyst has been analyzed by fluorescence spectroscopy. The results indicated that ·OH radicals could be constantly produced by rutile TiO2 under visiblelight irradiation in the presence of H2O2, whereas ·OH radicals could not be detected when using anatase TiO2 as photocatalyst. Photocatalytic results indicated that phenol could be degraded by visiblelight photocatalysis with both rutile and anatase TiO2 in thepresence of H2O2, and the presence of hydroxyl free radical inhibitors (tert-butyl alcohol or methanol) led to a significant decrease in the degradation efficiency of rutile TiO2 but had much less effect on anatase TiO2 . The degradation of phenol occurred mainly in solution when using rutile TiO2 as photocatalyst, whereas the degradation occurred mainly at the TiO2 particle surface when using anatase TiO2 as photocatalyst.

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TANG JianJun1;FAN XiaoJiang2;ZOU Yuan1;ZHANG Wei1;ZHOU KangGen2

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Effects of hydroxyl free radical inhibitors on TiO2 photocatalysis with different crystalline[J]. Journal of Beijing University of Chemical Technology, 2009, 36(3): 36-40

References

[1]Cornish B J P A, Lawton L A, Robertson P K J. Hydrogen peroxide enhanced photocatalytic oxidation of microcystinLR using titanium dioxide[J].Applied Catalysis B: Environmental, 2000, 25: 59-67.
[2]李青松, 高乃云, 马晓雁, 等. TiO2光催化降解水中内分泌干扰物17β-
雌二醇[J]. 环境科学, 2007, 28(1): 120-125.Li Q S, Gao N Y, Ma X Y, et al. Photocatalytic endocrine disruptor 17βestradiol(E2) in drinking water by nano titanium suspended system[J]. Environmental Science, 2007, 28(1): 120-125. (in Chinese)
[3]Li X Z, Chen C C, Zhao J C. Mechanism of photodecomposition of H2O2 o
n TiO2 surfaces under visible light irradiation[J]. Langmuir, 2001, 17: 4118-4122.
[4]Wu T X, Lin T, Zhao J C, et al. TiO2Assisted photodegradation of dyes
. 9. photooxidation of a squarylium cyanine dye in aqueous dispersions under visible light irradiation[J]. Environmental Science and Technology, 1999,33:1379-1387.
[5]刘光明, 张天永, 吴太兴, 等.可见光照射下染料茜素红的光催化降解机理
[J]. 催化学报, 1999, 20(3): 359-361.Liu G M, Zhang T Y, Wu T X, et al. Mechanism of photocatalytic degradation of dye pollutantalizarin red under visible light radiation[J]. Chinese Journal of Catalysis, 1999, 20(3): 359-361. (in Chinese)
[6]Wu T X, Liu G M, Zhao J C, et al. Evidence for H2O2 generation during
the TiO2assisted photodegradation of dyes in aqueous dispersions under visible light illumination〖JP2〗[J]. Journal of Physical Chemistry B, 1999, 103: 4862-〖JP〗4867.
[7]Ohno T, Masaki Y, Hirayama S, et al. TiO2Photocatalyzed epoxidation o
f 1decene by H2O2 under visible light[J]. Journal of Catalysis, 2001, 204: 163168.
[8]杨松旺, 高濂. 简单有效掺氮氧化钛纳米晶的制备及其可见光催化性能[J
]. 无机材料学报, 2005, 20(4): 785-788.Yang S W, Gao L. Simple and effective preparation of Ndoped TiO2 nanocrystallites with visiblelight activities[J]. Journal of Inorganic Materials,2005,20(4): 785-788. (in Chinese)〖ZK)〗
[9]Bader H, Sturzenegger V, Hoigné J. Photometric method for the determ
ination of low concentrations of hydrogen peroxide by the peroxidase catalyzed oxidation of N,Ndiethylpphenylenediamine (DPD)[J]. Water Research, 1988, 22(9):1109-1115.
[10]Ishibashi K, Fujishima A, Watanabe T, et al. Detection of ac
tive oxidative species in TiO2 photocatalysis using the fluorescence technique[J]. Electrochemistry Communications, 2000, 2: 207-210.
[11]赵超, 方艳芬, 黄应平, 等. 异相Fenton光催化对有毒有机污染物的降解
[J]. 分析科学学报, 2007, 23(3): 273-276.Zhao C, Fang Y F, Huang Y P, et al. Degradation of RhB by heterogeneous fenton system under visible 〖JP2〗irradiation[J]. Journal of Analytical Science,2007, 23(3): 273-〖JP〗276. (in Chinese)〖ZK)〗
[12]Hirakawa T, Yawata K, Nosaka Y. Photocatalytic reactivity for O-2·
and OH· radical formation in anatase and rutile TiO2 suspension as the effectof H2O2 addition[J]. Applied Catalysis A: General, 2007, 325: 105-111.
[13]唐玉朝, 李薇, 胡春, 等. TiO2形态结构与光催化活性关系的研究[J]
. 化学进展, 2003, 15(5): 379-384.Tang Y C, Li W, Hu C, et al. Studies on morphological structure and photoactivity of TiO2 heterogeneous 〖JP2〗photocatalysts[J]. Progress In Chemistry,2003, 15(5): 379-〖JP〗384. (in Chinese)

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