实验研究

TiO2光催化降解活性艳红X-3B的研究

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  • 暨南大学理工学院环境工程系, 广东广州, 510632
汤心虎(1974- ),1999毕业于武汉大学,硕士.E-mail:ttangxh@sohu.com

收稿日期: 2004-07-24

  网络出版日期: 2010-10-01

基金资助

广东省科技计划资助项目;编号2002C31622

Study on the degradation of reactive brilliant red X-3B in UV-TiO2 system

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  • Department of Environmental Engineering, Jinan University, Guangzhou 510632, China

Received date: 2004-07-24

  Online published: 2010-10-01

摘要

研究了UV-TiO2体系对典型偶氮染料活性艳红X-3B模拟废水的光催化降解效果,探讨了废水pH、H2O2用量、紫外线波长、紫外线光强等因素对降解速率的影响。结果表明:(1)模拟废水的起始pH值影响活性艳红X-3B的光催化降解,在pH=3.0∼5.0时效果最佳;(2)投加少量H2O2可提高活性艳红X-3B的降解速率,但用量过大时会产生抑制作用;(3)UV光强是影响反应的外在动力,在0∼50μW/cm2范围内,光强越大降解速率越快;(4)UV波长对反应有重要影响,365nm的处理效果明显优于254nm的处理效果。

本文引用格式

汤心虎, 谭淑英 . TiO2光催化降解活性艳红X-3B的研究[J]. 工业水处理, 2004 , 24(12) : 25 -27 . DOI: 10.11894/1005-829x.2004.24(12).25

Abstract

Photocatalysis degradation effect of reactive brilliant red X-3B in UV-TiO2 system is studied, and some factors,such as pH,H2O2 dosage,UV wavelength and UV intensity,which impacted photocatalysis degradation of reactive brilliant red X-3B are discussed.The results are as follows:1)the optimum pH is 3.0-5.0;2)adding a little H2O2 can increase the reaction rate but the degradation rate can decrease when the dosage of H2O2 increased too much;3)enhancing UV intensity can increase the degradation rate;4)the degradation effect of 365 nm UV is better than that of 254 nm.

参考文献

[1] Hoffmxnn M R, etal. Environmental application of、miconductor photocxtxlysis[J]. Chem. Rev., 199s,95:69-96;
[2] Monecr M, et nl. Photocatalytic degradation of wastewater pollutants titanium dioxid-“Bate oxidation of x textile acid blue 40[J]. Rcs.Chem. Intermed. 1997, 23 (3 ):233-246;
[3] 张彭义,余刚,蒋展鹏.半导体光催化剂及其改性技术进展[J].环境污染治理技术与设各,1997,5(3): 1-10;
[4] 陈达美,钟建军,汪言满. Ti0=悬浮体系光催化降解染料动力学 研究[J].精细化工,2002,19(1): 55-58;
[5] 漆新华,庄源益,王中华,等.纳米TiO2=催化染料活性艳红: X-3B光降解[J].城市环境与城市生态,2002,15(6): 14-16;
[6] 钟世云,许乾慰,王公善.聚合物降解与稳定化[M].北京:化学工业出版辛L.2002.45

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