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题名: Reaction kinetics of photocatalytic degradation of sulfosalicylic acid using TiO(2) microspheres
作者: Wang, Chuan1;  Zhang, Xianghua2;  Liu, Hong1;  Li, Xiangzhong3;  Li, Wenzhao2;  Xu, Hengyong2
关键词: Photocatalysis ;  Kinetics ;  Sulfosalicylic acid ;  TiO(2) microspheres
刊名: JOURNAL OF HAZARDOUS MATERIALS
发表日期: 2009-04-30
DOI: 10.1016/j.jhazmat.2008.07.064
卷: 163, 期:2-3, 页:1101-1106
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Life Sciences & Biomedicine
类目[WOS]: Engineering, Environmental ;  Engineering, Civil ;  Environmental Sciences
研究领域[WOS]: Engineering ;  Environmental Sciences & Ecology
英文摘要: The photocatalytic (PC) degradation kinetics of sulfosalicylic acid (SSA) at different pH using TiO(2) microspheres were elucidated by modeling. The resultant model had special consideration of adsorption and pH, The adsorption isotherms showed that the LC/MS(2)-identified intermediates were weakly adsorbed on the TiO(2) microspheres, thus their adsorption was neglected in the modeling. By contrast, the SSA was significantly adsorbed, thus its adsorption retained as an item in the model. Consequently, a non-first-order model was obtained. Through the modeling, it was elucidated that the reaction rate increased non-linearly with the SSA adsorption equilibrium constant. Meanwhile, it was elucidated that a pH increase favored the hydroxyl radical production to accelerate the SSA degradation, while impeded the SSA adsorption to slower it, hence a neutral pH caused the fastest SSA degradation. (C) 2008 Elsevier B.V. All rights reserved.
关键词[WOS]: VISIBLE-LIGHT IRRADIATION ;  WASTE-WATER TREATMENT ;  TITANIUM-DIOXIDE ;  SALICYLIC-ACID ;  ADSORPTION ;  DYE ;  PHOTODEGRADATION ;  DISPERSIONS ;  POLLUTANTS ;  OXIDATION
语种: 英语
WOS记录号: WOS:000264160000083
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141251
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China

Recommended Citation:
Wang, Chuan,Zhang, Xianghua,Liu, Hong,et al. Reaction kinetics of photocatalytic degradation of sulfosalicylic acid using TiO(2) microspheres[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,163(2-3):1101-1106.
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