| DOI: | 10.1016/j.atmosenv.2014.04.001
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| Scopus记录号: | 2-s2.0-84898491873
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| 论文题名: | Standardization methods for testing photo-catalytic air remediation materials: Problems and solution |
| 作者: | Ifang S; , Gallus M; , Liedtke S; , Kurtenbach R; , Wiesen P; , Kleffmann J
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| 刊名: | Atmospheric Environment
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| ISSN: | 0168-2563
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| EISSN: | 1573-515X
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| 出版年: | 2014
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| 卷: | 91 | | 起始页码: | 154
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| 结束页码: | 161
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| 语种: | 英语
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| 英文关键词: | Air quality
; Nitrogen oxides
; Photo-catalysis
; Standardization
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| Scopus关键词: | Air quality
; Atmospheric chemistry
; Materials testing
; Nitrogen oxides
; Pollution
; Standardization
; Surfaces
; Atmospheric conditions
; Atmospheric pollutants
; Experimental conditions
; Heterogeneous reactions
; Problems and Solutions
; Surface saturation
; TiO
; Transport limitations
; Catalyst activity
; nitrogen oxide
; air
; air quality
; article
; bioremediation
; catalyst
; chemical reaction kinetics
; chemoluminescence
; continuous stirred tank reactor
; controlled study
; decomposition
; degradation
; environmental impact
; ion pair chromatography
; limit of detection
; materials testing
; maximum allowable concentration
; priority journal
; reaction time
; standardization
; ultraviolet radiation
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| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
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| 英文摘要: | In the present study, problems of different methods used for quantifying the air remediation activity of photo-catalytic active surfaces are described. It is demonstrated that in bed photo-reactors (e.g. ISO), transport limitations can lead to underestimation of the activity, if fast heterogeneous reactions are investigated. In contrast, in stirred tank photo-reactors (e.g. UNI), complex secondary chemistry may lead to an overestimation of the photo-catalytic remediation of NOx, if NO2 is also present. In addition, the quantities, used for ranking the photo-catalytic air remediation activity in the different methods are not independent of the applied experimental conditions, and thus, make any intercomparison between the different methods or the extrapolation to atmospheric conditions very difficult. Furthermore, unrealistic high NOx levels are used, for which the chemical kinetics may already be affected by surface saturation problems. Finally, it is shown that the use of only nitrogen monoxide (NO) will not enable users to judge about the quality and effectiveness of a photo-catalytic surface for improving air quality, since surfaces which are active toward NO may be completely non-reactive toward other important atmospheric pollutants. A modified method for quantifying the air remediation activity of photo-catalytic surfaces is proposed here to overcome these problems. © 2014 Elsevier Ltd. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/81203
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Physikalische and Theoretische Chemie, FB C, Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal, Germany
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| Recommended Citation: | |
Ifang S,, Gallus M,, Liedtke S,et al. Standardization methods for testing photo-catalytic air remediation materials: Problems and solution[J]. Atmospheric Environment,2014-01-01,91
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