Investigation on Photocatalytic Oxidation Degradation of n-C7H16 over ZnO Ultrafine Particles

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (5): 871.

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Investigation on Photocatalytic Oxidation Degradation of n-C₇H₁₆ over ZnO Ultrafine Particles

JING Li-Qiang¹, XU Zi-Li², DU Yao-Guo², SUN Xiao-Jun¹, WANG Ling³, ZHOU Xiu-Qing³, SHAN Hong-Yan³, CAI Wei-Min¹

1. Department of Environmental Sciences and Engineering, Harbin University of Technology, 150001, China;
2. Department of Environmental Sciences and Engineering;
3. Analysis Testing and Experimental Center, Jilin University, Changchun 130023, China

Received:2001-04-16 Online:2002-05-24 Published:2002-05-24

Abstract

Abstract: The degradation of gas-phase n-C₇H₁₆ by the technique of photocatalytic oxidation on ZnO wasinvestigated.It was found that under a certain condition of reaction, the photocatalytic oxidation degrada-tion rate of n-C₇H₁₆ on ZnO ultrafine particles (UFP) was higher.The influences of some factors such as O₂ volume fraction and H₂O(g) volume fraction on photocatalytic oxidation of n-C₇H₁₆ were studied.The gascomposition during photocatalytic oxidation of n-C₇H₁₆ was qualitatively analyzed by using gas chromatog-raphy (GC ) and gas chromatogram-mass spectrum (GC-MS), and the principal intermediate product,propanal, was quantitatively analyzed, which could demonstrate that the most part of n-C₇H₁₆ degraded byphotocatalytic oxidation on ZnOwas oxided to CO₂. In addition, the kinetics and mechanism of photo-catalytic oxidation reaction of n-C₇H₁₆ were also probed into.

Key words: n-C₇H₁₆, ZnO, Ultrafine particles, Photocatalytic oxidation, Kinetics and mechanism

CLC Number:

O643

TrendMD:

JING Li-Qiang, XU Zi-Li, DU Yao-Guo, SUN Xiao-Jun, WANG Ling, ZHOU Xiu-Qing, SHAN Hong-Yan, CAI Wei-Min. Investigation on Photocatalytic Oxidation Degradation of n-C₇H₁₆ over ZnO Ultrafine Particles[J]. Chem. J. Chinese Universities, 2002, 23(5): 871.

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Investigation on Photocatalytic Oxidation Degradation of n-C₇H₁₆ over ZnO Ultrafine Particles

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