Structural and hygroscopic changes of soot during heterogeneous reaction with O3
作者： Yongchun Liu , Chang Liu , Jinzhu Ma , Qingxin Ma , Hong He
DOI: 10.1039/C0CP00402B
关键词:
摘要: Soot aerosols are ubiquitous in the atmosphere and play an important role global regional radiative balance climate. Their environmental impact, however, greatly depends on their structure, composition, particle size, morphology. In this study, structural changes of a model soot (Printex U) during heterogeneous reaction with 80 ppm O3 at 298 K were investigated using situ Raman spectroscopy, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), transmission electron microscopy (TEM). Hygroscopic due to also studied by water sorption analyzer. The consumption amorphous carbon (D3 band) disordered graphitic lattice (D4 ozonization was confirmed decrease full widths half maximum relative integrated intensities (percentages areas). Oxygen containing surface species including ketone, lactone, anhydride observed IR spectra ozonized soot. showed more compacted aggregates smaller average diameter primary particles (29.9 ± 7.7 nm) larger fractal dimension (1.81 0.08) when compared fresh (36.9 9.4 nm, 1.61 0.10). leads enhancement hygroscopicity formation oxygen species.
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R. Zhang, A. F. Khalizov, J. Pagels, D. Zhang, H. Xue, P. H. McMurry, Variability in morphology, hygroscopicity, and optical properties of soot aerosols during atmospheric processing Proceedings of the National Academy of Sciences of the United States of America. ,vol. 105, pp. 10291- 10296 ,(2008) , 10.1073/PNAS.0804860105
Qingxin Ma, Yongchun Liu, Hong He, None, The Utilization of Physisorption Analyzer for Studying the Hygroscopic Properties of Atmospheric Relevant Particles Journal of Physical Chemistry A. ,vol. 114, pp. 4232- 4237 ,(2010) , 10.1021/JP909340V
E. Weingartner, H. Burtscher, U. Baltensperger, Hygroscopic properties of carbon and diesel soot particles Atmospheric Environment. ,vol. 31, pp. 2311- 2327 ,(1997) , 10.1016/S1352-2310(97)00023-X
A. C. Ferrari, J. Robertson, Interpretation of Raman spectra of disordered and amorphous carbon Physical Review B. ,vol. 61, pp. 14095- 14107 ,(2000) , 10.1103/PHYSREVB.61.14095
D. M. SMITH, A. R. CHUGHTAI, Photochemical Effects in the Heterogeneous Reaction of Soot with Ozone at Low Concentrations Journal of Atmospheric Chemistry. ,vol. 26, pp. 77- 91 ,(1997) , 10.1023/A:1005702818675
A. R. Chughtai, J. M. Kim, D. M. Smith, The Effect of Temperature and Humidity on the Reaction of Ozone with Combustion Soot: Implications for Reactivity near the Tropopause Journal of Atmospheric Chemistry. ,vol. 45, pp. 231- 243 ,(2003) , 10.1023/A:1024250505886
Mark Z. Jacobson, Strong radiative heating due to the mixing state of black carbon in atmospheric aerosols Nature. ,vol. 409, pp. 695- 697 ,(2001) , 10.1038/35055518
Sabine Seisel, Yu Lian, Thorsten Keil, Maxim E. Trukhin, Reinhard Zellner, Kinetics of the interaction of water vapour with mineral dust and soot surfaces at T=298 K Physical Chemistry Chemical Physics. ,vol. 6, pp. 1926- 1932 ,(2004) , 10.1039/B314568A
William L Chameides, Michael Bergin, Soot Takes Center Stage Science. ,vol. 297, pp. 2214- 2215 ,(2002) , 10.1126/SCIENCE.1076866
John PA Neeft, Michiel Makkee, Jacob A Moulijn, Catalytic oxidation of carbon black--I. Activity of catalysts and classification of oxidation profiles Fuel. ,vol. 77, pp. 111- 119 ,(1998) , 10.1016/S0016-2361(97)00187-7