ZHAO Haiqian, GAO Jihui, ZHOU Wei, et al. Roles of varied radicals in NO oxidation by Fe2+/H2O2 system[J]. CIESC Journal, 2015, (1): 449-454. DOI: 10.11949/j.issn.0438-1157.20140976.
ZHAO Haiqian, GAO Jihui, ZHOU Wei, et al. Roles of varied radicals in NO oxidation by Fe2+/H2O2 system[J]. CIESC Journal, 2015, (1): 449-454. DOI: 10.11949/j.issn.0438-1157.20140976.DOI:
Fe2+/H2O2 system contains a variety of oxidizing free radicals
such as O2-·
·OH and HO2·. In this paper
the behaviors of O2-·
·OH and HO2· played in NO oxidation by Fe2+/H2O2 system were investigated experimentally. The results demonstrated that the ability oxidizing NO of O2-· was weak at the experimental conditions adopted by this paper
while ·OH and HO2· were the main active species for NO oxidation in Fe2+/H2O2 system
and the role of ·OH was more important. Acceleration of generating radical rate could not only promote the ability oxidizing NO gas of Fe2+/H2O2 system
but also accelerated O2 generation rate. Only a small amount of ·OH and HO2· participate in NO oxidation. In the process of NO oxidation by Fe2+/H2O2 system
the rapid reaction between ·OH and HO2· was the major reason of for low utilization of H2O2 (invalid decomposition).