Heterogeneous photochemical reaction of ozone with anthracene adsorbed on mineral dust
Heterogeneous photochemical reaction of ozone with anthracene adsorbed on mineral dust
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臭氧与矿尘吸附蒽的非均相光化学反应
DOI：
10.1016/j.atmosenv.2013.02.039
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发表时间：
2013-06
影响因子：
5
通讯作者：
He, Hong
中科院分区：
文献类型：
--
作者：
Ma, Jinzhu;Liu, Yongchun;Ma, Qingxin;Liu, Chang;He, Hong
在黑暗和有光的情况下，研究了O3与吸附在TiO 2和亚洲沙尘暴颗粒上的蒽的非均相反应。O3和吸附在TiO 2上的蒽之间的非均相反应的反应速率常数增加了1.5倍，在光的存在下相比，黑暗的条件下。在黑暗条件下，蒽与O3反应的主要表面产物是蒽醌，而在光照条件下，蒽醌与O3反应速度较快。蒽在亚洲沙尘暴颗粒物上的吸附反应符合准一级动力学，在黑暗和有光条件下，O3与亚洲沙尘暴颗粒物上吸附的蒽的反应均遵循Langmuir-Hinshelwood机理.在极高的臭氧浓度下，蒽的降解在有光的情况下比在黑暗条件下提高了3倍。
The heterogeneous reactions of O3with anthracene adsorbed on TiO2and on Asian dust storm particles were investigated in the dark and in the presence of light. The reaction rate constants of the heterogeneous reaction between O3and anthracene adsorbed on TiO2were increased by a factor of 1.5 in the presence of light compared to the dark conditions. Anthraquinone, which was identified as the main surface product of anthracene reacted with O3in the dark, can react with O3quickly in the presence of light. The reactions on Asian dust storm particles exhibited pseudo-first-order kinetics for anthracene loss, and the reactions between O3and anthracene adsorbed on Asian dust storm particles proceed by the Langmuir–Hinshelwood mechanism in the dark and in the presence of light. At extremely high ozone concentrations, the degradation of anthracene is enhanced by a factor of 3 in the presence of light compared to the dark conditions.
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影响因子：
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作者：
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