Abstract Nickel oxide and pyrite (NiO/Pyr) composites were prepared by impregnation method and employed in the dielectric barrier discharge (DBD) catalytic removal of gaseous styrene. The properties of the NiO/Pyr composites were characterized systematically. The removal efficiencies of styrene and energy yields had been examined as a function of initial concentration of styrene, gas flow rates and input powers. The results showed that the NiO/Pyr composite had excellent catalytic performance in DBD removal of gaseous styrene while mass ratio of NiO and Pyr was 0.2 and calcined temperature was 500 °C. When the initial concentration of styrene was 240 mg m−3, DBD combined with the NiO/Pyr composite could improve the removal and mineralization efficiency from 89.9% to 69%–98.6% and 78.5%, respectively, as compared with bare DBD system. The possible removal pathways were proposed based on the product identification by FTIR and GC-MS.

中文翻译：

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DBD结合NiO/黄铁矿复合材料催化去除气态苯乙烯

摘要 采用浸渍法制备了氧化镍和黄铁矿（NiO/Pyr）复合材料，用于介电阻挡放电（DBD）催化去除气态苯乙烯。NiO/Pyr 复合材料的性能被系统地表征。作为苯乙烯初始浓度、气体流速和输入功率的函数，已经检验了苯乙烯的去除效率和能量产率。结果表明,NiO/Pyr复合材料在NiO和Pyr的质量比为0.2、煅烧温度为500 ℃时对DBD去除气态苯乙烯具有优异的催化性能。当苯乙烯的初始浓度为 240 mg m−3 时，与裸 DBD 系统相比，DBD 与 NiO/Pyr 复合材料的去除和矿化效率分别从 89.9% 提高到 69%–98.6% 和 78.5%。