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首页> 外文期刊>Journal of Hazardous Materials >Chlorobenzene degeradation by non-thermal plasma combined with EG-TiO2/ZnO as a photocatalyst: Effect of photocatalyst on CO2 selectivity and byproducts reduction
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Chlorobenzene degeradation by non-thermal plasma combined with EG-TiO2/ZnO as a photocatalyst: Effect of photocatalyst on CO2 selectivity and byproducts reduction

机译：非热等离子体结合EG-TiO2 / ZnO作为光催化剂对氯苯进行脱菌作用：光催化剂对CO2选择性和副产物还原的影响

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摘要

The non-thermal plasma (NTP) technique, which suffers from low selectivity in complete oxidation of volatile organic compounds to CO2 and H2O, creates unwanted and harmful byproducts. NTP in concert with photocatalyst can resolve this limitation due to additional oxidation. TiO2 and ZnO nanoparticles were coated on the surface of the expanded graphite and placed downstream of the NTP reactor under UV light. In this study, to compare the performance of NTP and the combined system, chlorobenzene removal, selectivity of CO2 and byproducts formation were investigated. The results showed that the combined system enhanced both the removal efficiency and CO2 selectivity. The output gas of the NTP reactor contained chlorobenzene, phosgene, O-3, NO, NO2, CO, CO2, HCL and CL. The bulk of these byproducts was oxidized on the surface of the nanocomposite; as a result, the content of the byproducts in the output gas of the combined system decreased dramatically. The removal efficiency and CO2 selectivity increased by rising the applied voltage and residence time because the collision between active species and pollutant molecules increases. Based on these results, the combined system is preferred due to a higher performance and lower formation of harmful byproducts. (C) 2016 Elsevier B.V. All rights reserved.
机译：非热等离子体（NTP）技术在将挥发性有机化合物完全氧化为CO2和H2O时具有较低的选择性，因此会产生有害的有害副产物。由于额外的氧化作用，NTP与光催化剂一起可以解决此限制。将TiO 2和ZnO纳米颗粒涂覆在膨胀石墨的表面上，并在紫外光下置于NTP反应器的下游。在这项研究中，为了比较NTP和组合系统的性能，研究了氯苯的去除，CO2的选择性和副产物的形成。结果表明，该组合系统提高了去除效率和CO 2选择性。 NTP反应器的输出气体包含氯苯，光气，O-3，NO，NO2，CO，CO2，HCL和CL。这些副产物的大部分在纳米复合材料的表面上被氧化。结果，组合系统的输出气体中副产物的含量急剧下降。由于活性物质和污染物分子之间的碰撞增加，去除效率和CO 2选择性通过增加施加电压和停留时间而增加。基于这些结果，由于较高的性能和较少的有害副产物形成，因此优选组合系统。 （C）2016 Elsevier B.V.保留所有权利。

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