纳米Co3O4催化剂辅助大气压DBD等离子体对甲基橙染料降解研究

黄俊; 陈光良; 司晓蕾; 陈致力; 徐慧敏

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Nano-Co3O4 catalyst enhanced the O2/Ar DBD plasma for MO dye degradation

首发时间：2014-11-10

HUANG Jun ¹
Huang Jun(1989-), Male, Master Degree Candidate, Main research: The new functional Material
CHEN Guangliang ¹
Chen Guangliang, Male, Associate Professor, Graduate tutor, Main research: The low temperature plasma technology
SI Xiaolei ¹ CHEN Zhili ¹ XU Huimin ¹

1、College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China

Abstract：In this paper, the effects of nanosized Co3O4 catalyst and O2/Ar plasma on methyl orange (MO) degradation were studied. The properties of Co3O4 nanoparticals (NPs) were analyzed by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and UV-vis spectroscopy. The experimental results showed that the average diameter of fabricated Co3O4 nanoparticals was about 40 nm, and the nanosized Co3O4 particles mainly exposed (311) and (220) active planes. Under the function of Co3O4 catalyst, 88.9% of MO could be removed in the DBD plasma system within 18 min, and the degradation efficiencies were far higher than those observed in photocatalytic system (3%) and in plasma system (71.0%). The simulated degradation rate constant (kα) of O2/Ar plasma with Co3O4 catalyst was 0.1 min-1, and this value was about 50 and 1.43 times higher than those in photocatalytic and plasma processes. In addition, with the increase of oxygen flow rate ( from 0.09 to 0.21 m3/h) and mass of Co3O4 catalyst (from 0.06 to 0.16 g), the degradation efficiency of DBD plasma was increased by 7.8% and 28.5%, respectively. Meanwhile, the possible oxidation mechanism and degradation pathways of MO dye by the plasma and Co3O4 NPs were proposed.

keywords： DBD plasma Co3O4 NPs methyl orange degradation mechanism

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纳米Co3O4催化剂辅助大气压DBD等离子体对甲基橙染料降解研究

黄俊 ¹
Huang Jun(1989-), Male, Master Degree Candidate, Main research: The new functional Material
陈光良 ¹
Chen Guangliang, Male, Associate Professor, Graduate tutor, Main research: The low temperature plasma technology
司晓蕾 ¹ 陈致力 ¹ 徐慧敏 ¹

1、浙江理工大学材料与纺织学院，杭州 310018

摘要：本文研究了纳米Co3O4催化剂辅助O2/Ar DBD等离子体降解甲基橙溶液的影响因素。通过X射线衍射(XRD)、扫描电子显微镜(SEM)和透射电镜(TEM)等手段分析了Co3O4催化剂的结构特点，并利用紫外光谱仪测试了其辅助等离子体降解的效果。实验结果表明成功制备出的Co3O4纳米粒子大约在40nm左右，并且与等离子体结合使用将甲基橙的降解率提高到了88.9%，远远高于单独使用等离子体紫外光辐射(3%)和等离子体尾流气体(71.0%)的降解效率。另外，提高O2的流量以及增加Co3O4催化剂的量分别使甲基橙的降解率提升了7.8%和28.5%。最后，根据键能以及质谱分析得出了等离子体讲解甲基橙的降解机理以及可能的降解过程。

关键词：纳米Co3O4催化剂 DBD等离子体甲基橙溶液降解机理

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HUANG Jun,CHEN Guangliang,SI Xiaolei,et al. Nano-Co3O4 catalyst enhanced the O2/Ar DBD plasma for MO dye degradation[EB/OL]. Beijing:Sciencepaper Online[2014-11-10]. https://www.paper.edu.cn/releasepaper/content/201411-147.

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论文编号	201411-147
论文题目	纳米Co3O4催化剂辅助大气压DBD等离子体对甲基橙染料降解研究
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