| 引用本文: | 牟铭,顾宝珊,刘洋洋,杨培燕,张启富,赵皓琦.氧化石墨烯/H2O2可见光催化性能影响因素[J].材料科学与工艺,2019,27(5):78-83.DOI:10.11951/j.issn.1005-0299.20180173. |
| MU Ming,GU Baoshan,LIU Yangyang,YANG Peiyan,ZHANG Qifu,ZHAO Haoqi.Influencing factors of photocatalytic property of graphene oxide/H2O2 under visible light irradiation[J].Materials Science and Technology,2019,27(5):78-83.DOI:10.11951/j.issn.1005-0299.20180173. |
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| 摘要: |
| 为了研究氧化石墨烯/H2O2可见光催化处理含难降解有机物废水影响因素，用改进的Hummers法制备了氧化石墨烯(GO)，通过扫描电镜(SEM)、电子能谱(EDS)、拉曼光谱对GO的微观形貌、成分及结构进行了表征.以甲基橙(MO)为难降解有机物代表，通过改变光照、pH值以及GO的量探究了不同条件对GO/H2O2复合试剂降解甲基橙的光催化效果.研究表明：GO/H2O2复合试剂可以通过光催化产生羟基自由基降解污染物，通过改变光照、pH值及GO的量增加自由基含量可提升催化效果; 采用GO/H2O2复合试剂比单独使用H2O2在48 h内对甲基橙的降解率可提高79.09%(pH=2).用改良的Hummers法制备GO成本较低，采用GO/H2O2复合试剂光催化降解甲基橙时，GO用量较少，且不产生危险废弃物，为实际应用中处理难降解有机物污水提供了一个绿色环保、节能高效的思路. |
| 关键词: 氧化石墨烯 甲基橙 光催化 难降解有机物废水 降解 污染 |
| DOI：10.11951/j.issn.1005-0299.20180173 |
| 分类号:TB34 |
| 文献标识码:A |
| 基金项目: |
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| Influencing factors of photocatalytic property of graphene oxide/H2O2 under visible light irradiation |
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MU Ming, GU Baoshan, LIU Yangyang, YANG Peiyan, ZHANG Qifu, ZHAO Haoqi
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(National Engineering Laboratory for Advanced Coatings Technology of Metal Materials, China Iron and Steel Research Institute Group, Beijing 100081, China)
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| Abstract: |
| To investigate the influencing factors of photocatalytic treatment of wastewater containing refractory organic compounds under visible light irradiation by using graphene oxide/H2O2, graphene oxide(GO) was prepared by a modified Hummers method, and the morphology, composition and structure of the graphene were characterized by scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and Raman spectroscopy. Methyl orange (MO) was used as a representative of refractory organic compounds.The photocatalytic ability of GO/H2O2 composite reagents for MO was studied by varying the light, pH and addition of GO. The results shows that hydroxyl radicals can be produced by GO/H2O2 composite reagents and catalytic effects can be improved by changing the light, pH and addition of GO to increase hydroxyl radicals, the degradation rate of methyl orange by GO/H2O2 composite reagentsis 79.09% (pH=2)higher than that of H2O2 alone after 48 h.The cost of preparing GO by a modified Hummers method is low, and the dosage of GO is little, the hazardous waste is not produced while degrading MO by GO/H2O2 composite reagents, which provides an environment-friendly, energy-saving and efficient idea for remedying water polluted by refractory organics in practice. |
| Key words: graphene oxide methyl orange photocatalysis refractory organic wastewater pollution degradation |
