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浸渍提拉法制备改性氧化石墨烯光催化薄膜及其性能表征 预览

Preparation of photocatalytic modified graphene oxide thin film by dip coating and its characterization
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摘要 采用浸渍提拉法在玻璃基底上制备改性氧化石墨烯(GO)薄膜,研究了工艺条件对改性GO薄膜附着力的影响,通过扫描电镜和拉曼光谱对改性GO薄膜的微观形貌和结构进行表征,测试了可见光下改性GO薄膜对COD(化学需氧量)为54.35mg/L的城市污水的降解性能。结果发现,在GO质量浓度为1.0mg/mL,提拉(浸渍)速率为120mm/min,镀膜间隔为12s,镀膜次数为5次的条件下制得的改性GO薄膜具有最佳的附着力。改性GO薄膜具有良好的稳定性和可见光催化性能,24h的COD去除率可以达到70.6%,经15次重复使用后的COD去除率依然达到63.4%。 A modified graphene oxide(GO)thin film was formed on the glass substrate by dip coating method.The effects of process conditions on the adhesion strength of the thin film were studied.The microscopic morphology and structure of the modified GO film were characterized by scanning electron microscopy and Raman spectroscopy.The performance of the modified GO film on the photodegradation of a sewage containing54.35mg/L COD(chemical oxygen demand)under visible light was tested.The results showed that the modified GO film prepared by repeatedly dipping into a solution containing1mg/mL GO at a constant rate of120mm/min and pulling up at the same rate after an interval of12s for5times has the optimal adhesion strength.The modified GO film has good stability and photocatalytic property in that the COD removal rate reached70.6%within24h and still maintained as high as63.4%after15times of repeated use.
出处 《电镀与涂饰》 CSCD 北大核心 2018年第4期178-183,共6页 Electroplating & Finishing
关键词 氧化石墨烯 薄膜 浸渍提拉法 污水 可见光 光催化降解 化学需氧量 graphene oxide thin film dip coating sewage visible light photocatalytic degradation chemical oxygen demand
作者简介 顾皓辰(2000–),男,北京人,高三学生,通过“小科学家计划”参与了石墨烯材料及其薄膜制备与应用的研究。;通信作者:杨培燕,高级工程师,(E-mail) yangxiran2005@126.com。
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