摘要
氧化石墨烯(GO)进入水环境后,由于其具有光吸收特性在光照条件下会发生转化改变其表面特性,从而影响其对有机污染物的吸附性能。采用氙灯模拟太阳光照,得到光致还原氧化石墨烯(PGO),使用扫描电子显微镜、元素分析仪和Zeta电位仪对光照前后材料进行了表征,结果表明光照使PGO褶皱变多且含氧官能团减少。并探讨了PGO对不同取代基的多环芳烃衍生物(SPAHs)吸附情况。光照改变了PGO的表面特性并增加其对SPAHs的吸附位点,使PGO对SPAHs的吸附能力强于GO。SPAHs在GO和PGO上的吸附强弱顺序为1-萘胺>1-萘酚>4-硝基-1-萘酚>1-萘甲醇,并详细分析了不同取代基对SPAHs的吸附影响。
After graphene oxide(GO) exposure in aquatic environment, due to its light absorption properties, it will be affected by light and undergo photochemical conversion.The surface properties of GO will alter during transformation, thus affecting the its adsorption behavior toward organic pollutants.In this study, a xenon lamp was used to simulate sunlight to obtain photo-reduced graphene oxide(PGO).Scanning electron microscope, element analyzer and Zeta potential meter were used to characterize the materials before and after the irradiation.The results showed that light caused more folds and reduced oxygen-containing functional groups.The adsorptions of polycyclic aromatic hydrocarbons derivatives(SPAHs) with different substituents on PGO were also discussed.Illumination changed the surface characteristics of PGO and increased its adsorption sites for SPAHs, making the adsorption capacity of PGO to SPAHs stronger than that of GO.The order of the adsorption capacity of SPAHs on GO and PGO was: 1-naphthylamine>1-naphthol>4-nitro-1-naphthol>1-naphthalenemethanol.The effects of different substituents on the adsorption of SPAHs were analyzed in detail.
作者
徐世敏
李建成
王驰
李凯
梅毅
Xu Shimin;Li Jiancheng;Wang Chi;Li Kai;Mei Yi(School of Chemical Engineering,Kunming University of Science and Technology,Kunming 650504;Yunnan Provincial Key Laboratory of Phosphorus Chemical Industry Energy Conservation and New Phosphorus Materials,Kunming 650504;Yunnan Provincial Institute of Phosphorus Chemical Engineering,Kunming 650504;School of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650504)
出处
《化工新型材料》
CAS
CSCD
北大核心
2023年第2期177-183,共7页
New Chemical Materials
基金
国家自然科学基金(41807373)
云南省“万人计划”青年拔尖人才项目资助(109720200031)。
关键词
光致还原氧化石墨烯
多环芳烃衍生物
吸附
photo-reduced graphene oxide(PGO)
substituted polycyclic aromatic hydrocarbons(SPAHs)
adsorption
作者简介
徐世敏(1996-),女,硕士研究生,研究方向为氧化石墨烯材料环境行为研究,E-mail:2399675275@qq.com;通讯作者:王驰,副教授,硕士研究生导师,主要从事纳米材料环境行为和风险研究,E-mail:wangchikg@163.com。
