摘要
利用聚乙烯吡咯烷酮(PVP)和石墨烯与染料分子的结合特性,合成了PVP功能化石墨烯纳米材料(PVPGNs),对其进行了表征,并考察该材料对水中酸性红(ASG)和孔雀石绿(MG)等染料的吸附能力。结果表明,当pH为7、温度为40℃、时间为10 min、材料的质量浓度1 g/L时,ASG的最大吸附率达到93.41%,最大吸附量达到93.41 mg/g;当pH为5、温度为40℃、时间为10 min、材料用量0.5 m L,材料的质量浓度1 g/L时,MG的最大吸附率达到83.38%,最大吸附量达到83.38 mg/g。等温吸附模型的拟合结果表明,PVP-GNs对ASG和MG的理论最大吸附量分别达到1 887、1 976 mg/g。且PVP-GNs具备良好的染料脱附性能。因此,该材料在染料废水脱色方面具有很大的应用潜力与价值。
Polyvinylpyrrolidone(PVP) functionalized graphene nanomaterials(PVP-GNs) were synthesized by adsorption properties of dyes with PVP and graphene, it was characterized and the adsorption capacity of acid red(ASG) and malachite green(MG) was investigated. The results showed that,when the pH, temperature, time, the material amount and material mass concentration was 7, 40 ℃, 10 min, 0.5 mL and 1 g/L respectively, the maximum adsorption rate of ASG reached 93.41%, and maximum adsorption capacity reached 93.41 mg/g;When the pH, temperature, time, the material amount and material concentration was 5, 40 ℃, 10 min, 0.5 mL and 1 g/L, the maximum adsorption rate of MG reached 83.38%, and maximum adsorption capacity reached 83.38 mg/g. This fitting results of isothermal adsorption model showed that the theoretical maximum adsorption capacity of PVP-GNs for ASG and MG reached 1 887 and 1 976 mg/g. The PVP-GNs showed that it has good dye desorption properties. Therefore, the material has great potential in decolorization of dye wastewater.
作者
韩丽君
刘志广
郭玉晶
HAN Lijun;LIU Zhiguang;GUO Yujing(School of Environment and Resourses,Shanxi University,Taiyuan 030006,China;Institute of Environmental Science,Shanxi University,Taiyuan 030006,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2019年第3期48-54,共7页
Technology of Water Treatment
基金
国家自然科学基金(21775095)
山西省青年三晋学者项目(2016)
作者简介
韩丽君(1993-),女,硕士研究生,研究方向为水污染处理,联系电话:18835127521,电子邮件:18835127521@163.com;通讯作者:郭玉晶,教授,电子邮件:guoyj@sxu.edu.cn。
