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磁性还原石墨烯的制备及其对抗生素的吸附性能

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李亚娟, 赵传起, 洪沛东, 王园园, 杨悦锁. 磁性还原石墨烯的制备及其对抗生素的吸附性能[J]. 环境工程学报, 2018, 12(1): 15-24. doi: 10.12030/j.cjee.201705157
引用本文: 李亚娟, 赵传起, 洪沛东, 王园园, 杨悦锁. 磁性还原石墨烯的制备及其对抗生素的吸附性能[J]. 环境工程学报, 2018, 12(1): 15-24. doi: 10.12030/j.cjee.201705157
shu
LI Yajuan, ZHAO Chuanqi, HONG Peidong, WANG Yuanyuan, YANG Yuesuo. Fabrication of magnetic reduced graphene and its adsorption performance for antibiotics[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 15-24. doi: 10.12030/j.cjee.201705157
Citation: LI Yajuan, ZHAO Chuanqi, HONG Peidong, WANG Yuanyuan, YANG Yuesuo. Fabrication of magnetic reduced graphene and its adsorption performance for antibiotics[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 15-24. doi: 10.12030/j.cjee.201705157
shu

磁性还原石墨烯的制备及其对抗生素的吸附性能

  • 1.

    沈阳大学环境学院,区域污染环境生态修复教育部重点实验室,沈阳110044

  • 2.

    吉林大学地下水资源与环境教育部重点实验室,长春130021

  • 基金项目:

    国家自然科学基金资助项目(41472237)

    教育部重点实验室开放基金资助项目(KLIEEE-15-06)

    辽宁省博士启动基金资助项目(201601214)

Fabrication of magnetic reduced graphene and its adsorption performance for antibiotics

  • 1.

    Key Laboratory of Eco-Restoration of Regional Contaminated Environment, Ministry of Education, College of the Environment, Shenyang University, Shenyang 110044, China

  • 2.

    Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China

  • Fund Project:

  • 摘要: 针对日益突出的抗生素水污染问题,利用共沉淀法制备磁性还原石墨烯(rGO/Fe3O4),并研究其对污染物去除性能。通过考察pH、吸附时间、污染物浓度等影响因素,研究rGO/Fe3O4对四环素(TC)和磺胺嘧啶(SDZ)2种典型抗生素的吸附性能,并分析吸附机理。实验结果表明:rGO/Fe3O4对2种抗生素具有很好的吸附能力,对TC和SDZ的最佳吸附pH分别在4.0和5.0左右,对应的最佳吸附量分别达到(114.29±1.60)和(20.64±2.17)mg·g-1；对TC的吸附效果要好于SDZ。rGO/Fe3O4对2种抗生素污染物的吸附更符合准二级反应模型,表明吸附过程是由化学反应控制,而不是物理扩散控制,通过计算可知,TC的吸附速度要快于吸附SDZ。rGO/Fe3O4对TC和SDZ的吸附过程更接近 Langmuir 吸附等温方程,模拟的最大吸附量分别为123.46和28.49 mg·g-1,与实测值很吻合。rGO/Fe3O4具有优良的磁性分离效果,可以快速完成与液相污染物的分离；对rGO/Fe3O4吸附2种抗生素的机理主要包括π-π共轭作用、氢键作用、静电作用以及范德华力等,这些作用力使rGO/Fe3O4对抗生素具有优良的吸附性能。
    Abstract: To solve significant problem of antibiotics pollution in aquatic environments, the magnetic reduction graphene (rGO/Fe3O4) was fabricated via coprecipitation method which was then used to study the removal of antibiotics pollution. The impact of pH, adsorption time and concentrations of antibiotics were investigated to evaluate the adsorption performances and mechanism of rGO/Fe3O4 for tetracycline (TC) and sulfadiazine (SDZ) as two typical contaminants. The experimental results showed that rGO/Fe3O4 was a potential effective absorbent for TC and SDZ, and the best adsorption pH were around 4.0 and 5.0 with the corresponding adsorption capacity of (114.29±1.60) and (20.64±2.17)mg·g-1, respectively. The TC was better absorbed on rGO/Fe3O4 than SDZ. The kinetics of adsorption fitted pseudo-second-order model perfectly, which indicated that the adsorption of both antibiotics was governed by chemical reactions, rather than physical diffusion. The adsorption of TC was faster than SDZ through calculation. The adsorption isotherm fitted Langmuir model well, and the theoretical maxima of adsorption capacities were 123.46 and 28.49 mg·g-1, respectively, which closely agreed with the measured data. The rGO/Fe3O4 possessed a good magmatic separation that was realized rapidly. The antibiotics strongly deposited on the rGO/Fe3O4 surface via π-π interaction, hydrogen bonding, electrostatic and van der Waals force, making the rGO/Fe3O4 more suitable for removal of antibiotics.
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  • 刊出日期:  2018-01-14
李亚娟, 赵传起, 洪沛东, 王园园, 杨悦锁. 磁性还原石墨烯的制备及其对抗生素的吸附性能[J]. 环境工程学报, 2018, 12(1): 15-24. doi: 10.12030/j.cjee.201705157
引用本文: 李亚娟, 赵传起, 洪沛东, 王园园, 杨悦锁. 磁性还原石墨烯的制备及其对抗生素的吸附性能[J]. 环境工程学报, 2018, 12(1): 15-24. doi: 10.12030/j.cjee.201705157
shu
LI Yajuan, ZHAO Chuanqi, HONG Peidong, WANG Yuanyuan, YANG Yuesuo. Fabrication of magnetic reduced graphene and its adsorption performance for antibiotics[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 15-24. doi: 10.12030/j.cjee.201705157
Citation: LI Yajuan, ZHAO Chuanqi, HONG Peidong, WANG Yuanyuan, YANG Yuesuo. Fabrication of magnetic reduced graphene and its adsorption performance for antibiotics[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 15-24. doi: 10.12030/j.cjee.201705157
shu

磁性还原石墨烯的制备及其对抗生素的吸附性能

  • 1. 沈阳大学环境学院,区域污染环境生态修复教育部重点实验室,沈阳110044
  • 2. 吉林大学地下水资源与环境教育部重点实验室,长春130021
基金项目:

国家自然科学基金资助项目(41472237)

教育部重点实验室开放基金资助项目(KLIEEE-15-06)

辽宁省博士启动基金资助项目(201601214)

摘要: 针对日益突出的抗生素水污染问题,利用共沉淀法制备磁性还原石墨烯(rGO/Fe3O4),并研究其对污染物去除性能。通过考察pH、吸附时间、污染物浓度等影响因素,研究rGO/Fe3O4对四环素(TC)和磺胺嘧啶(SDZ)2种典型抗生素的吸附性能,并分析吸附机理。实验结果表明:rGO/Fe3O4对2种抗生素具有很好的吸附能力,对TC和SDZ的最佳吸附pH分别在4.0和5.0左右,对应的最佳吸附量分别达到(114.29±1.60)和(20.64±2.17)mg·g-1；对TC的吸附效果要好于SDZ。rGO/Fe3O4对2种抗生素污染物的吸附更符合准二级反应模型,表明吸附过程是由化学反应控制,而不是物理扩散控制,通过计算可知,TC的吸附速度要快于吸附SDZ。rGO/Fe3O4对TC和SDZ的吸附过程更接近 Langmuir 吸附等温方程,模拟的最大吸附量分别为123.46和28.49 mg·g-1,与实测值很吻合。rGO/Fe3O4具有优良的磁性分离效果,可以快速完成与液相污染物的分离；对rGO/Fe3O4吸附2种抗生素的机理主要包括π-π共轭作用、氢键作用、静电作用以及范德华力等,这些作用力使rGO/Fe3O4对抗生素具有优良的吸附性能。

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