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首页> 外文期刊>RSC Advances >Adsorption of Cu2+ and Cd2+ from aqueous solution by novel electrospun poly(vinyl alcohol)/graphene oxide nanofibers
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Adsorption of Cu2+ and Cd2+ from aqueous solution by novel electrospun poly(vinyl alcohol)/graphene oxide nanofibers

机译：通过新型电纺 - 聚（乙烯醇）/石墨烯氧化物水溶液从水溶液中吸附Cu2 +和CD2 +

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摘要

Novel poly(vinyl alcohol)/graphene oxide (PVA/GO) nanofibers were fabricated by electrospinning and applied to remove Cu2+ and Cd2+ from aqueous solution. The adsorption performances of the PVA/GO nanofibers were investigated by removing Cu2+ and Cd2+. The results showed that the adsorption of Cu2+ and Cd2+ onto PVA/GO nanofibers increased as the pH was increasing, but only slightly reduced with the increasing of ionic strength. The adsorption could reach equilibrium within 25 min and the experimental kinetic data followed the pseudo-second-order kinetic model. The equilibrium adsorption data can be well fitted with the Langmuir model. The thermodynamic parameters calculated from adsorption isotherms at four different temperatures indicated that the adsorption processes were endothermic and spontaneous. The PVA/GO nanofibers have good regeneration ability and can be recycled 8 times with a small amount of loss in adsorption efficiency. FTIR and XPS results indicated that the carboxyl and the carbonyl groups of GO on the surface of the nanofibers mainly participated in the adsorption of Cu2+ and Cd2+.
机译：新颖聚（乙烯醇）/石墨烯氧化物（PVA / GO）纳米纤维通过静电制造并应用于从水溶液除去铜+和Cd2 +。的PVA / GO纳米纤维的吸附性能通过除去铜+和Cd2 +的影响。结果表明，铜离子和Cd2 +的吸附到PVA / GO纳米纤维随着pH值增加，但只用的离子强度增加略有降低。吸附可在25分钟内达到平衡和实验的动力学数据符合准二级动力学模型。平衡吸附数据能够很好地装配有Langmuir模型。在四个不同的温度下从吸附等温线计算出的热力学参数表明，吸附过程是吸热和自发的。的PVA / GO纳米纤维具有良好的再生能力，并且可以与在吸附效率损失少量再循环的8倍。 FTIR和XPS结果表明，羧基和GO的纳米纤维的表面上的羰基基团主要参与铜+和Cd2 +的吸附。

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  • 来源
    《RSC Advances》 |2016年第83期|共10页
  • 作者

    Tan Ping; Wen Junjie; Hu Yongyou; Tan Xiaojun;

  • 作者单位

    South China Univ Technol Coll Environm &

    Energy Key Lab Pollut Control &

    Ecol Remediat Ind Agglom Minist Educ Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Coll Environm &

    Energy Key Lab Pollut Control &

    Ecol Remediat Ind Agglom Minist Educ Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Coll Environm &

    Energy Key Lab Pollut Control &

    Ecol Remediat Ind Agglom Minist Educ Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Coll Environm &

    Energy Key Lab Pollut Control &

    Ecol Remediat Ind Agglom Minist Educ Guangzhou 510006 Guangdong Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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