新型NiFe2O4/埃洛石纳米复合材料的制备及其吸附性能的研究

陈芸霞1, 陈雪刚1*, 刘瑛2

化工新型材料 ›› 2018, Vol. 46 ›› Issue (7) : 283 -286.

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化工新型材料 ›› 2018, Vol. 46 ›› Issue (7) : 283-286.
开发与应用

新型NiFe2O4/埃洛石纳米复合材料的制备及其吸附性能的研究

    陈芸霞1, 陈雪刚1*, 刘瑛2
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Preparation and application in adsorption of NiFe2O4/halloysite nanocomposite

  • Chen Yunxia1, Chen Xuegang1, Liu Ying2
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摘要

借助金属油酸盐与埃洛石纳米管(HNTs)内壁的相互作用将铁酸镍(NiFe2O4)填充于HNTs内腔制成新型铁酸镍-埃洛石复合材料NiFe2O4/HNTs(NHNTs),并对NHNTs进行了表征,结果表明NiFe2O4成功填充至HNTs内腔。将NHNTs作为吸附剂吸附水溶液中的亚甲基蓝,并探究了吸附时间、pH对吸附效果的影响。NHNTs在吸附55min条件下能达到吸附平衡,偏碱性条件更利于对亚甲基蓝的吸附,NHNTs对亚甲基蓝的吸附与准二级动力学模型和Langmuir等温模型拟合较好,其最大吸附量为20.11mg/g,有较好的应用前景。

Abstract

A new kind of NiFe2O4-HNTs (NHNTs for short) nanocomposite was prepared by using metal oleat as precursor.The as-prepared material was characterized afterwards.The results showed that NiFe2O4 was successfully formed in the inner lumen of HNTs.Then NHNTs were applied to adsorb methylene blue (MB) from aqueous solutions.The effects of contact time and pH value were studied.The results showed that the adsorption equilibrium was established after 55 minutes.Alkaline condition was beneficial to the removal of MB.The adsorption processes fitted pseudo-second-order kinetic model and Langmuir isotherm perfectly.The maximum adsorption capacity of NHNTs was 20.11mg/g,which made NHNTs potential environmental friendly adsorbents for removing organic pollutants.

关键词

埃洛石 / 铁氧体 / 吸附 / 亚甲基蓝

Key words

halloysite / spinel ferrite / adsorption / methylene blue

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新型NiFe2O4/埃洛石纳米复合材料的制备及其吸附性能的研究[J]. 化工新型材料, 2018, 46(7): 283-286 DOI:

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