Page 140 - 《精细化工》2020年第7期

第 37 卷第 7 期 精 细 化 工 Vol.37, No.7
202 0 年 7 月 FINE CHEMICALS July 2020

功能材料
Fe O @ABc 复合材料的制备及其对水中甲基橙的吸附
3
4

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王向辉，石建军，游诚航，颜慧琼，史载锋，林 强
（海南省水环境污染治理与资源化重点实验室，海口市土壤污染修复与资源化重点实验室，海南师范大学 化学
与化工学院，海南 海口 571158）

摘要：以 Fe 3 O 4 纳米粒子和海藻生物质炭（ABc）为原料，采用共沉淀法制备了磁性海藻生物质炭（Fe 3 O 4 @ABc）
复合材料，并用于甲基橙（MO）的吸附。通过 XRD、SEM、TEM、FTIR 和 VSM 对 Fe 3 O 4 @ABc 复合材料进
行了表征。考察了溶液 pH、吸附剂添加量对 MO 吸附性能的影响，并进行了吸附动力学和等温吸附模型拟合。
结果表明，Fe 3 O 4 纳米粒子成功复合到 ABc 表面，Fe 3 O 4 @ABc 复合材料具有超顺磁性，在外在磁场的作用下能
2
够快速分离；当 m(ABc)∶m(Fe 3 O 4 )=2∶1 时，制备的 Fe 3 O 4 @ABc 复合材料比表面积为 622.88 m /g，平均孔径
1.55 nm，具有良好的 MO 去除效果。当 MO 质量浓度为 100 mg/L，Fe 3 O 4 @ABc 添加量为 10 mg，pH 为 3，吸
附时间 240 min，MO 的去除率为 96.14%。制备的 Fe 3 O 4 @ABc 复合材料对 MO 的吸附过程符合拟一级动力学模
型，吸附等温线符合 Freundlich 模型，并以物理吸附为主，化学吸附为辅。
关键词：海藻生物质炭；吸附；甲基橙；磁性功能材料
中图分类号：X703；O647.33 文献标识码：A 文章编号：1003-5214 (2020) 07-1422-07

Preparation of Fe 3O 4@ABc composite and its adsorption
for methyl orange in water

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WANG Xianghui, SHI Jianjun, YOU Chenghang, YAN Huiqiong, SHI Zaifeng, LIN Qiang
（Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Key Laboratory of Soil
Pollution Remediation and Resource Reuse of Haikou City, College of Chemistry and Chemical Engineering, Hainan
Normal University, Haikou 571158, Hainan, China）

Abstract: Magnetic algal biochar (Fe 3O 4@ABc) composite was prepared by coprecipitation method with
Fe 3O 4 nanoparticles and algal biochar (ABc) as raw materials and used for methyl orange (MO) adsorption.
The Fe 3O 4@ABc composite was characterized by XRD, SEM, TEM, FTIR and VSM. The effects of
solution pH and adsorbent dosage on the adsorption of MO were investigated. The adsorption kinetics and
isothermal model were fitted. The results showed that Fe 3O 4 nanoparticles successfully composited on the
surface of ABc. The obtained Fe 3O 4/ABc composite had superparamagetism and could be separated rapidly
under an applied magnetic field. The specific surface area and average pore size of Fe 3O 4/ABc composite
2
[m(ABc)∶m(Fe 3O 4)=2∶1] were 622.88 m /g and 1.55 nm, respectively. The Fe 3O 4/ABc composite
exhibited excellent MO removal effect. The removal rate of MO was 96.14% under the conditions of mass
concentration of MO 100 mg/L, addition amount of adsorbent 10 mg, pH=3, adsorption time 240 min. The
adsorption process of the prepared Fe 3O 4@ABC for MO conformed to the pseudo first-order kinetic model,
and the adsorption isotherm was fitted well the Freundlich model. The adsorption process was mainly
physical adsorption, supplemented by chemical adsorption.
Key words: algal biochar; adsorption; methyl orange; magnetic functional materials

收稿日期：2020-03-01; 定用日期：2020-04-09; DOI: 10.13550/j.jxhg.20200156
基金项目：海南省重点研发计划项目——社会发展方向（ZDYF2018170）；教育部创新团队项目（IRT-16R19）；海口市重点研发平台
项目（2017048）；海南师范大学大学生创新项目
作者简介：王向辉（1982—），男，副教授，E-mail：god820403@163.com。联系人：林 强（1962—），男，教授，E-mail：
linqianggroup@163.com。