纺织学报 ›› 2026, Vol. 47 ›› Issue (02): 255-263.doi: 10.13475/j.fzxb.20250909801

• 染整工程 • 上一篇    下一篇

黄麻织物基磁性含氮多孔碳对Cr(VI)的吸附性能

岳献阳1,2, 王少博1,3, 黄鑫1,3(), 王艳芝1,2, 李冲冲1, 张晓晓1   

  1. 1 中原工学院 智能纺织与织物电子学院, 河南 郑州 450007
    2 先进纺织装备技术省部共建协同创新中心, 河南 郑州 451191
    3 郑州市绿色染整技术重点实验室, 河南 郑州 451191
  • 收稿日期:2025-09-21 修回日期:2025-12-08 出版日期:2026-02-15 发布日期:2026-04-24
  • 通讯作者: 黄鑫(1984—),男,副教授,博士。主要研究方向为生态纺织染整技术。E-mail:xinhuang@zut.edu.cn。
  • 作者简介:岳献阳(1988—),男,讲师,博士。主要研究方向为生物质基多孔碳及其复合材料开发应用。

    说明:本文入围中国纺织工程学会第26届陈维稷论文卓越行动计划

  • 基金资助:
    河南省科技攻关项目(222102320303);河南省自然科学基金面上项目(242300421360);河南省高等学校重点科研项目(26A430046);中原工学院自然科学基金项目(K2026ZD022);国家级大学生创新创业训练计划项目(202110465015)

Adsorption performance of jute fabric-based magnetic nitrogen-dope porous carbon for Cr(VI)

YUE Xianyang1,2, WANG Shaobo1,3, HUANG Xin1,3(), WANG Yanzhi1,2, LI Chongchong1, ZHANG Xiaoxiao1   

  1. 1 College of Intelligent Textile and Textile Electronics, Zhongyuan University of Technology, Zhengzhou, Henan 450007, China
    2 Collaborative Innovation Center of Advanced Textile Equipment and Technology Co-constructed by Ministry of Education and Henan Provincial Government, Zhengzhou, Henan 451191, China
    3 Zhengzhou Key Laboratory of Green Dyeing and Finishing Technology, Zhengzhou, Henan 451191, China
  • Received:2025-09-21 Revised:2025-12-08 Published:2026-02-15 Online:2026-04-24

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摘要：

为实现高毒性含铬废液的高效环保处理,同时推动废旧黄麻的回收与高附加值利用,以黄麻织物为生物质原料,通过物理-化学联合活化法制备高比表面积多孔碳(PC),随后采用水热法制备原位负载镍铁层状双金属氢氧化物(Ni-Fe-LDH)的PC基复合材料(Ni-Fe-LDH/PC),并分析Ni-Fe-LDH负载量、溶液pH值对其Cr(VI)吸附性能的影响,探究其吸附热力学、动力学过程及磁回收性能。结果表明:Ni-Fe-LDH与PC的复合可协同增强材料对Cr(VI)的吸附容量;当Ni-Fe-LDH预设负载量为PC质量的10%时,所得复合材料(10%Ni-Fe-LDH/PC)对Cr(VI)的吸附量最大,其比表面积达1 070.19 m2/g,孔径主要分布在0.6~0.9 nm,呈微孔结构;在Cr(VI)初始质量浓度为50 mg/L、复合材料投加量为0.4 g/L、溶液pH值为2时,10%Ni-Fe-LDH/PC对Cr(VI) 的吸附容量最佳,达88.05 mg/g;该复合材料对Cr(VI)的吸附符合Freundlich 多分子层非均匀吸附模型,且吸附过程符合准二级动力学模型,吸附机制以化学吸附为主;此外,10%Ni-Fe-LDH/PC对Cr(VI)吸附效果优于商业活性炭,且磁响应速度较快(<2 s),展现出良好的应用潜力。

关键词: 黄麻织物, 多孔碳, 镍铁层状双金属氢氧化物, 重金属吸附, 六价铬离子, 废水处理, 废旧纺织品, 水热法

Abstract:

Objective Cr(VI) heavy metal pollutants are highly toxic and carcinogenic, posing a severe threat to the natural ecological environment and human life and health. Adsorption is regarded as one of the most promising methods for treating Cr(VI)-containing wastewater. Porous carbon prepared from renewable biomass resources is an excellent adsorbent, but it is difficult to separate and recover. Nickel-iron layered double hydroxide (Ni-Fe-LDH) exhibits good magnetism and favorable adsorption performance for heavy metals. Combining the two can achieve complementary advantages of the materials. Herein, a jute fabric-based porous carbon composite material with in-situ loaded nano-film Ni-Fe-LDH was developed, aiming to enhance its adsorption capacity for Cr(VI) while enabling facile magnetic separation and recovery of the material.

Method Using jute fabric as the biomass substrate, fabric-like porous carbon (PC) was prepared via a combined physical-chemical activation method. Subsequently, the Ni-Fe-LDH/PC composite with in-situ loaded Ni-Fe-LDH was obtained by the hydrothermal method. The phase composition, structure, micromorphology, specific surface area and pore size distribution of the composite were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and N2 adsorption-desorption isotherm. Moreover, the effects of Ni-Fe-LDH loading amount and solution pH on the Cr(VI) adsorption performance of the composite were investigated, and its adsorption thermodynamics, kinetics, and magnetic recovery performance were clarified.

Results The combination of Ni-Fe-LDH and PC can effectively enhance their adsorption capacity for Cr(VI). With the increase of Ni-Fe-LDH loading (within the range of 10% to 150%), the adsorption capacity of Cr(VI) by the composite material continuously decreases, but it is still higher than that of pure Ni-Fe-LDH and PC. When the loading amount of Ni-Fe-LDH was set to 10% of the mass of PC, the composite material (10%Ni-Fe-LDH/PC) exhibited maximum adsorption capacity for Cr(VI). This composite not only retained the fabric structure but also was loaded with nano-film Ni-Fe-LDH, with a specific surface area of 1 070.19 m2/g. Its pore size was mainly distributed between 0.6 and 0.9 nm, showing a microporous structure. Under the conditions of initial Cr(VI) mass concentration of 50 mg/L and the composite material dosage of 0.4 g/L, 10%Ni-Fe-LDH/PC achieved the maximum adsorption capacity for Cr(VI) (up to 88.05 mg/g) when the solution pH was 2. The adsorption of Cr(VI) by this composite conformed to the Freundlich multimolecular layer heterogeneous adsorption model. Additionally, the adsorption process followed the pseudo-second-order kinetic model, indicating that the adsorption of Cr(VI) was mainly chemical adsorption. Furthermore, the adsorption capacity of 10%Ni-Fe-LDH/PC for Cr(VI) was 1.47 times that of commercial powder activated carbon and 1.80 times that of the commercial granular activated carbon, and its magnetic response speed was less than 2 s.

Conclusion In this paper, jute fabric was used as the biomass substrate, and the Ni-Fe-LDH/PC composite was successfully prepared via the combined physical-chemical activation method and hydrothermal method. The composite, 10%Ni-Fe-LDH/PC, retains the fabric structure with a specific surface area up to 1 070.19 m2/g. It achieves maximum adsorption capacity for Cr(VI) (88.05 mg/g) when the solution pH is 2. The adsorption of Cr(VI) by this composite conforms to the Freundlich multimolecular layer adsorption model, and the adsorption of Cr(VI) is mainly chemical adsorption. In addition, its adsorption effect on Cr(VI) is superior to that of commercial powdered activated carbon and granular activated carbon, and it has a fast magnetic separation response speed, showing good application potential.

Key words: jute fabric, porous carbon, nickel-iron layered double hydroxide, heavy metal adsorption, Cr(VI), wastewater treatment, waste textile, hydro-thermal method

中图分类号: 

  • TS102.9

图1

复合材料的XRD对比图"

图2

10%Ni-Fe-LDH/PC和PC的SEM照片"

表1

10%Ni-Fe-LDH/PC和PC所含元素对比"

元素 PC 10%Ni-Fe-LDH/PC
质量占比 原子占比 质量占比 原子占比
C 89.26 91.54 77.28 82.39
O 9.04 6.96 17.08 13.67
N 1.70 1.50 3.89 3.56
Ni 0 0 1.6 0.35
Fe 0 0 0.16 0.04

图3

10%Ni-Fe-LDH/PC和PC的氮气吸脱附等温线及孔径分布对比"

图4

不同LDH负载量对复合材料吸附Cr(VI)效果对比"

图5

溶液pH值对10%Ni-Fe-LDH/PC吸附Cr(VI)性能的影响"

图6

热力学模型拟合图"

表2

Langmuir 和 Freundlich 吸附模型常数"

Langmuir模型 Freundlich模型
Q0 b R2 k n R2
105.018 3 10.868 9 0.789 2 78.127 3 11.013 2 0.923 5

图7

10% Ni-Fe-LDH/PC对Cr(VI)吸附动力学曲线"

图8

吸附动力学拟合图"

表3

10% Ni-Fe-LDH/PC吸附Cr(VI)动力学模型拟合数值"

起始质量
浓度C0/
(mg·L-1)		 准一级动力学模型 准二级动力学模型
k1/
h-1		 Qe/
(mg·g-1)		 R2 k2/
(g·(mg· h)-1)		 Qe/
(mg·g-1)		 R2
75 0.166 9 34.59 0.907 1 0.016 3 102.04 0.999 1

图9

10%Ni-Fe-LDH/PC与商业活性炭吸附Cr(VI)性能对比"

图10

10%Ni-Fe-LDH/PC吸附Cr(VI)后磁响应性验证结果"

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