磁性壳聚糖/ZnS:Fe复合纳米粒子的制备及其对孔雀石绿的光催化降解

夏虹; 彭茂民; 刘丽

doi:10.3788/fgxb20194008.0993

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磁性壳聚糖/ZnS:Fe复合纳米粒子的制备及其对孔雀石绿的光催化降解

材料合成及性能 | 更新时间：2020-08-12

- 磁性壳聚糖/ZnS:Fe复合纳米粒子的制备及其对孔雀石绿的光催化降解
- Magnetic Chitosan/ZnS:Fe Nanocomposite: Preparation and Application in Malachite Green Removal
- 发光学报 2019年40卷第8期页码：993-1000
- 作者机构：
  
  湖北省农业科学院农业质量标准与检测技术研究所,湖北武汉,430064
- 作者简介：
- 基金信息：
  
  湖北省自然科学基金（2016CFB213）();湖北省农业科学院青年科学基金（2015NKYJJ15）资助项目()
- DOI：10.3788/fgxb20194008.0993
  中图分类号： X703
- 收稿日期：2018-08-14，
  
  修回日期：2018-10-16，
  
  网络出版日期：2018-11-08，
  
  纸质出版日期：2019-08-05
- 稿件说明：
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夏虹, 彭茂民, 刘丽. 磁性壳聚糖/ZnS:Fe复合纳米粒子的制备及其对孔雀石绿的光催化降解[J]. 发光学报, 2019,40(8): 993-1000

XIA Hong, PENG Mao-min, LIU Li. Magnetic Chitosan/ZnS:Fe Nanocomposite: Preparation and Application in Malachite Green Removal[J]. Chinese Journal of Luminescence, 2019,40(8): 993-1000
夏虹, 彭茂民, 刘丽. 磁性壳聚糖/ZnS:Fe复合纳米粒子的制备及其对孔雀石绿的光催化降解[J]. 发光学报, 2019,40(8): 993-1000 DOI： 10.3788/fgxb20194008.0993.

XIA Hong, PENG Mao-min, LIU Li. Magnetic Chitosan/ZnS:Fe Nanocomposite: Preparation and Application in Malachite Green Removal[J]. Chinese Journal of Luminescence, 2019,40(8): 993-1000 DOI： 10.3788/fgxb20194008.0993.

摘要

采用化学共沉淀法制备了磁性壳聚糖，然后以制得磁性壳聚糖纳米粒子为基体，利用层层自组装原理，在磁性壳聚糖表面原位生长ZnS:Fe纳米晶，制备得到磁性壳聚糖/ZnS:Fe复合纳米粒子。采用XRD和VSM对其进行表征，结果表明，制备得到的磁性壳聚糖/ZnS:Fe复合纳米粒子具有超顺磁性能，室温下饱和磁化强度为15.88 Am

-1

。以孔雀石绿为模型污染物，采用UV-Vis手段研究磁性壳聚糖/ZnS:Fe复合纳米粒子的光催化降解性能。实验结果表明，向初始浓度为10 mg/L孔雀石绿溶液中加入100 mg/L磁性壳聚糖/ZnS:Fe复合纳米粒子，60 min时孔雀石绿的去除率为95.3%，重复使用5次后，降解率略有降低（从95.3%降低到80.8%），其反应过程符合假一级动力学的假设。因此，磁性壳聚糖/ZnS:Fe复合纳米粒子可以光催化降解孔雀石绿。

Abstract

In photodegradation studies

the effect of main experimental parameters on the decolorization efficiency was studied and optimized. The maximum decolorization efficiency of 95.3% was obtained when the initial MG concentration

M-CS/ZnS:Fe dosage

and contact time were optimally set as 10 mg/L

100 mg/L

and 60 min

respectively. The process kinetics can be successfully fitted to the first order kinetics of Langmuir-Hinshelwood model. Moreover

M-CS/ZnS:Fe could be easily separated under an external magnetic field. After five consecutive runs

a small and gradual decrease from 95.3% to 80.8% in the decolorization ration was observed.

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references

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