Preparation of Three-dimensional Magnetic Composite ZnFe2O4/g-C3N4/rGO@Ag and Efficient Photocatalytic Degradation of Rhodamine B

HU Yi-xuan; HUANG Chu-huai; SUN Fu-lang; LI Song; WANG Gong-shu

doi:10.14028/j.cnki.1003-3726.2023.02.010

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Preparation of Three-dimensional Magnetic Composite ZnFe₂O₄/g-C₃N₄/rGO@Ag and Efficient Photocatalytic Degradation of Rhodamine B

更新时间：2022-12-29

- Preparation of Three-dimensional Magnetic Composite ZnFe₂O₄/g-C₃N₄/rGO@Ag and Efficient Photocatalytic Degradation of Rhodamine B
- Polymer Bulletin Vol. 36, Issue 2, Pages: 232-240(2023)
- 作者机构：
  
  1.东北大学材料科学与工程学院，沈阳　110819
  2.东北大学理学院，沈阳　110819
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2023.02.010
  CLC：
- Published：20 February 2023，
  
  Received：16 January 2022，
  
  Revised：22 February 2022，
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HU Yi-xuan, HUANG Chu-huai, SUN Fu-lang, LI Song, WANG Gong-shu. Preparation of Three-dimensional Magnetic Composite ZnFe₂O₄/g-C₃N₄/rGO@Ag and Efficient Photocatalytic Degradation of Rhodamine B. [J]. Polymer Bulletin 36(2):232-240(2023)
DOI：

HU Yi-xuan, HUANG Chu-huai, SUN Fu-lang, LI Song, WANG Gong-shu. Preparation of Three-dimensional Magnetic Composite ZnFe₂O₄/g-C₃N₄/rGO@Ag and Efficient Photocatalytic Degradation of Rhodamine B. [J]. Polymer Bulletin 36(2):232-240(2023) DOI： 10.14028/j.cnki.1003-3726.2023.02.010.

摘要

光催化降解有机染料被认为是目前解决染料污染问题的一种理想策略。首先以三聚氰胺、氧化石墨烯(GO)和中空ZnFe

为前驱体通过热处理来构建3D结构ZnFe

/g-C

/rGO骨架;然后将银(Ag)作为助催化剂固定在ZnFe

/g-C

/rGO骨架上

制备了3D结构ZnFe

/g-C

/rGO@Ag复合光催化剂。并采用傅里叶变换红外(FT-IR)、X射线衍射(XRD)和扫描电子显微镜(SEM)等手段对材料的结构、形貌与化学组成进行了表征。结果表明

ZnFe

/g-C

/rGO@Ag复合催化剂在可见光的照射下对罗丹明B (RhB)的降解活性显著增强

在可见光照射下20 min内对RhB的降解率达到了97%

是ZnFe

/g-C

/rGO 降解率的2倍。另外

ZnFe

的引入使得Zn-Fe

/g-C

/rGO@Ag复合材料具有良好的磁性

在外部磁场的作用下可以很容易地从反应体系中分离回收

重复使用5次后

光催化活性没有明显降低

表明该催化材料具有良好的稳定性和重复使用性能。

Abstract

Photocatalytic degradation of organic dyes is considered as an ideal strategy to solve the dye pollution problem. In this study

melamine

graphene oxide (GO)

and hollow ZnFe

were used as precursors to construct a 3D ZnFe

/g-C

/rGO skeleton by heat treatment. Then

the silver (Ag) as a co-catalyst was immobilized on the ZnFe

/g-C

/rGO skeleton to prepare the 3D ZnFe

/g-C

/rGO@Ag composite photocatalyst. The structure

morphology

and chemical composition of the obtained materials were characterized with Fourier transform infrared (FT-IR)

X-ray diffraction patterns (XRD)and scanning electron microscopy (SEM). The experimental results showed that the degradation activity of ZnFe

/g-C

/rGO@Ag composite catalyst for Rhodamine B (RhB) was significantly enhanced

and the degradation rate of RhB reached 97% within 20 min under visible light irradiation

which was twice as high as that of ZnFe

/g-C

/rGO. In addition

the introduction of ZnFe

endowed the ZnFe

@g-C

/GO@Ag composite with good magnetic properties

which can be easily separated from the reaction system under the action of an external magnetic field. After repeated use for 5 times

the photocatalytic activity did not decrease significantly

indicating that the catalytic material has excellent stability and recyclability.

关键词

ZnFe2O4g-C3N4氧化石墨烯光催化降解罗丹明B

Keywords

ZnFe2O4g-C3N4Graphene oxidePhotodegradationRhodamine B

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