New branch on old tree: Green-synthesized RGO/Fe3O4 composite as a photo-Fenton catalyst for rapid decomposition of methylene blue

被引:49
作者
Jiang, Xiaoying [1 ]
Li, Lingling [1 ]
Cui, Yanrui [1 ]
Cui, Fengling [1 ]
机构
[1] Henan Normal Univ, Minist Educ, Key Lab Green Chem Media & React, Coll Chem & Chem Engn, Xinxiang 453007, Peoples R China
关键词
One-step synthesis; Sargassum thunbergii; RGO/Fe3O4; Photo-Fenton; GRAPHENE OXIDE; PHOTOCATALYTIC DEGRADATION; SILVER NANOPARTICLES; HIGHLY EFFICIENT; WATER-TREATMENT; WASTE-WATER; NANOCOMPOSITES; AMMONIA; SHEETS; CARBON;
D O I
10.1016/j.ceramint.2017.07.195
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We report herein the facile fabrication of reduced graphene oxide (RGO) loaded with Fe3O4 nanocomposites (consisting of gauze-like RGO nanosheets and Fe3O4 nanoparticles) through a simple, low-cost and environmental-friendly procedure that employs a brown alga (Sargassum thunbergii) as the solely reducing agent. The RGO/Fe3O4 nanocomposites could work as novel catalytic materials with magnetic and photo-Fenton catalytic properties. In the presence of Sargassum thunbergii, the spherical-shaped Fe3O4 nanoparticles with an average diameter of 7 nm have uniformly anchored on the RGO nanosheets. The material has displayed excellent performance in terms of dye degradation (methylene blue, MB), showing a 96% degradation rate of MB after 120 min irradiation under almost neutral pH environment, and room temperature conditions. After the reaction, the RGO/Fe3O4 nanocomposite could be easily separated and recycled due to its excellent ferromagnetism and superior stability. Our study provides a strong validation of RGO/Fe3O4 remarkable capacity toward visible-light-driven degradation of organic contaminates.
引用
收藏
页码:14361 / 14368
页数:8
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