ECOFRIENDLY FABRICATION OF Au/Fe3O4-CHITOSAN COMPOSITES FOR CATALYTIC REDUCTION OF METHYL ORANGE

被引：0

作者：

Liu, X. L. ^{[1
]}

Yang, X. ^{[1
]}

Xin, H. Y. ^{[1
]}

Tang, X. P. ^{[1
]}

Weng, L. J. ^{[1
]}

Han, Y. Y. ^{[1
]}

Geng, D. ^{[1
]}

机构：

[1] Huaqiao Univ, Coll Chem Engn, Key Lab Biochem Engn Technol Fujian Prov, Xiamen, Peoples R China

来源：

DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES | 2016年 / 11卷 / 02期

关键词：

Magnetic chitosan; Gold nanoparticles; Methyl orange; Catalytic degradation; GOLD NANOPARTICLES; AU NANOPARTICLES; CHITOSAN NANOPARTICLES; AQUEOUS-SOLUTIONS; CONGO RED; AZO DYES; REMOVAL; WATER; DEGRADATION; ADSORBENT;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Au/Fe3O4-chitosan composites were synthesized by a green method without using any strong reducing or stabilizing agents. The morphological properties and structural features of the composites were investigated by transmission electron microscopy (TEM), X-ray diffraction patterns (XRD), thermogravimetric (TG) and Fourier transform infrared (FT-IR) techniques. Catalytic degradation of methyl orange in the presence of NaBH4 using the as-prepared composite as catalysts were studied. The effects of pH value, Au content, reaction time and temperature were tested and the recycling performance of catalysts was examined. The Au/Fe3O4-chitosan composites showed a high catalytic activity when it was prepared with 0.5 wt% Au, pH 6.0 +/- 0.1 at 50 degrees C for 1 h. The degradation rate of methyl orange followed first order kinetics. A possible degradation mechanism of methyl orange was proposed.

引用

页码：337 / 348

页数：12

共 42 条

[41] Studies of the magnetic field intensity on the synthesis of chitosan-coated magnetite nanocomposites by co-precipitation method [J].

Zhang, Wei ;

Jia, Shaoyi ;

Wu, Qian ;

Wu, Songhai ;

Ran, Jingyu ;

Liu, Yong ;

Hou, Jingwei .

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, 2012, 32 (02) :381-384

[42] Two-step preparation of nano-scaled magnetic chitosan particles using Triton X-100 reversed-phase water-in-oil microemulsion system [J].

Zhou, Zhengkun ;

Jiang, Feihong ;

Lee, Tung-Ching ;

Yue, Tianli .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 581 :843-848

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