Catalytic degradation of Orange II in aqueous solution using diatomite-supported bimetallic Fe/Ni nanoparticles

被引：37

作者：

Ezzatahmadi, Naeim ^{[1
,2
]}

Bao, Teng ^{[1
,2
,3
]}

Liu, Hongmei

Millar, Graeme J. ^{[1
]}

Ayoko, Godwin A. ^{[4
]}

Zhu, Jianxi ^{[5
]}

Zhu, Runliang ^{[5
]}

Liang, Xiaoliang ^{[5
]}

He, Hongping ^{[5
]}

Xi, Yunfei ^{[1
,2
]}

机构：

[1] QUT, Sci & Engn Fac, Inst Future Environm, Brisbane, Qld 4001, Australia

[2] QUT, Sci & Engn Fac, Sch Earth Environm & Biol Sci, Brisbane, Qld 4001, Australia

[3] Hefei Univ Technol, Sch Resource & Environm Engn, Lab Nanominerals & Environm Mat, Hefei, Anhui, Peoples R China

[4] QUT, Sci & Engn Fac, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia

[5] Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China

来源：

RSC ADVANCES | 2018年 / 8卷 / 14期

关键词：

ZERO-VALENT IRON; WASTE-WATER; AZO-DYE; FE/PD NANOPARTICLES; COMPOSITE-MATERIALS; REDUCTIVE DEGRADATION; P-CHLOROPHENOL; FERROUS-IONS; REMEDIATION; ADSORPTION;

D O I：

10.1039/c7ra13348k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A functional diatomite-supported Fe/Ni nanocomposite successfully remediated Orange II contaminant in aqueous solution. The hypothesis was that diatomite-supported Fe/Ni would not only be more effective than Fe/Ni but also require less metallic loading to effect the catalytic reaction. Batch experiments indicate that 99.00% of Orange II was removed using diatomite-supported Fe/Ni, while only 86.64 and 3.59% of Orange II were removed using bimetallic Fe/Ni nanoparticles and diatomite, after 6 h of reaction, respectively. Characterisation by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) indicates that the use of diatomite as a support material reduced the aggregation of bimetallic Fe/Ni nanoparticles, thereby resulting in an enhancement in the reactivity. A synergistic mechanism for the removal of Orange II by diatomite-supported Fe/Ni was proposed which involves adsorption, followed by catalytic reduction. This study has demonstrated that diatomite may be a suitable support material for stabilizing and dispersing bimetallic Fe/Ni nanoparticles and the resulting diatomite-supported Fe/Ni composite could be a promising catalyst for the remediation of dye-contaminated wastewater.

引用

页码：7687 / 7696

页数：10

共 32 条

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