Superior azo-dye degradation of Fe-Si-B-P amorphous powders with graphene oxide addition

被引：14

作者：

Wang, Feng ^{[1
]}

Wang, Hao ^{[2
]}

Zhang, Haifeng ^{[3
]}

Dan, Zhenhua ^{[4
]}

Weng, Nan ^{[1
]}

Tang, Wanying ^{[5
]}

Qin, Fengxiang ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[3] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China

[4] Nanjing TECH Univ, Coll Mat Sci & Engn, Nanjing 210009, Jiangsu, Peoples R China

[5] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2018年 / 491卷

关键词：

Amorphous powders; Graphene oxide; Azo dyes; Degradation; ZERO-VALENT IRON; NITRATE REDUCTION; METHYL-ORANGE; WATER; NANOPARTICLES; REMEDIATION; REACTIVITY; PARTICLES;

D O I：

10.1016/j.jnoncrysol.2018.03.048

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：

Degradation behavior of methyl orange and direct blue 6 azo dyes catalyzed by Fe76Si9B10P5 amorphous powders and graphene oxide (GO) addition composites has been investigated. The results revealed that the Fe76Si9B10P5 amorphous powders are more effective to degrade azo dyes than the commercial Fe powders with the activity energies of 24.2 kJ mol(-1) and 20.4 kJ mol(-1) for the degradation of methyl orange and direct blue 6 azo dye solutions. The addition of GO into the amorphous powders further improves the degradation activity, accompanied with lower activation energies of 18.3 kJ mol(-1) and 16.7 kJ mol(-1). High degradation performance of Fe-Si-B-P amorphous powders was attributed to the amorphous structure in metastable state and the existence of metalloids which are beneficial to the formation of a surface layer with high activity. The addition of GO accelerates the degradation process due to its high surface area and the existence of large number of functional groups.

引用

页码：34 / 42

页数：9