Rapid reductive degradation of azo dyes by a unique structure of amorphous alloys

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	Rapid reductive degradation of azo dyes by a unique structure of amorphous alloys
	C. Q. Zhang; Z. W. Zhu; H. F. Zhang; Z. Q. Hu
	2011
发表期刊	Chinese Science Bulletin
ISSN	1001-6538
卷号	56 期号:36 页码:3988-3992
摘要	An Fe-based amorphous alloy was found to significantly enhance the reductive degradation of an azo dye in aqueous solution. The surface-area normalized rate constant was up to 2.0 L m(-2) min(-1) at room temperature, an order of magnitude larger than any previously reported value. The activation energy of the degradation process was calculated according to the Arrhenius equation, and a much lower value than those previously reported was obtained. Valence band measurement indicated that a depressed valence band maximum and a widened empty band were established in the amorphous ribbon. The unique structure of the amorphous alloy is important - it may reduce the activation energy of the degradation process and enhance the activity of the electrons, thus accelerating the degradation process.
部门归属	[zhang changqin; zhu zhengwang; zhang haifeng; hu zhuangqi] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [zhang changqin] chinese acad sci, grad univ, beijing 100049, peoples r china.;zhang, hf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;hfzhang@imr.ac.cn
关键词	Amorphous Alloys Azo Dyes Uv-visible Spectrophotometer Degradation Activation Energy Zero-valent Iron Bulk Metallic Glasses Aqueous-solution Zerovalent Iron Decolorization Particles Mechanism Oxidation Behavior Powder
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WOS记录号	WOS:000297866900018
引用统计	被引频次：56[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30869
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. Q. Zhang,Z. W. Zhu,H. F. Zhang,et al. Rapid reductive degradation of azo dyes by a unique structure of amorphous alloys[J]. Chinese Science Bulletin,2011,56(36):3988-3992.
APA	C. Q. Zhang,Z. W. Zhu,H. F. Zhang,&Z. Q. Hu.(2011).Rapid reductive degradation of azo dyes by a unique structure of amorphous alloys.Chinese Science Bulletin,56(36),3988-3992.
MLA	C. Q. Zhang,et al."Rapid reductive degradation of azo dyes by a unique structure of amorphous alloys".Chinese Science Bulletin 56.36(2011):3988-3992.