Nanosized Metal Oxide and Nanobelts Prepared by Selective Dealloying of Ti-Based Amorphous Powders

被引：13
|
作者：
Wang, Dong Jun [1 ,2 ]
Li, Zhong Hua [2 ]
Rahman, Md Anisur [3 ]
Shen, Jun [1 ,2 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China
[2] Minist Educ, Key Lab Microsyst & Microstruct Mfg, Harbin 150001, Peoples R China
[3] Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China
来源：
LANGMUIR | 2013年 / 29卷 / 25期
关键词：
TITANATE NANOTUBES; NANOPOROUS COPPER; EVOLUTION; WATER; PROPERTY; HYDROGEN; REMOVAL; CR(VI); GROWTH; XPS;
D O I：
10.1021/la4010449
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Two typical nanomaterials, nanosized metal oxides and nanobelts, are obtained in one-pot selective dealloying process by using multiple-component Ti-based amorphous powders as dealloying precursors. The microstructure and photoelectric conversion property of the as-synthesized Zr-doped nanobelts are comprehensively investigated. Particularly, a core shell structure, for example, residual amorphous alloy as the microsized core and nanosized metal oxide composites (mainly TiO2 and CuO) as the shell, forms as a byproduct of the selective dealloying. These resultant metal oxide composites show large specific surface area, and superior adsorption efficiency and capacity for removing toxic Cr6+ in aqueous solution. The differences in the standard electrode potentials between the multiple-component elements in amorphous powders trigger their selective dealloying in alkaline solutions.
引用
收藏
页码：8108 / 8115
页数：8
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