Controllable synthesis of α- and β-MnO2: cationic effect on hydrothermal crystallization | |
Huang, XK ; Lv, DP ; Yue, HJ ; Attia, A ; Yang, Y ; Yang Y(杨勇) | |
刊名 | http://dx.doi.org/10.1088/0957-4484/19/22/225606 |
2008-06-04 | |
关键词 | OCTAHEDRAL MOLECULAR-SIEVE MANGANESE-DIOXIDE ION-EXCHANGE ELECTROCHEMICAL PROPERTIES MNO2 NANOSTRUCTURES LITHIUM BATTERIES ALKALI-METAL OXIDE NANOWIRES OXIDATION |
英文摘要 | alpha- and beta-MnO(2) were controllably synthesized by hydrothermally treating amorphous MnO(2) obtained via a reaction between Mn(2+) and MnO(4)(-), and cationic effects on the hydrothermal crystallization of MnO(2) were investigated systematically. The crystallization is believed to proceed by a dissolution-recrystallization mechanism; i.e. amorphous MnO(2) dissolves first under hydrothermal conditions, then condenses to recrystallize, and the polymorphs formed are significantly affected by added cations such as K(+), NH(4)(+) and H(+) in the hydrothermal systems. The experimental results showed that K(+)/NH(4)(+) were in competition with H(+) to form polymorphs of alpha- and beta-MnO(2), i.e., higher relative K(+)/NH(4)(+) concentration favoured alpha-MnO(2), while higher relative H(+) concentration favoured beta-MnO(2). |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://dspace.xmu.edu.cn/handle/2288/62295] |
专题 | 化学化工-已发表论文 |
推荐引用方式 GB/T 7714 | Huang, XK,Lv, DP,Yue, HJ,et al. Controllable synthesis of α- and β-MnO2: cationic effect on hydrothermal crystallization[J]. http://dx.doi.org/10.1088/0957-4484/19/22/225606,2008. |
APA | Huang, XK,Lv, DP,Yue, HJ,Attia, A,Yang, Y,&杨勇.(2008).Controllable synthesis of α- and β-MnO2: cationic effect on hydrothermal crystallization.http://dx.doi.org/10.1088/0957-4484/19/22/225606. |
MLA | Huang, XK,et al."Controllable synthesis of α- and β-MnO2: cationic effect on hydrothermal crystallization".http://dx.doi.org/10.1088/0957-4484/19/22/225606 (2008). |
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