Biomolecule-Assisted Synthesis of In(OH)3 Hollow Spherical Nanostructures Constructed with Well-Aligned Nanocubes and Their Conversion into C-In2O3
Biomolecule-Assisted Synthesis of In(OH)3 Hollow Spherical Nanostructures Constructed with Well-Aligned Nanocubes and Their Conversion into C-In2O3
复制标题
DOI：
10.1021/jp806100k
复制
发表时间：
2008-11
影响因子：
3.7
通讯作者：
Liyong Chen;Zu-de Zhang
中科院分区：
文献类型：
--
作者：
Liyong Chen;Zu-de Zhang
在这项工作中，我们证明了氢氧化铟（In（OH）3）纳米球与中空的内部，其外壳是由定向连接的纳米立方体，已通过dl-天冬酰胺辅助合成路线，没有任何模板。来自dl-天冬酰胺水解的NH3和dl-天冬氨酸分别充当OH−提供者和封端分子。一个详细的机制，涉及溶解-重结晶和定向聚集过程，已被研究的基础上，随时间变化的实验结果。通过在空气中在400 °C下对In（OH）3前体进行退火，还制备了继承其前体形态的α相三氧化二铟（C-In 2 O3）纳米晶体。
In this work, we demonstrate that indium hydroxide (In(OH)3) nanospheres with hollow interior, whose shells are constructed of oriented-attachment nanocubes, have been fabricated via a dl-asparagine-assisted synthesis route without any template. NH3 and dl-aspartic acid from the hydrolysis of dl-asparagine act as the OH− provider and the capping molecule, respectively. A detailed mechanism, involving dissolution−recrystallization and oriented aggregation processes, has been investigated on the basis of time-dependent experimental results. By annealing In(OH)3 precursors at 400 °C in air, cubic-phase indium sesquioxide (C−In2O3) nanocrystals, which inherit the morphology of their precursors, are also prepared.