Lepidocrocite-Type Titanate Formation from Isostructural Prestructures under Hydrothermal Reactions: Observation by Synchrotron X-ray Total Scattering Analyses
Lepidocrocite-Type Titanate Formation from Isostructural Prestructures under Hydrothermal Reactions: Observation by Synchrotron X-ray Total Scattering Analyses
复制标题
水热反应下等结构预结构形成纤铁矿型钛酸盐:通过同步加速器 X 射线全散射分析观察
DOI:
10.1021/acsomega.8b01693
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发表时间:
2018
期刊:
影响因子:
4.1
通讯作者:
Ohara Koji
中科院分区:
文献类型:
--
作者:
Tominaka Satoshi;Yamada Hiroki;Hiroi Satoshi;Kawaguchi Saori I.;Ohara Koji
The formation of titanium dioxides, such as rutile and anatase, is known to proceed through the formation of a lepidocrocite-type layered structure under hydrothermal conditions, but the nucleation of this intermediate is still not understood well. Here, the nucleation of lepidocrocite-type layered titanates under hydrothermal conditions is observed by tracking the structural changes by in situ time-resolved pair distribution function analyses. We found that titanate clusters or corrugated layered prestructures having <1 nm domains with lepidocrocite-type connectivity were formed even before thermal treatment in alkaline aqueous solution. Upon thermal treatment, a two-dimensional layered structure grew directly from the prestructure, not from the amorphous polymeric hydroxide dissolved in the solution. Thus, we conclude that the formation of the lepidocrocite-like prestructure is the key for forming a layered titanate under hydrothermal conditions.
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影响因子:
16.6
作者:
Bremholm, Martin;Felicissimo, Marcella;Iversen, Bo B.
通讯作者:
Iversen, Bo B.
影响因子:
3.3
作者:
Hisako Sato;K. Ono;T. Sasaki;A. Yamagishi
通讯作者:
Hisako Sato;K. Ono;T. Sasaki;A. Yamagishi
DOI:
10.1080/01411599208203468
发表时间:
1992
期刊:
影响因子:
--
作者:
P. Barnes
通讯作者:
P. Barnes
影响因子:
3.7
作者:
Howell, RC;Proffen, T;Conradson, SD
通讯作者:
Conradson, SD
影响因子:
4.9
作者:
R. Walton;D. O′Hare
通讯作者:
D. O′Hare