A Raman spectroscopic study on the allocation of ammonium adsorbing sites on H2Ti3O7 nanofibre and its structural derivation during calcination

被引：19
|
作者：
Liu, Hongwei [1 ]
Zheng, Zhanfeng [1 ]
Yang, Dongjiang [1 ]
Waclawik, Eric [1 ]
Ke, Xuebin [1 ]
Zhu, Huaiyong [1 ]
Palmer, Sara [1 ]
Frost, Ray L. [1 ]
机构：
[1] Queensland Univ Technol, Inorgan Mat Res Program, Sch Phys & Chem Sci, Brisbane, Qld 4001, Australia
来源：
JOURNAL OF RAMAN SPECTROSCOPY | 2010年 / 41卷 / 12期
基金：
澳大利亚研究理事会;
关键词：
proton trititanate; ammonium ions; Raman spectroscopy; transmission electron microscopy; adsorption; TITANATE NANOFIBERS; TEMPERATURE; MECHANISMS; NANOTUBE; REMOVAL; TI;
D O I：
10.1002/jrs.2632
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The adsorption behaviour of ammonium ions and the structural features of layered proton trititanate were characterised by using Raman spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy. It revealed that the intensity of the Raman band at 309 cm(-1), assigned to very long Ti-O bonds (0.22 nm), reduced, whereas the band at 890 cm(-1), assigned to very short Ti-O bonds (0.17 nm), increased slightly after the adsorption of ammonium ions (NH4+). The adsorption of ammonium ions enlarged the interlayer distance of the (200) plane. Ammonium ions were located at the corner of the TiO6 octahedral slabs. This was further confirmed by XRD, with an increased intensity of the (20 (1) over bar) plane being observed. Copyright (C) 2010 John Wiley & Sons, Ltd.
引用
收藏
页码：1601 / 1605
页数：5
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