A Raman spectroscopic study on the allocation of ammonium adsorbing sites on H2Ti3O7 nanofibre and its structural derivation during calcination
Author(s)
Liu, Hongwei
Zheng, Zhanfeng
Yang, Dongjiang
Waclawik, Eric
Ke, Xuebin
Zhu, Huaiyong
Palmer, Sara
L. Frost, Ray
Griffith University Author(s)
Year published
2010
Metadata
Show full item recordAbstract
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-Obonds (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 ...
View more >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-Obonds (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 (201褐plane being observed.
View less >
View more >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-Obonds (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 (201褐plane being observed.
View less >
Journal Title
Journal of Raman Spectroscopy
Volume
41
Issue
12
Subject
Physical Chemistry not elsewhere classified
Condensed Matter Physics
Physical Chemistry (incl. Structural)
Mechanical Engineering