Synthesis of Calcium Doped TiO2 Nanomaterials and Their Visible Light Degradation Property

DOI

10.2991/icmaee-14.2014.12How to use a DOI?

Keywords

Calcium doping, Titanium dioxide, Solid state reaction, Visible light degradation, Thiophene

Abstract

Calcium with low charge density doped TiO2 (Ca-TiO2) mesoporous nanomaterials with high specific surface areas were successfully synthesized via a simple and effective solid-state reaction route. The properties of these nanomaterials were characterized by X-ray diffraction (XRD), small angle X-ray scattering (SAXS), scaning electron microscopy (SEM), energy dispersive spectroscopy (EDS), N2 absorption-desorption, ultraviolet visible light spectroscopy (UV-Vis) and infrared spectrum (IR). The results show that the samples possess the high specific surface area of 101.4m2/g, spherical nanosize of 9~16 nm, the structure of anatase TiO2, and the doped Ca2+ ion has been incorporated into the lattice or positioned on an interstitial lattice site of TiO2 with the changes of the amounts of calcium. Interestingly, the IR displays that the stretching vibrational peaks at ~1630cm 1 are assignable to the red shift of the -OH bond coming from the increasing of the doped calcium amount and the adsorption capacity of thiophene. Moreover, compared with the pure titanium dioxide, the Ca-TiO2 nanomaterials show excellent photocatalytic activities upon thiophene. For the Ca-TiO2 (Ca:Ti=1:7) photocatalyst, 90.2% of the initial thiophene can be degraded by visible light irradiation at 25oC for 50 min.

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Shaoyou Liu
AU  - Zongyi Min
AU  - Dingze Hu
AU  - Yunguo Liu
PY  - 2014/03
DA  - 2014/03
TI  - Synthesis of Calcium Doped TiO2 Nanomaterials and Their Visible Light Degradation Property
BT  - Proceedings of the International Conference on Material and Environmental Engineering (ICMAEE 2014)
PB  - Atlantis Press
SP  - 43
EP  - 47
SN  - 1951-6851
UR  - https://doi.org/10.2991/icmaee-14.2014.12
DO  - 10.2991/icmaee-14.2014.12
ID  - Liu2014/03
ER  -