Determination of the amorphous phase in titania and its influence on photocatalytic properties
- 10.2991/icmcm-16.2016.100How to use a DOI?
- Amorphous; Mesoporous; Photocatalytic
In the present work, we compare the photocatalytic activity of titania samples normalized to the sample weight and specific surface area (SSA), and show a correlation between the PCA of titania catalysts with similar phase compositions and amorphous phase contents. Catalysts with a significant amorphous content were annealed and processed by partial dissolution in acid and included in the analysis. PCA was measured by methyl orange (MO) photodegradation in an aqueous catalyst suspension under high-pressure Hg bulb illumination and the pH was controlled using phosphate buffer (pH 6.9). The weight percentage of the amorphous phase was determined using reference intensity ratios (RIR) for X-ray diffraction patterns of the titania samples measured with crystalline silicon additives. The reproducibility of the proposed method was demonstrated by measuring the amorphous content in mixtures of the sample and XRD-amorphous titania. The obtained results show that the PCA of the titania samples decreases with the weight percentage of the amorphous phase.
- © 2016, 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/).
Cite this article
TY - CONF AU - Guang Hu AU - Sainan Chen AU - Qinfang Shi AU - Xiang He AU - Pengcheng Chen PY - 2016/12 DA - 2016/12 TI - Determination of the amorphous phase in titania and its influence on photocatalytic properties BT - Proceedings of the 2016 7th International Conference on Mechatronics, Control and Materials (ICMCM 2016) PB - Atlantis Press SP - 519 EP - 524 SN - 2352-5401 UR - https://doi.org/10.2991/icmcm-16.2016.100 DO - 10.2991/icmcm-16.2016.100 ID - Hu2016/12 ER -