CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Investigation on the Light-Driven Formation Mechanism and Photocatalytic Properties of a Porous Amorphous Titanium Dioxide
Chen, W; Wei, X; Wang, JQ(王建强); Wang, KX; Chen, JS
2012
Source PublicationCHINESE JOURNAL OF INORGANIC CHEMISTRY
ISSN1001-4861
Volume28Issue:10
AbstractA porous amorphous TiO2 has been prepared through a light-driven formation process. Titanium glycolate (TG) synthesized through the solvothermal reaction between titanium (IV) n-butoxide and ethylene glycol is used as a precursor. The irradiation of TG under UV light leads to the formation of the porous amorphous TiO2. The sample is characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N-2 adsorption/desorption. The results of these characterizations reveal the porous and amorphous nature of the sample. The transformation mechanism from TG to amorphous TiO2 under UV light is investigated by X-ray absorption fine structure (XAFS) spectroscopy. Extended X-ray Absorption Fine Structure (EXAFS) and X-ray absorption near edge structure (XANES) spectra indicate that the transformation from TG to porous amorphous TiO2 is accomplished through the configuration conversion of titanium species. The configuration of titanium species changes from octahedron to tetrahedron due to the breakage and reconstruction of Ti-O bonds under UV irradiation. The photocatalytic properties of the porous amorphous TiO2 are evaluated based on the reduction of nitrobenzene. As indicated by the surface photovoltage spectroscopy (SPS), the separation of photogenerated charges can be facilitated by the porous structure of the amorphous TiO2, resulting in the high photocatalytic activity of the sample.
Language英语
Funding Project应物所项目组
WOS IDWOS:000310490300005
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13202
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Chen, W,Wei, X,Wang, JQ,et al. Investigation on the Light-Driven Formation Mechanism and Photocatalytic Properties of a Porous Amorphous Titanium Dioxide[J]. CHINESE JOURNAL OF INORGANIC CHEMISTRY,2012,28(10).
APA Chen, W,Wei, X,Wang, JQ,Wang, KX,&Chen, JS.(2012).Investigation on the Light-Driven Formation Mechanism and Photocatalytic Properties of a Porous Amorphous Titanium Dioxide.CHINESE JOURNAL OF INORGANIC CHEMISTRY,28(10).
MLA Chen, W,et al."Investigation on the Light-Driven Formation Mechanism and Photocatalytic Properties of a Porous Amorphous Titanium Dioxide".CHINESE JOURNAL OF INORGANIC CHEMISTRY 28.10(2012).
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