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Preparation of Ag-doped mesoporous titania and its enhanced photocatalytic activity under UV light irradiation |
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| Authors: | Yanhui Ao Jingjing Xu Degang Fu Chunwei Yuan |
| Affiliation: | a School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, China b State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China c Key Laboratory of Environmental and Bio-Safety in Suzhou, Research Institute of Southeast University, Dushu Lake Hogher Education Town, Suzhou 215123, China d Jiangsu Laboratory for Biomaterials and Devices, Nanjing 210096, China |
| Abstract: | Ag-doped mesoporous titania was synthesized via a combined sol-gel process with surfactant-assisted templating method using cetyltrimethyl ammonium bromide (CTAB) as the structure-directing agent. The prepared samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption-desorption measurements (BET) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of the samples was determined by degradation of model contaminant water of phenol in aqueous solution. Results showed that different amounts of Ag-doping had different effects on the crystal phase structure and photocatalytic activity of the samples. The sample with 0.5% Ag doping shows the highest photocatalytic activity, which is 2.3 times that of the undoped mesoporous titania. |
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