Preparation and characterization of doped TiO2 nanodandelion |
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Authors: | Lu Ren Fenglou Sun |
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Affiliation: | a Department of Physics, Central China Normal University, Wuhan 430079, PR China b Plasma Institute, South Central University for Nationalities, Wuhan 430070, PR China |
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Abstract: | Doped dandelion-like TiO2 microspheres assembled nanorods were synthesized from rutile powders using either urea or thiourea leading to N- or S-doped TiO2. The rutile particles reacted in concentrated NaOH and urea (or thiourea) solution under hydrothermal conditions (200 °C for 24 h), yielding N- and S-doped TiO2 nanodandelions with diameters ranging from 0.7 to 1.3 μm. SEM, HRTEM, X-ray diffraction (XRD) and IR spectra were used to characterize the synthesis of powders. The results show that concentrated urea (or thiourea) and NaOH are used as additives that help in the construction of the dandelion-like structures. The fabricated nanostructures exhibit high photocatalytic activity in the photodegradation of aqueous Methylene Blue solution. |
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Keywords: | Titanium dioxide Urea Thiourea N-doped S-doped Nanodandelions |
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