研究目的
To synthesize and study the photocatalytic activity of nanosized powder of Zn-doped titanium dioxide.
研究成果
The synthesized Zn-doped titanium dioxide materials are nanodisperse, one-phase, crystallized in an anatase structure, and thermally stable up to 800°C. They exhibit photocatalytic activity under both UV and visible light, with the highest activity observed for the material containing 0.1 mol % Zn2+ and calcined at 600°C.
研究不足
The study is limited to Zn-doped titanium dioxide with concentrations of 0.1, 0.5, and 1.0 mol % Zn2+. The photocatalytic activity was only tested under UV and visible light irradiation.
1：Experimental Design and Method Selection:
The synthesis involved coprecipitation of Ti(IV) and Zn(II) hydroxides from their corresponding solutions, followed by drying and calcination.
2：Sample Selection and Data Sources:
Titanium tetrachloride and zinc sulfate were used as precursors.
3：List of Experimental Equipment and Materials:
X-ray diffractometer Arl X’tra, TEM Tecnai G2 Spirit Bio TWIN, heat analyzer TG–DTA/DSC STA 449°S/4G Jupiter Jupted.
4：Experimental Procedures and Operational Workflow:
Coprecipitation was carried out from an ammonia solution at 0 to 5°C, followed by thermal treatment at various temperatures.
5：Data Analysis Methods:
X-ray diffraction, electron microscopy, thermogravimetric analysis.
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