【摘 要】
：
To promote the photocatalytic performance TiO2 and enlarge its application in visible region, carbon doped TiO2 (C/TiO2) composites were synthesized by wet impregnation method using sucrose as a precursor and used for phenol photocatalytic reaction. The s
【机 构】
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(Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Fo
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
To promote the photocatalytic performance TiO2 and enlarge its application in visible region, carbon doped TiO2 (C/TiO2) composites were synthesized by wet impregnation method using sucrose as a precursor and used for phenol photocatalytic reaction. The synthesized products were characterized by Nitrogen adsorption-desorption isotherms (BET), X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-visible diffuse reflectance spectroscopy (UV-vis) techniques. The results showed that the obtained TiO2 was anatase phase in the C/TiO2 products, and its crystallite size was 11.7 nm, respectively. Carbon amount and calcined temperature of C/TiO2 can promote phenol removal. In this experiment, 5％ carbon and 500 ℃ are the best choice for photocatalyst preparation. Under the UV light irradiation, 5％C/TiO2 (500 ℃, 2 h) exhibited the efficiency of 70.0％ for phenol degradation within 150 min whereas TiO2 (500 ℃, 2 h) had 53.0％ in the same duration of time. Also 5％C/TiO2 (500 ℃, 2 h) has higher photocatalytic performance under sunlight than pure TiO2. A combination of factors that include the smallest crystalline size, higher anatase percent, less band gap energy value and more oxygen vacant resulted in higher photocatalytic activities of 5％C/TiO2 (500 ℃, 2 h).
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