Structural Characterization and Photocatalytic Activity of Synthesized Carbon Modified TiO2 for Phenol Degradation
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2020年第3期
论文作者：张金源 ZHENG Yanbing MA Mindi 李惠娟
文章页码：535 - 540
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 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）.
张金源，ZHENG Yanbing，MA Mindi，李惠娟
Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China (Southwest Forestry University)
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 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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