| TiO2/活性炭复合体超临界沉淀法制备及其光催化性能 |
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| 引用本文： | 陈伟,刘建本,李佑稷,李雷勇,曾梦雄.TiO2/活性炭复合体超临界沉淀法制备及其光催化性能[J].材料科学与工程学报,2011(6):943-948. |
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| 作者姓名： | 陈伟 刘建本 李佑稷 李雷勇 曾梦雄 |
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| 作者单位： | 吉首大学化学化工学院 |
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| 基金项目： | 国家自然科学基金资助项目(10702001);安徽省优秀青年科技基金资助项目(10040606Y23) |
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| 摘 要： | 以活性炭为载体、超临界二氧化碳为流体、钛酸丁酯为前驱体,用超临界流体沉积法制备TiO2/活性炭（TiO2/AC）复合体。用X射线衍射（XRD）、扫描电镜（SEM）、比表面积分析（BET）、热重-差热（TG-DTA）对TiO2/AC进行表征。以紫外灯为光源,偶氮类染料亚甲基蓝为标准降解物,考察TiO2/AC复合体的光催化...
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| 关 键 词： | 活性炭 二氧化钛 超临界 光催化活性 亚甲基蓝 |
Photocatalytic Activity of Activated Carbon-supported TiO2 Composites Prepared by Supercritical Fluid Deposition |
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| CHEN Wei,LIU Jian-ben,LI You-ji,LI Lei-yong,ZENG Meng-xiong.Photocatalytic Activity of Activated Carbon-supported TiO2 Composites Prepared by Supercritical Fluid Deposition[J].Journal of Materials Science and Engineering,2011(6):943-948. |
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| Authors: | CHEN Wei LIU Jian-ben LI You-ji LI Lei-yong ZENG Meng-xiong |
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| Affiliation: | (College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China) |
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| Abstract: | TiO2/AC composites were prepared by supercritical fluid deposition(SCFD),with butyl titanate and activated carbon(AC) as precursor and support,respectively.The TiO2/AC was characterized by X-ray diffractometry(XRD) scanning electron microscopy(SEM),BET specific surface area measurements,thermogravimetry-differential thermal analysis(TG-DTA).The photocatalytic activity of TiO2/AC was investigated by the degradation of methylene blue(MB) under UV light.The results show that photoactivity of TiO2/AC is higher than that of P25 and the mixture of TiO2 and AC for MB degradation.It is attributed to the synergy effect of TiO2 and AC,the particle size of dispersed nano-TiO2 on AC is smaller than that of P25.TiO2/AC prepared at 600℃ shows the highest photocatalytic activity due to the effect of heat-treatment temperature on phase transformation and crystal growth. |
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| Keywords: | activated carbon titania supercritical photocatalytic activity methylene blue |
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