Physical properties of nano-titania hollow fibers and their photocatalytic activity in the decomposition of phenol
Physical properties of nano-titania hollow fibers and their photocatalytic activity in the decomposition of phenol
复制标题
纳米二氧化钛中空纤维的物理性质及其光催化苯酚分解活性
DOI：
10.1134/s0036024413010263
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Wang, Shaofeng
中科院分区：
文献类型：
--
作者：
Yao, Shuhua;Zhang, Yaxing;Shi, Zhongliang;Wang, Shaofeng
以钛酸四丁酯（Ti（OC 4 H9）4）为前驱体，棉纤维为模板，成功制备了一系列具有中空纤维结构的纳米二氧化钛（TiO 2）光催化材料。采用扫描电子显微镜（SEM）、X射线衍射（XRD）和N2吸附-脱附测试对样品的形貌、晶体结构和表面结构进行了表征。以苯酚溶液为研究对象，考察了样品在紫外光照射下的光催化活性.研究了焙烧温度、光催化剂用量、苯酚初始浓度和光照时间对苯酚光降解的影响。结果表明，TiO 2纤维材料具有中空结构，具有较大的比表面积。在紫外光照射下，纤维结构材料对苯酚的光催化降解性能优于纯TiO 2，且在500°C下煅烧的样品对苯酚的光催化降解效率最高。此外，还证实了光催化剂循环使用的可能性，TiO 2纤维的光催化活性保持在约100%。新鲜样品经四次使用后，光催化活性仍保持在90%以上。此外，TiO 2纤维很容易从水中通过离心分离回收。
A series of nano-titania (TiO2) photocatalytic materials with a hollow fiber structure were successfully prepared using tetra-n-butyl titanate (Ti(OC4H9)4) as precursor and cotton fiber as the template. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and N2 adsorption-desorption measurements were employed to characterize the morphology, crystal structure, and surface structure of the samples. The photocatalytic activities of the samples were studied by phenol photodegradation in water under UV irradiation. The effect of calcination temperature, photocatalyst dosage, initial concentration of phenol and irradiation time on the photodegradation of phenol was studied. Results showed that the TiO2 fiber materials have hollow structures, indicating that these materials had a large specific surface area. The fiber structure material showed better photocatalytic properties for the degradation of phenol than pure TiO2 under UV light, and the sample calcined at 500°C exhibited the highest phenol photodegradation efficiency. In addition, the possibility of cyclic usage of the photocatalyst was also confirmed, the photocatalytic activity of TiO2 fiber remained ca. 90% of photocatalytic activity of the fresh sample after being used four times. Moreover, TiO2 fiber was easily recovered by centrifugal separation from water.
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影响因子：
--
作者：
Yanqing Zheng;Er-wei Shi;Zhizhan Chen;Wenjun Li;Xingfang Hu
通讯作者：
Yanqing Zheng;Er-wei Shi;Zhizhan Chen;Wenjun Li;Xingfang Hu
影响因子：
6.7
作者：
T. Tsumura;N. Kojitani;H. Umemura;M. Toyoda;M. Inagaki
通讯作者：
T. Tsumura;N. Kojitani;H. Umemura;M. Toyoda;M. Inagaki
影响因子：
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作者：
Weiqiang Huang;A. Duan;Zhen Zhao;G. Wan;Guiyuan Jiang;T. Dou;K. Chung;Jian Liu
通讯作者：
Weiqiang Huang;A. Duan;Zhen Zhao;G. Wan;Guiyuan Jiang;T. Dou;K. Chung;Jian Liu
DOI：
10.1016/j.colsurfa.2004.11.027
发表时间：
2005-03
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子：
--
作者：
Rusheng Yuan;Jingtang Zheng;Rongbo Guan;Yucui Zhao
通讯作者：
Rusheng Yuan;Jingtang Zheng;Rongbo Guan;Yucui Zhao
影响因子：
4.6
作者：
Shiying Zhang;Shiying Zhang;Zhenhua Chen;Yunlong Li;Qun Wang;L. Wan;Y. You
通讯作者：
Shiying Zhang;Shiying Zhang;Zhenhua Chen;Yunlong Li;Qun Wang;L. Wan;Y. You