Preparation and performance of photocatalytic TiO2 immobilized on palladium-doped carbon fibers
Preparation and performance of photocatalytic TiO2 immobilized on palladium-doped carbon fibers
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DOI：
10.1016/j.apsusc.2010.09.087
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发表时间：
2011
影响因子：
6.7
通讯作者：
Yaofeng Zhu;Yaqin Fu;Q. Ni
中科院分区：
文献类型：
--
作者：
Yaofeng Zhu;Yaqin Fu;Q. Ni
采用简单的氧化还原法制备了Pd改性碳纤维(CFs)，然后将其浸渍在二氧化钛(TiO2)溶胶-凝胶中，形成负载型TiO2光催化剂/Pd-CF光催化剂。分别用场发射扫描电子显微镜和原子吸收光谱表征了Pd修饰碳纤维的形貌和Pd沉积量。用X射线衍射仪研究了TiO2光催化剂的晶体结构。以酸性橙II为模型污染物，评价了该光催化剂在紫外光照射下的光催化性能。结果表明，TiO2/Pd-CF对酸性橙II具有较高的催化活性，当Pd的负载量为10.8 mg/g左右时，光催化性能和载体性能最佳。
Pd-modified carbon fibers (CFs) are obtained by a facile oxidation–reduction method and then dip-coated in a sol–gel of titanium dioxide (TiO2) to form supported TiO2/Pd-CF photocatalysts. The morphology of the Pd-modified CFs and the amount Pd deposited are characterized by field emission scanning electron microscopy and atomic absorption spectrometry, respectively. X-ray diffraction is used to investigate the crystal structures of the TiO2photocatalyst. Acid orange II is used as a model contaminant to evaluate the photocatalytic properties of the photocatalyst under UV irradiation. TiO2/Pd-CF exhibits higher catalytic activity than TiO2/CF towards the degradation of acid orange II. Optimum photocatalytic performance and support properties are achieved when the Pd particle loading is about 10.8mg/g.