A new coral structure TiO2/Ti film electrode applied to photoelectrocatalytic degradation of Reactive Brilliant Red.
A new coral structure TiO2/Ti film electrode applied to photoelectrocatalytic degradation of Reactive Brilliant Red.
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DOI：
10.1016/j.jhazmat.2009.06.166
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发表时间：
2009-12
影响因子：
13.6
通讯作者：
X. Hua;Yijia Zhang;N. Ma;Xianfeng Li;Haowei Wang
中科院分区：
文献类型：
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作者：
X. Hua;Yijia Zhang;N. Ma;Xianfeng Li;Haowei Wang
采用阳极氧化法在钛基体上制备了一种新型结构的TiO 2/Ti薄膜，并将其用于降解模拟印染废水中的活性艳红（RBR）染料。利用场发射扫描电子显微镜（FE-SEM）、激光显微拉曼光谱仪（LMRS）、紫外可见分光光度计（UVS）和光电催化实验（PEC）对薄膜进行了表征。结果表明，薄膜的表面形貌为珊瑚状结构，薄膜的晶体结构为立方晶型。珊瑚结构TiO 2/Ti薄膜在紫外光区的吸收率为87-93%，在可见光区的吸收率为77-87%。光电转换实验表明，珊瑚结构TiO 2/Ti膜电极的光电流密度达到160μA/cm 2。反应器对色度和化学需氧量（COD）的去除率在1h内分别达到73%和60%。比纳米管TiO_2/Ti膜电极分别提高了16%和58%。这是由于不同表面形貌的电极具有不同的表面积和光吸收率。
A novel structure TiO2/Ti film was prepared on a titanium matrix using anodic oxidation technique and applied to degrade Reactive Brilliant Red (RBR) dye in simulative textile effluents. The film was characterized by Field-Emission Scanning Electron Microscope (FE-SEM), Laser Micro-Raman Spectrometer (LMRS), UV–vis spectrophotometer (UVS) and Photoelectrocatalytic (PEC) experiment. The results show that the surface morphology of the film is coral structure, and the crystal structure of the film is anatase. The absorbency of the coral structure TiO2/Ti film is 87–93% in the UV light region, and 77–87% in the visible light region. PEC experiment indicates that the photocurrent density of the coral structure TiO2/Ti film electrode achieves 160μA/cm2. The color and Chemical Oxygen Demand (COD) removal efficiencies of RBR achieve 73% and 60% in 1h, respectively. These are 16% and 58% higher than those of nanotube TiO2/Ti film electrode. These were attributed to that these electrodes with different surface morphologies exhibit distinct surface areas and light absorption rate.