Enhanced Visible-Light Photoelectrocatalytic Degradation of Organic Contaminants at Iodine-Doped Titanium Dioxide Film Electrode
Enhanced Visible-Light Photoelectrocatalytic Degradation of Organic Contaminants at Iodine-Doped Titanium Dioxide Film Electrode
复制标题
碘掺杂二氧化钛薄膜电极增强可见光光电催化降解有机污染物
DOI：
10.1021/ie202009a
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发表时间：
2012-01
期刊：
影响因子：
--
通讯作者：
Tao Xia
中科院分区：
文献类型：
--
作者：
Wang Dongting;Li Xin;Chen Jianfeng;Tao Xia
为了在光电催化（PEC）降解有机污染物中有效利用太阳光谱中的可见光，制备了具有扩展可见光响应和介孔纳米晶骨架的碘掺杂TiO2纳米晶（I-TNCs）薄膜电极，并通过扫描电子显微镜（SEM）、能量色散x射线能谱（EDX）和漫反射光谱（DRS）对其进行了表征。在可见光照射下，通过对水溶液中罗丹明B （RhB）和1-萘酚（1-NP）的降解来评价膜电极的PEC活性。在优化的I/Ti掺杂比为2.5 mol %时，基于I-TNCs的膜电极的PEC性能显著提高，对RhB的降解效率为92%，比未掺杂TNCs的膜电极快近2倍。与光催化（PC）工艺和电化学（EC）工艺相比，具有显著的协同效应。
For the sake of effectively utilizing visible light of the solar spectrum in photoelectrocatalytic (PEC) degradation of organic contaminants, iodine-doped TiO2 nanocrystallites (I-TNCs) film electrodes with extended response to visible light and mesoporous nanocrystalline framework were fabricated and subsequently characterized by scanning electronic microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and diffuse reflectance spectrum (DRS). The PEC activity of the film electrodes was evaluated by the degradation of rhodamine B (RhB) and 1-naphthol (1-NP) in aqueous solution at ambient conditions under visible irradiation. Under an optimized I/Ti doping ratio of 2.5 mol %, the PEC performance of the film electrode based on I-TNCs is significantly better, with the RhB degradation efficiency of 92%, which was nearly 2-fold faster than that of the film electrode based on undoped TNCs. In comparison with photocatalytic (PC) process and electrochemical (EC) process, a significant synergetic effect was...
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影响因子：
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