Preparation, characterisation and sensing application of inkjet-printed nanostructured TiO2 photoanode
Preparation, characterisation and sensing application of inkjet-printed nanostructured TiO2 photoanode
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DOI：
10.1016/j.snb.2010.03.048
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发表时间：
2010-06-03
影响因子：
8.4
通讯作者：
Zhao, Huijun
中科院分区：
文献类型：
--
作者：
Yang, Min;Li, Lihong;Zhao, Huijun
采用喷墨印刷技术制备了二氧化钛光阳极。使用材料表征方法（如扫描电子显微镜、X射线衍射和紫外-可见分光光度计）以及光电化学手段表征所得电极。初步结果表明，在印刷过程中，纳米TiO 2颗粒的纳米结构得到了很好的保持，并且通过简单的印刷工艺可以很好地控制TiO 2薄膜的厚度和均匀性。结合光电化学手段，喷墨印刷的TiO 2光电阳极能够氧化水溶液中的有机化合物，包括弱有机吸附物（例如，葡萄糖，苯酚）和强有机吸附物（例如，邻苯二甲酸氢钾（KHP）、谷氨酸、丙二酸）。该特性可用于测定水样中的化学需氧量（COD）。O-2的线性范围为0-120 mg/L，检出限为1 mg/L。印刷电极的光电化学活性被发现是高度可重复的。喷墨印刷技术可以作为一种通用的方法，用于大规模生产的TiO 2光阳极作为传感器。皇冠版权所有（C）2010由爱思唯尔B. V.出版保留所有权利。
Inkjet printing technique is proposed for the fabrication of titanium dioxide (TiO2) photoanodes with a synthetic colloidal TiO2 ink. The resultant electrodes were characterised using materials characterisation methods (such as scanning electron microscope, X-ray diffraction and UV-vis spectrophotometer) as well as photoelectrochemical means. The preliminary results indicate that the nanostructure of the original TiO2 particles is well maintained in the printing process, and the thickness and uniformity of the TiO2 thin film can be well controlled by the simple printing technique. Combined with photoelectrochemical means, the inkjet-printed TiO2 photoanode is capable of oxidising organic compounds in aqueous solution, including weak organic adsorbates (e.g., glucose, phenol) and strong organic adsorbates (e.g., potassium hydrogen phthalate (KHP), glutaric acid, malonic acid) indiscriminately in bulk cell. This characteristic is utilized to determine chemical oxygen demand (COD) in aqueous samples. A linear range of 0-120 mg/L of O-2 and a detection limit of 1 mg/L of O-2 were achieved. The photoelectrochemical activity of the printed electrodes was found to be highly reproducible. Inkjet-printing technique can be a versatile method for mass production of TiO2 photoanodes as sensors. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.