Preparation of photocatalytic TiO2 transparent thin film by thermal decomposition of Ti-alkoxide with α-terpineol as a solvent
Preparation of photocatalytic TiO2 transparent thin film by thermal decomposition of Ti-alkoxide with α-terpineol as a solvent
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DOI：
10.1016/s0040-6090(01)01036-7
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发表时间：
2001-07-30
期刊：
影响因子：
2.1
通讯作者：
Takeuchi, K
中科院分区：
文献类型：
--
作者：
Negishi, N;Takeuchi, K
以α-松油醇为高粘度溶剂，采用热分解法制备了TiO 2薄膜光催化剂。将聚乙二醇600和乙氧基乙醇两种配体作为钛醇盐的稳定剂加入到浸涂溶液中。在450 ℃下煅烧1 h后得到TiO 2薄膜。用单次浸渍获得的膜厚度与浸渍涂布溶液的粘度成比例。所获得的薄膜是透明的，厚度为1 μ m。薄膜的晶型为单斜晶系。薄膜由聚集的纳米TiO 2单晶（7-15 nm）形成，并且对于添加聚合物的体系，TiO 2晶体的尺寸变得更小。的TiO 2薄膜的光催化活性，作为评估的NO（1 ppm）在干燥空气中的光氧化，是我们以前的溶胶-凝胶法制备的TiO 2薄膜一样高。(C)2001 Elsevier Science B. V.保留所有权利。
TiO2 thin film photocatalysts coated onto glass plates were prepared by thermal decomposition of tetraisopropyl orthotitanate with a dip coating process using a-terpineol as a highly viscous solvent. Two types of ligands, polyethylene glycol 600 and (ethoxyethoxy)ethanol were added to the dip-coating solution as the stabilizer of titanium alkoxide. TiO2 thin films were obtained after calcination at 450 degreesC for 1 h. The film thickness obtained with a single dipping was proportional to the viscosity of the dip coating solutions. The thin films obtained were transparent with a thickness of 1 mum. The crystal form of the films was anatase alone. The thin films were formed with aggregated nano-sized TiO2 single crystals (7-15 nm), and the size of TiO2 crystals became smaller for the polymer-added systems. The photocatalytic activity of the TiO2 thin films, as evaluated by the photooxidation of NO (1 ppm) in dry air, was as high as our previous TiO2 thin films prepared by the sol-gel method. (C) 2001 Elsevier Science B.V. All rights reserved.